Patents by Inventor Janet Elizabeth Rickard
Janet Elizabeth Rickard 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).
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Patent number: 11951110Abstract: Described are methods of preparing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly useful for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: GrantFiled: February 2, 2022Date of Patent: April 9, 2024Assignee: WisTa Laboratories Ltd.Inventors: Claude Michel Wischik, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Patent number: 11344558Abstract: Described are methods of preparing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly useful for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: GrantFiled: October 30, 2015Date of Patent: May 31, 2022Assignee: WisTa Laboratories Ltd.Inventors: Claude Michel Wischik, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Publication number: 20220152038Abstract: Described are methods of prepraing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly usefull for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: ApplicationFiled: February 2, 2022Publication date: May 19, 2022Applicant: WisTa Laboratories Ltd.Inventors: Claude Michel Wischik, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Publication number: 20220098161Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: ApplicationFiled: October 12, 2021Publication date: March 31, 2022Applicant: WisTa Laboratories Ltd.Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Patent number: 11180464Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: GrantFiled: January 24, 2020Date of Patent: November 23, 2021Assignee: WisTa Laboratories Ltd.Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Patent number: 10864216Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: GrantFiled: March 5, 2018Date of Patent: December 15, 2020Assignee: WisTa Laboratories, Ltd.Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Publication number: 20200246350Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: ApplicationFiled: January 24, 2020Publication date: August 6, 2020Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Patent number: 10399955Abstract: Described are a compound of formula (II) or (III): The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.Type: GrantFiled: December 8, 2016Date of Patent: September 3, 2019Assignee: WISTA LABORATORIES LTD.Inventors: Scott Clunas, John Mervyn David Storey, Janet Elizabeth Rickard, David Horsley, Charles Robert Harrington, Claude Michel Wischik
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Publication number: 20190046537Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: ApplicationFiled: March 5, 2018Publication date: February 14, 2019Applicant: WisTa Laboratories Ltd.Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Patent number: 9907804Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: GrantFiled: February 29, 2016Date of Patent: March 6, 2018Assignee: WISTA LABORATORIES LTD.Inventors: Colin Marshall, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Publication number: 20170088534Abstract: Described are a compound of formula (II) or (III): The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.Type: ApplicationFiled: December 8, 2016Publication date: March 30, 2017Applicant: WisTa Laboratories Ltd.Inventors: Scott CLUNAS, John Mervyn Davd STOREY, Janet Elizabeth RICKARD, David HORSLEY, Charles Robert HARRINGTON, Claude Michel WISCHIK
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Patent number: 9549933Abstract: Described are a compound of formula (II) or (III): The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.Type: GrantFiled: February 14, 2014Date of Patent: January 24, 2017Assignee: WisTa Laboratories Ltd.Inventors: Scott Clunas, John Mervyn David Storey, Janet Elizabeth Rickard, David Horsley, Charles Robert Harrington, Claude Michel Wischik
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Publication number: 20160237048Abstract: Disclosed are compounds of general formula (I): and pharmaceutically acceptable salts thereof, formulations, methods and uses in, for example, the treatment of disease.Type: ApplicationFiled: February 29, 2016Publication date: August 18, 2016Applicant: WisTa Laboratories Ltd.Inventors: COLIN MARSHALL, Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Karrar Ahmad Khan, Christopher Paul Larch
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Patent number: 9283230Abstract: The invention relates to compounds of general formula (I): wherein: each of R1 and R9 is independently selected from: —H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H, C1-4alkyl, C2-4alkenyl, and halogenated C1-4alkyl; and wherein: each of RA and RB is independently selected from: C1-4alkyl, halogenated C1-4alkyl, and C6-10aryl; or RA and RB are linked to form a group selected from: C1-6 alkylene and C6-10 arylene; and pharmaceutically acceptable salts thereof, which are useful in the treatment of, for example, Alzheimer's disease. In other aspects the invention also relates to novel formulations of 3,7-diamino-10H-phenothiazinium salts.Type: GrantFiled: August 15, 2011Date of Patent: March 15, 2016Assignee: WisTa Laboratories Ltd.Inventors: Scott Clunas, John Mervyn David Storey, James Peter Sinclair, Thomas Craven Baddeley, Ahtsham Ishaq, Michael Simpson, Craig Williamson, Barry Alan Wood, Claude Michel Wischik, Charles Robert Harrington, Janet Elizabeth Rickard, David Horsley, Yin Sze Loh, Colin Marshall, Karrar Ahmad Khan
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Publication number: 20160051559Abstract: Described are methods of preparing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly useful for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: ApplicationFiled: October 30, 2015Publication date: February 25, 2016Applicant: WisTa Laboratories Ltd.Inventors: Claude Michel WISCHIK, Janet Elizabeth RICKARD, Charles Robert HARRINGTON, David HORSLEY, John Mervyn David STOREY, Colin MARSHALL, James Peter SINCLAIR, Thomas Craven BADDELEY
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Patent number: 9174954Abstract: Described are methods of preparing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly useful for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: GrantFiled: April 9, 2014Date of Patent: November 3, 2015Assignee: WISTA LABORATORIES LTD.Inventors: Claude Michel Wischik, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Publication number: 20140221359Abstract: Described are methods of prepraing reduced 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of formula: wherein: R1 and R9 are independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These methods are particularly useful for producing stable reduced forms, and with high purity. The stability and purity are especially relevant for pharmaceutical compositions for the treatment of disease. The compounds are useful for treatment of e.g. tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs.Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Wis Ta Laboratories Ltd.Inventors: Claude Michel WISCHIK, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Publication number: 20140161731Abstract: Described are a compound of formula (II) or (III): The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: WisTa Laboratories Ltd.Inventors: Scott Clunas, John Mervyn David Storey, Janet Elizabeth Rickard, David Horsley, Charles Robert Harrington, Claude Michel Wischik
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Patent number: 8710051Abstract: This invention pertains generally to the field of phenothiazine compounds, and more particularly to certain stably reduced phenothiazine compounds, specifically, certain 3,7-diamino-10H-phenothiazine (DAPTZ) compounds of the following formula: wherein: each of R1 and R9 is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These compounds are useful as drugs, for example, in the treatment of tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs (for example, methylthioninium chloride, MTC).Type: GrantFiled: January 21, 2011Date of Patent: April 29, 2014Assignee: Wis Ta Laboratories Ltd.Inventors: Claude Michel Wischik, Janet Elizabeth Rickard, Charles Robert Harrington, David Horsley, John Mervyn David Storey, Colin Marshall, James Peter Sinclair, Thomas Craven Baddeley
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Patent number: 8658665Abstract: This invention pertains generally to processes, uses, methods and materials utilizing particular xanthylium compounds, including compounds of formula (I) and (II), as further defined herein. These compounds are useful as drugs, for example, in the treatment of tauopathies, such as Alzheimer's disease.Type: GrantFiled: December 10, 2009Date of Patent: February 25, 2014Assignee: WisTa Laboratories Ltd.Inventors: Scott Clunas, John Mervyn David Storey, Janet Elizabeth Rickard, David Horsley, Charles Robert Harrington, Claude Michel Wischik