Patents by Inventor Jonathan van Blerkom

Jonathan van Blerkom 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).

  • Encapsulation of sperm for artificial insemination
    Patent number: 4840891
    Abstract: Sperm are encapsulated in a nontoxic polymer which is freely flowing at body temperature and a gel or solid at temperatures of storage and transfer. On delivery to the reproductive tract, the polymer microcapsule liquifies and the sperm are released.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: June 20, 1989
    Assignee: Genetic Engineering, Inc.
    Inventor: Jonathan van Blerkom
  • Encapsulation of sperm for artificial insemination
    Patent number: RE34326
    Abstract: Sperm are encapsulated in a nontoxic polymer which is freely flowing at body temperature and a gel or solid at temperatures of storage and transfer. On delivery to the reproductive tract, the polymer microcapsule liquifies and the sperm are released.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: July 27, 1993
    Assignee: British Technology Group, USA, Inc.
    Inventor: Jonathan van Blerkom