Patents by Inventor Mahendra K. Dosi

Mahendra K. Dosi 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 3,5-diaminobenzotrifluoride
    Patent number: 5336808
    Abstract: 3,5-Diaminobenzotrifluoride is prepared by reaction of 4-chloro-3,5-dinitrobenzotrifluoride with sodium formate in acetic acid, in the presence of sodium acetate and palladium on charcoal.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: August 9, 1994
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Mahendra K. Dosi, Henry C. Lin
  • Preparation of 3,5-diamino benzotrifluoride
    Patent number: 5144076
    Abstract: 3,5-Diaminobenzotrifluoride can be produced, in a single step, by reacting 4-chloro-3,5-dinitro benzotrifluoride in a suitable solvent, with hydrogen gas, in the presence of a catalyst comprising palladium on a suitable carrier, and in the presence of a suitable base.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: September 1, 1992
    Assignee: Occidental Chemical Corporation
    Inventors: Ramesh Krishnamurti, Lawrence B. Fertel, Henry C. Lin, Mahendra K. Dosi
  • Gas recirculation system for carbon dioxide lasers
    Patent number: 4316157
    Abstract: A method and apparatus is described for reducing the gas consumption rate by controlling the gas composition in a repetitively pulsed high pressure and/or high energy density TE CO.sub.2 laser. Detrimental gas species formed in the discharge are removed by chemical reaction in the gas phase and the reaction products are removed by a trap in a recirculator loop. In particular, the primary detrimental species is oxygen, the reducing gas added to remove this is hydrogen or deuterium and the resulting oxides of hydrogen or deuterium are removed by a molecular sieve.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: February 16, 1982
    Assignee: Canadian Patents & Development Ltd.
    Inventors: Mahendra K. Dosi, Douglas J. James, Anthony W. Pasternak