Patents by Inventor Anand Atul Bade

Anand Atul Bade 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 5,6 -dihydro -4H-4(S)-ethylamino-6(S)-methylthieno[2,3-b] thiopyran-2-sulfonamide- 7,7 -dioxide and its salt
    Patent number: 8198316
    Abstract: The present invention relates to resolution of (cis,trans)5,6-dihydro-4H-4-ethylamino-6-methylthieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide using dibenzoyl-L-tartaric acid monohydrate or di-p-toluoyl-L-tarrtaric acid monohydrate as a chiral resolving agent in presence of methanol to obtain hemitartarate salt, purifying it to obtain hemitartarate salt of 5,6-dihydro-4H-4(S)-ethylamino-6(S)methylthieno[2,3-b]thiopyran-2-sulfonamide-7,7-dioxide with de of >99%, Chemical purity >99.5% with cis isomer content of <0.1% and further converting into its pharmaceutically acceptable salts, preferably hydrochloride salt.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: June 12, 2012
    Assignee: FDC Ltd
    Inventors: Anand Mohan Chandavarkar, Rajaram Uday Bapat, Anand Atul Bade, Anand Pandurang Chavan
  • PROCESS FOR THE PREPARATION OF 5,6 -DIHYDRO -4H-4(S)-ETHYLAMINO-6(S)-METHYLTHIENO[2,3-b] THIOPYRAN-2-SULFONAMIDE- 7,7 -DIOXIDE AND ITS SALT
    Publication number: 20090264662
    Abstract: The present invention relates to resolution of (cis, trans) 5,6-dihydro-4H-4-ethylamino-6-methylthieno[2,3-b] thiopyran-2-sulfonamide-7,7-dioxide using dibenzoyl-L-tartaric acid monohydrate or di-p-toluoyl-L-tarrtaric acid monohydrate as a chiral resolving agent in presence of methanol to obtain hemitartarate salt, purifying it to obtain hemitartarate salt of 5,6-dihydro-4 H-4 (S)-ethyl amino-6(S) methylthieno [2,3-b] thiopyran-2-sulfonamide-7,7-dioxide with de of >99% , Chemical purity >99.5% with cis isomer content of <0.1% and further converting into its pharmaceutically acceptable salts, preferably hydrochloride salt.
    Type: Application
    Filed: July 6, 2005
    Publication date: October 22, 2009
    Applicant: FDC LTD
    Inventors: Anand Mohan Chandavarkar, Rajaram Uday Bapat, Anand Atul Bade, Anand Pandurang Chavan