Patents by Inventor Harshad P. Amin

Harshad P. Amin 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).

  • Bisaminophenyl-based curatives and amidine-based curatives and cure accelerators for perfluoroelastomeric compositions
    Patent number: 7521510
    Abstract: Novel monoamidine, monoamidoxime and bisamidine curatives, co-curatives and cure accelerators are provided for use with perfluoroelastomeric compositions as well as novel synthesis methods for making monoamidine- and monoamidoxime-based curatives, co-curatives and cure accelerators. Also provided are diphenyl-based curatives, co-curatives and cure accelerators having sufficiently high molecular weight such that the melting temperature of the curatives, co-curatives and cure accelerators is no greater than about 240° C., and more preferably no greater than about 230° C.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: April 21, 2009
    Assignee: Greene, Tweed of Delaware, Inc
    Inventors: Carl A. Aufdermarsh, Harshad P. Amin, Anestis Logothetis
  • Bisaminophenyl-based curatives and amidine-based curatives and cure accelerators for perfluoroelastomeric compositions
    Patent number: 7247749
    Abstract: Novel monoamidine, monoamidoxime and bisamidine curatives, co-curatives and cure accelerators are provided for use with perfluoroelastomeric compositions as well as novel synthesis methods for making monoamidine- and monoamidoxime-based curatives, co-curatives and cure accelerators. Also provided are diphenyl-based curatives, co-curatives and cure accelerators having sufficiently high molecular weight such that the melting temperature of the curatives, co-curatives and cure accelerators is no greater than about 240° C., and more preferably no greater than about 230° C.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 24, 2007
    Assignees: Greene, Tweed of Delaware, Inc., Federal State Unitary Enterprise S.V. Lebedev Institute of Synthetic Rubber
    Inventors: Carl A. Aufdermarsh, Harshad P. Amin, Anestis Logothetis, Victor Gubanov, Margarita Volkova, Lioudmila Karmanova, Alexandr Kollar, Polina Troichanskaia, Gennady Emelianov, Vsevolod Berenblit
  • Bisaminophenyl-based curatives and amidine-based curatives and cure accelerators for perfluoroelastomeric compositions
    Publication number: 20040214956
    Abstract: Novel monoamidine, monoamidoxime and bisamidine curatives, co-curatives and cure accelerators are provided for use with perfluoroelastomeric compositions as well as novel synthesis methods for making monoamidine- and monoamidoxime-based curatives, co-curatives and cure accelerators. Also provided are diphenyl-based curatives, co-curatives and cure accelerators having sufficiently high molecular weight such that the melting temperature of the curatives, co-curatives and cure accelerators is no greater than about 240° C., and more preferably no greater than about 230° C.
    Type: Application
    Filed: January 29, 2004
    Publication date: October 28, 2004
    Applicant: Greene, Tweed of Delaware, Inc.
    Inventors: Carl A. Aufdermarsh, Harshad P. Amin, Anestis Logothetis
  • Perfluoroelastomeric compositions and seals having improved chemical resistance and methods of making the same
    Patent number: 5461107
    Abstract: An elastomeric composition having improved resistance to chemical attack is provided, the elastomeric composition including a perfluoroelastomer and a non-fibrillating particulate fluorographite. Also, a process for improving the processibility and resistance to chemical attack of a perfluoroelastomer is provided, in which the perfluoroelastomer is mixed with a non-fibrillating fluorocarbon particulate polymer to form a elastomeric composition which is processed at a temperature less than the melting temperature of the non-fibrillating fluorocarbon particulate polymer to disperse the fluorocarbon polymer throughout the perfluoroelastomer while maintaining the fluorocarbon polymer in particulate form. A method of making a seal which is resistant to chemical attack for preventing the leakage of a fluid between a first member and a second member is also provided.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: October 24, 1995
    Assignee: Greene, Tweed & Co.
    Inventors: Harshad P. Amin, Carl A. Aufdermarsh
  • Perfluoroelastomeric compositions and seals having improved chemical resistance and methods of making the same
    Patent number: 5444116
    Abstract: An elastomeric composition having improved resistance to chemical attack is provided, the elastomeric composition including a perfluoroelastomer and a non-fibrillating particulate fluorographite. Also, a process for improving the processibility and resistance to chemical attack of a perfluoroelastomer is provided, in which the perfluoroelastomer is mixed with a non-fibrillating fluorocarbon particulate polymer to form a elastomeric composition which is processed at a temperature less than the melting temperature of the non-fibrillating fluorocarbon particulate polymer to disperse the fluorocarbon polymer throughout the perfluoroelastomer while maintaining the fluorocarbon polymer in particulate form.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: August 22, 1995
    Assignee: Greene, Tweed & Co.
    Inventors: Harshad P. Amin, Carl A. Aufdermarsh