Patents by Inventor Michael Frank Powell

Michael Frank Powell 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).

  • Compositions for microencapsulation of antigens for use as vaccines
    Patent number: 6913767
    Abstract: Methods and compositions are provided for the encapsulation of antigens in PLGA microspheres for use as vaccines. Such microspheres can also contain adjuvants. Mixtures of microspheres are provided which release antigen at desired intervals to provide boosts with antigen.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: July 5, 2005
    Assignee: Genentech, Inc.
    Inventors: Jeffrey L. Cleland, Amy Lim, Michael Frank Powell
  • Method for drying microspheres
    Patent number: 6080429
    Abstract: A method for drying microspheres in a fluidized bed is provided, along with a composition comprising microspheres dried by that method.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: June 27, 2000
    Assignee: Genentech, Inc.
    Inventors: Jeffrey L. Cleland, Andrew J. S. Jones, Michael Frank Powell
  • Methods and compositions for microencapsulation of adjuvants
    Patent number: 5643605
    Abstract: Methods and compositions are provided for the encapsulation of adjuvants in PLGA microspheres for use as vaccines. Mixtures of microspheres are provided which release adjuvant at desired intervals to provide boosts with adjuvant.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 1, 1997
    Assignee: Genentech, Inc.
    Inventors: Jeffrey L. Cleland, Amy Lim, Michael Frank Powell