Patents by Inventor Avinash G. Thombre

Avinash G. Thombre 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).

  • Use of asymmetric membranes in delivery devices
    Patent number: 5612059
    Abstract: A device for controlled release of an active substance through one or more asymmetric membranes by diffusion and/or osmotic pumping.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: March 18, 1997
    Assignee: Pfizer Inc.
    Inventors: John R. Cardinal, Scott M. Herbig, Richard W. Korsmeyer, Jeelin Lo, Kelly L. Smith, Avinash G. Thombre
  • Dispensing device containing a hydrophobic medium
    Patent number: 5431921
    Abstract: A device for the controlled delivery of an insoluble or partially aqueous insoluble beneficial agent to an aqueous containing environment. The device comprises a shaped wall that surrounds and defines an internal reservoir. The wall is formed at least in part of a sintered polymer microporous membrane permeable to a beneficial agent-containing hydrophobic medium when the wall is present in the aqueous containing environment. The reservoir contains a mixture of a hydrophilic swellable composition and a beneficial agent-containing hydrophobic medium.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: July 11, 1995
    Assignee: Pfizer Inc
    Inventor: Avinash G. Thombre