Patents by Inventor Robert Gene Laughlin

Robert Gene Laughlin 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).

  • Controlled release article
    Patent number: 4067961
    Abstract: Controlled release articles which regulate the concentration of a surfactant compound at a useful level in an environment external to said articles are provided. The articles are especially adapted for use in or on the bodies of animals, including humans, to provide controlled release of surfactants having biological activity, for example, non-hormonal contraceptives.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: January 10, 1978
    Assignee: The Procter & Gamble Company
    Inventor: Robert Gene Laughlin
  • Controlled release contraceptive article
    Patent number: 4031202
    Abstract: Controlled release articles which regulate the concentration of a surfactant compound at a useful level in an environment external to said articles are provided with a coating. The improved articles are especially useful in or on the bodies of animals, including humans, to provide immediate release of the coating and, thereafter, to provide controlled release of surfactants having biological activity, e.g., non-hormonal contraceptives.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: June 21, 1977
    Assignee: The Procter & Gamble Company
    Inventors: Robert Gene Laughlin, Thomas William Gougeon