Patents by Inventor Uma Joshi

Uma Joshi 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 S(&ohgr;-aminoalkylamino) alkyl aryl sulfide dihydrochlorides
    Patent number: 6320079
    Abstract: A process for preparing S-(&ohgr;-aminoalkylamino) alkyl aryl sulfide dihydrochlorides includes the steps of (a) reacting aryl mercaptan and (&ohgr;-aminoalkylamino) alkylbromide dihydrobromide to cause condensation thereof in the presence of an organic base in an organic solvent and provide a condensation product; (b) converting the condensation product to a dihydrochloride salt; and (c) precipitating the dihydrochloride salt. Preferably the precipitated dihydrochloride salt is recrystallized. These dihydrochlorides are new and effective antidotes for sulfur mustard toxicity.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: November 20, 2001
    Assignee: The Chief Controller, Research & Ministry of Defense, Goverment of India
    Inventors: Uma Joshi, Syed Kalbey Raza, Pravin Kumar, Rajagopalan Vijayaraghavan, Devendra Kumar Jaiswal