Patents by Inventor David Fecher

David Fecher 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).

  • Process for preparing nanoparticles in the form of a powder comprising a bio-resorbable polyester
    Patent number: 11964058
    Abstract: A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size Dz in the range of 1 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 23, 2024
    Assignee: Evonik Corporation
    Inventors: David Fecher, Maria Camilla Operti, Rima Jaber, Andrea Engel, Silko Grimm, Min Yang
  • Process for preparing nanoparticles in the form of a powder comprising a bio-resorbable polyester
    Publication number: 20220354803
    Abstract: A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size D, in the range of 3 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.
    Type: Application
    Filed: September 25, 2020
    Publication date: November 10, 2022
    Applicant: EVONIK CORPORATION
    Inventors: David Fecher, Maria Camilla Operti, Rima Jaber, Andrea Engel, Silko Grimm, Min Yang