Patents by Inventor Devang T. Shah

Devang T. Shah 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).

  • Publication number: 20160144039
    Abstract: Disclosed herein are methods of enhancing the stability of a sustained pharmaceutical composition comprising an active agent and a polymer and methods of preparing such pharmaceutical compositions with enhanced stability.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 26, 2016
    Inventors: Devang T. Shah, John Barr
  • Publication number: 20140107226
    Abstract: Disclosed herein are methods of enhancing the stability of a sustained pharmaceutical composition comprising an active agent and a polymer and methods of preparing such pharmaceutical compositions with enhanced stability.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: A.P. PHARMA, INC.
    Inventors: Devang T. Shah, John Barr
  • Publication number: 20100152227
    Abstract: Disclosed herein are methods of enhancing the stability of a sustained pharmaceutical composition comprising an active agent and a polymer and methods of preparing such pharmaceutical compositions with enhanced stability.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Inventors: Devang T. Shah, John Barr
  • Patent number: 6248862
    Abstract: Hydroxyterminated PHA is produced by cultivating a PHA-producing microorganism in the presence of an aliphatic diol or an aliphatic polyol. High molecular weight hydroxy-terminated PHA is obtainable by the disclosed process, and is useful in the production of graft, block and random polymers and copolymers with other monomers, oligomers and polymers containing appropriate functionality and end group compatibility. The hydroxyterminated PHAs of the invention display improved thermal stability compared with PHAs not modified to contain increased end-group hydroxyl content. In addition, a branched PHA structure is provided by melt processing polyol terminated PHA.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: June 19, 2001
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Devang T. Shah, Minhtien Tran
  • Patent number: 6228623
    Abstract: Methods for the biosynthesis of polyhydroxyalkanoate homopolymers and copolymers are described. In a preferred embodiment, the polymers have a single mode molecular weight distribution, and more preferably have a distribution of between about 2 and about 4, and most preferably about 2.1 or 2.5.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: May 8, 2001
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Timothy A. Mitsky, Devang T. Shah
  • Patent number: 6204341
    Abstract: Hydroxyterminated PHA is produced by cultivating a PHA-producing microorganism in the presence of an aliphatic diol or an aliphatic polyol. High molecular weight hydroxy-terminated PHA is obtainable by the disclosed process, and is useful in the production of graft, block and random polymers and copolymers with other monomers, oligomers and polymers containing appropriate functionality and end group compatibility.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: March 20, 2001
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Devang T. Shah, Minhtien Tran
  • Patent number: 6156852
    Abstract: Hydroxyterminated PHA is produced by cultivating a PHA-producing microorganism in the presence of an aliphatic diol or an aliphatic polyol. High molecular weight hydroxy-terminated PHA is obtainable by the disclosed process, and is useful in the production of graft, block and random polymers and copolymers with other monomers, oligomers and polymers containing appropriate functionality and end group compatibility. The hydroxyterminated PHAs of the invention display improved thermal stability compared with PHAs not modified to contain increased end-group hydroxyl content. In addition, a branched PHA structure is provided by melt processing polyol terminated PHA.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: December 5, 2000
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Devang T. Shah, Minhtien Tran
  • Patent number: 6091002
    Abstract: Methods for the biosynthesis of polyhydroxyalkanoate homopolymers and copolymers are described. In a preferred embodiment, the polymers have a single mode molecular weight distribution, and more preferably have a distribution of between about 2 and about 4, and most preferably about 2.1 or 2.5.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: July 18, 2000
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Timothy A. Mitsky, Devang T. Shah
  • Patent number: 5994478
    Abstract: Hydroxyterminated PHA is produced by cultivating a PHA-producing microorganism in the presence of an aliphatic diol or an aliphatic polyol. High molecular weight hydroxy-terminated PHA is obtainable by the disclosed process, and is useful in the production of graft, block and random polymers and copolymers with other monomers, oligomers and polymers containing appropriate functionality and end group compatibility.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 30, 1999
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Devang T. Shah, Minhtien Tran
  • Patent number: 5378807
    Abstract: A method is disclosed for significantly diminishing the rate of degradation of naturally-produced .gamma.-PGA in a .gamma.-PGA-producing cell culture. Also, a method is disclosed for significantly decreasing the water solubility coefficient of naturally-produced .gamma.-PGA by forming derivatives of .gamma.-PGA. In addition, a polymer solution is disclosed which includes a polysaccharide component and a .gamma.-PGA component.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: January 3, 1995
    Assignee: University of Massachusetts at Lowell
    Inventors: Richard A. Gross, Stephen P. McCarthy, Devang T. Shah