Patents by Inventor Yunik Chang

Yunik Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230047106
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Application
    Filed: October 19, 2022
    Publication date: February 16, 2023
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Patent number: 11478498
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: October 25, 2022
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Publication number: 20200276218
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Application
    Filed: April 20, 2020
    Publication date: September 3, 2020
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Patent number: 10624918
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 21, 2020
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Publication number: 20200054552
    Abstract: The invention relates to a medicament containing a compound of general formula (I), where R1=independently, a straight or branched, saturated, singly- or multiply-unsaturated, optionally substituted C11-C21 alkyl, alkylene or alkinyl group, preferably a C11-C15 alkyl, alkylene or alkinyl group, particularly a C11-C13 alkyl, alkylene or alkinyl group, most preferably a C13 alkyl group, R2=independently, a straight or branched C1-C8 alkyl, alkylene or alkinyl group, preferably a C1-C6 alkyl, alkylene or alkinyl group, in particular a C2-C4 alkyl, alkylene or alkinyl group, most preferably a C3 alkyl group, a —[CH2—(CH2)m—O]nH group with n=1 to 10, preferably n=1 to 5, to m=1 to 5, preferably m=1 to 3, a —CH2—[CH—(OH)]p [CH2—R3]-group, where R3=independently H or OH, p=1 to 7, preferably p=1 to 4, a pentose group or a hexose group, as therapeutically active agent, alone or in combination with one or several further pharmaceutical agents as a combination preparation for the treatment of viral skin diseases and/or
    Type: Application
    Filed: August 19, 2019
    Publication date: February 20, 2020
    Inventors: Yunik CHANG, Robert LATHROP, Erwin BOHM, Irene GANDER-MEISTERERNST, Regina GREGER, Johanna HOLLDACK, Ulrich MOEBIUS
  • Patent number: 10434059
    Abstract: The invention relates to a medicament containing a compound of general formula (I), where R1=independently, a straight or branched, saturated, singly- or multiply-unsaturated, optionally substituted C11-C21 alkyl, alkylene or alkinyl group, preferably a C11-C15 alkyl, alkylene or alkinyl group, particularly a C11-C13 alkyl, alkylene or alkinyl group, most preferably a C13 alkyl group, R2=independently, a straight or branched C1-C8 alkyl, alkylene or alkinyl group, preferably a C1-C6 alkyl, alkylene or alkinyl group, in particular a C2-C4 alkyl, alkylene or alkinyl group, most preferably a C3 alkyl group, a —[CH2—(CH2)m-O]nH group with n=1 to 10, preferably n=1 to 5, to m=1 to 5, preferably m=1 to 3, a —CH2—[CH—(OH)]p[CH2—R3]— group, where R3=independently H or OH, p=1 to 7, preferably p=1 to 4, a pentose group or a hexose group, as therapeutically active agent, alone or in combination with one or several further pharmaceutical agents as a combination preparation for the treatment of viral skin diseases and/or
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: October 8, 2019
    Assignee: Fougera Pharmaceuticals Inc.
    Inventors: Yunik Chang, Robert Lathrop, Erwin Böhm, Irene Gander-Meisterernst, Regina Greger, Johanna Holldack, Ulrich Moebius
  • Publication number: 20190125776
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Application
    Filed: October 26, 2018
    Publication date: May 2, 2019
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Patent number: 10220049
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: March 5, 2019
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Yunik Chang, Gordon J. Dow
  • Patent number: 10166235
    Abstract: The solubility of kinetin and/or of zeatin is increased when either or both are combined in a formulation that includes a polyoxyalkylene-n-glycerol dicarboxylate component and a fatty acid component. These two components provide a synergistic increase in the solubility of kinetin and/or zeatin that is greater than that which would be expected based on the solubility of kinetin and zeatin in the individual components.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 1, 2019
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Pramod P. Sarpotdar, Sarmistha Basu, Varsha D. Bhatt, Yunik Chang, Gordon J. Dow
  • Patent number: 10137142
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 27, 2018
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Publication number: 20180311246
    Abstract: The solubility of kinetin and/or of zeatin is increased when either or both are combined in a formulation that includes a polyoxyalkylene-n-glycerol dicarboxylate component and a fatty acid component. These two components provide a synergistic increase in the solubility of kinetin and/or zeatin that is greater than that which would be expected based on the solubility of kinetin and zeatin in the individual components.
    Type: Application
    Filed: March 26, 2018
    Publication date: November 1, 2018
    Inventors: Pramod P. Sarpotdar, Sarmistha Basu, Varsha D. Bhatt, Yunik Chang, Gordon J. Dow
  • Publication number: 20180193254
    Abstract: The invention relates to a medicament containing a compound of general formula (I), where R1=independently, a straight or branched, saturated, singly- or multiply-unsaturated, optionally substituted C11-C21 alkyl, alkylene or alkinyl group, preferably a C11-C15 alkyl, alkylene or alkinyl group, particularly a C11-C13 alkyl, alkylene or alkinyl group, most preferably a C13 alkyl group, R2=independently, a straight or branched C1-C8 alkyl, alkylene or alkinyl group, preferably a C1-C6 alkyl, alkylene or alkinyl group, in particular a C2-C4 alkyl, alkylene or alkinyl group, most preferably a C3 alkyl group, a —[CH2—(CH2)m-O]nH group with n=1 to 10, preferably n=1 to 5, to m=1 to 5, preferably m=1 to 3, a —CH2—[CH—(OH)]p [CH2—R3]— group, where R3=independently H or OH, p=1 to 7, preferably p=1 to 4, a pentose group or a hexose group, as therapeutically active agent, alone or in combination with one or several further pharmaceutical agents as a combination preparation for the treatment of viral skin diseases and/o
    Type: Application
    Filed: August 18, 2017
    Publication date: July 12, 2018
    Applicant: Fougera Pharmaceuticals Inc.
    Inventors: Yunik CHANG, Robert LATHROP, Erwin BÖHM, Irene GANDER-MEISTERERNST, Regina GREGER, Johanna HOLLDACK, Ulrich MOEBIUS
  • Patent number: 9925194
    Abstract: The solubility of kinetin and/or of zeatin is increased when either or both are combined in a formulation that includes a polyoxyalkylene-n-glycerol dicarboxylate component and a fatty acid component. These two components provide a synergistic increase in the solubility of kinetin and/or zeatin that is greater than that which would be expected based on the solubility of kinetin and zeatin in the individual components.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: March 27, 2018
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Pramod P. Sarpotdar, Sarmistha Basu, Varsha D. Bhatt, Yunik Chang, Gordon J. Dow
  • Patent number: 9770406
    Abstract: The invention relates to a medicament containing a compound of general formula (I), where R1=independently, a straight or branched, saturated, singly- or multiply-unsaturated, optionally substituted C11-C21 alkyl, alkylene or alkinyl group, preferably a C11-C15 alkyl, alkylene or alkinyl group, particularly a C11-C13 alkyl, alkylene or alkinyl group, most preferably a C13 alkyl group, R2=independently, a straight or branched C1-C8 alkyl, alkylene or alkinyl group, preferably a C1-C6 alkyl, alkylene or alkinyl group, in particular a C2-C4 alkyl, alkylene or alkinyl group, most preferably a C3 alkyl group, a —[CH2—(CH2)m-O]nH group with n=1 to 10, preferably n=1 to 5, to m=1 to 5, preferably m=1 to 3, a —CH2—[CH—(OH)]p[CH2—R3]- group, where R3=independently H or OH, p=1 to 7, preferably p=1 to 4, a pentose group or a hexose group, as therapeutically active agent, alone or in combination with one or several further pharmaceutical agents as a combination preparation for the treatment of viral skin diseases and/or
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: September 26, 2017
    Assignee: Medigene AG
    Inventors: Yunik Chang, Robert Lathrop, Erwin Böhm, Irene Gander-Meisterernst, Regina Greger, Johanna Holldack, Ulrich Moebius
  • Publication number: 20170216336
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 3, 2017
    Inventors: Yunik Chang, Gordon J. Dow
  • Publication number: 20170209453
    Abstract: The solubility of kinetin and/or of zeatin is increased when either or both are combined in a formulation that includes a polyoxyalkylene-n-glycerol dicarboxylate component and a fatty acid component. These two components provide a synergistic increase in the solubility of kinetin and/or zeatin that is greater than that which would be expected based on the solubility of kinetin and zeatin in the individual components.
    Type: Application
    Filed: April 10, 2017
    Publication date: July 27, 2017
    Inventors: Pramod P. Sarpotdar, Sarmistha Basu, Varsha D. Bhatt, Yunik Chang, Gordon J. Dow
  • Patent number: 9693988
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following, application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 4, 2017
    Assignee: DOW PHARMACEUTICAL SCIENCES, INC.
    Inventors: Yunik Chang, Gordon J. Dow
  • Publication number: 20170165220
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Application
    Filed: October 24, 2016
    Publication date: June 15, 2017
    Inventors: Yunik Chang, Gordon J. Dow, Radhakrishnan Pillai
  • Patent number: 9616132
    Abstract: The solubility of kinetin and/or of zeatin is increased when either or both are combined in a formulation that includes a polyoxyalkylene-n-glycerol dicarboxylate component and a fatty acid component. These two components provide a synergistic increase in the solubility of kinetin and/or zeatin that is greater than that which would be expected based on the solubility of kinetin and zeatin in the individual components.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: April 11, 2017
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Pramod Sarpotdar, Sarmistha Basu, Varsha D. Bhatt, Yunik Chang, Gordon J. Dow
  • Patent number: 9561208
    Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: February 7, 2017
    Assignee: Dow Pharmaceutical Sciences, Inc.
    Inventors: Yunik Chang, Gordon J. Dow