Patents by Inventor Michael J. D. Gamlen

Michael J. D. Gamlen 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).

  • Water-dispersible tablets
    Patent number: 5629016
    Abstract: A water-dispersible tablet comprises acyclovir and a dispersing agent. The dispersing agent is a swellable clay such as a smectite e.g., Veegum F or bentonite, and is present within the granules of the tablet to provide a tablet which is capable of dispersing in water within 3 minutes to provide a dispersion which will pass through a 710 .mu.m sieve. The tablet also includes a cellulostic excipient. The tablet can be optionally film-coated, in which case the dispersion time is less than 5 minutes.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: May 13, 1997
    Assignee: Glaxo Wellcome Inc.
    Inventors: Krystyna E. Fielden, Michael J. D. Gamlen
  • Pharmaceutical formulations containing acrivastine
    Patent number: 5370880
    Abstract: The invention relates to a controlled release pharmaceutical formulation for oral administration which comprises discrete units comprising acrivastine or a salt thereof coated with a mixture containing:a) a copolymer or polymer containing repeating monomer units selected from alkyl esters of acrylic and methacrylic acids andb) ethyl cellulose,and a process for preparing such formulations.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: December 6, 1994
    Assignee: Burroughs Wellcome Co.
    Inventors: Harry P. Jones, Robert J. Mackey, Michael J. D. Gamlen
  • Pharmaceutical formulations containing acrivastine
    Patent number: 4954350
    Abstract: The invention relates to a controlled release pharmaceutical formulation for oral administration which comprises discrete units comprising acrivastine or a salt thereof coated with a mixture containing:(a) a copolymer or polymer containing repeating monomer units selected from alkyl esters of acrylic and methacrylic acids and(b) ethyl cellulose,and a process for preparing such formulations.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: September 4, 1990
    Assignee: Burroughs Wellcome Co.
    Inventors: Harry P. Jones, Robert J. Mackey, Michael J. D. Gamlen
  • Controlled release formulations containing zidovudine
    Patent number: 4917900
    Abstract: The invention relates to pharmaceutical formulations comprising discrete units of zidovudine provided with a controlled release coating in which the said units are preferably in the form of spheroids.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: April 17, 1990
    Assignee: Burroughs Wellcome Co.
    Inventors: Harry P. Jones, Robert J. Mackey, Michael J. D. Gamlen