Patents by Inventor Sebastian Sonny

Sebastian Sonny 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 the preparation of nepafenac
    Patent number: 9630909
    Abstract: Described herein are processes for the preparation of nepafenac and related intermediates, particularly wherein 2-aminobenzophenone is treated with a 2-(alkylthio)acetamide in the presence of sulfuryl chloride to afford a 2-(2-amino-3-benzoyl-phenyl)-2-(alkylthio)acetamide, which upon reduction affords nepafenac. Described herein are also processes for the purification of nepafenac, particularly for the removal of structurally similar impurities.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: April 25, 2017
    Assignee: Mylan Laboratories Ltd
    Inventors: Sebastian Sonny, Rao Jagadeeshwar, Srinivas Rao Mannava, Suresh Reddy Sabbella
  • Process for the preparation of nepafenac
    Publication number: 20160214927
    Abstract: Described herein are processes for the preparation of nepafenac and related intermediates, particularly wherein 2-aminobenzophenone is treated with a 2-(alkylthio)acetamide in the presence of sulfuryl chloride to afford a 2-(2-amino-3-benzoyl-phenyl)-2-(alkylthio)acetamide, which upon reduction affords nepafenac. Described herein are also processes for the purification of nepafenac, particularly for the removal of structurally similar impurities.
    Type: Application
    Filed: June 26, 2014
    Publication date: July 28, 2016
    Inventors: Sebastian Sonny, Rao Jagadeeshwar, Srinivas Rao Mannava, Suresh Reddy Sabella