Patents by Inventor Damodharan Satagopan

Damodharan Satagopan 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 production of 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane)
    Patent number: 8378149
    Abstract: The present invention provides a continuous process for the production of 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane) which comprises feeding continuously optimum molar quantities of 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether (CF3CHClOCHF2, Isoflurane) and anhydrous hydrogen fluoride, in a reactor in the vapor phase over a fluorination catalyst system comprising a metal pentahalide absorbed on a supporting substrate at a temperature ranging from 100° C. to 180° C., and separating 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane) continuously from the reactor. The process of the present invention enables continuous removal of desflurane product thereby minimizing co-production of byproducts and resulting in high conversion efficiency and yield of desflurane.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 19, 2013
    Assignee: Piramal Enterprises Limited
    Inventors: Sivaramakrishnan Hariharan, Owen Chambers, Abhay Atmaram Upare, Damodharan Satagopan
  • PROCESS FOR PRODUCTION OF 1,2,2,2-TETRAFLUOROETHYL DIFLUOROMETHYL ETHER (DESFLURANE)
    Publication number: 20100185020
    Abstract: The present invention provides a continuous process for the production of 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane) which comprises feeding continuously optimum molar quantities of 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether (CF3CHClOCHF2, Isoflurane) and anhydrous hydrogen fluoride, in a reactor in the vapour phase over a fluorination catalyst system comprising a metal pentahalide absorbed on a supporting substrate at a temperature ranging from 100° C. to 180° C., and separating 1,2,2,2-tetrafluoroethyl difluoromethyl ether (desflurane) continuously from the reactor. The process of the present invention enables continuous removal of desflurane product thereby minimizing co-production of byproducts and resulting in high conversion efficiency and yield of desflurane.
    Type: Application
    Filed: July 11, 2008
    Publication date: July 22, 2010
    Applicant: Piramal Healthcare Limited
    Inventors: Sivaramakrishnan Hariharan, Owen Chambers, Abhay Atmaram Upare, Damodharan Satagopan