Patents by Inventor Donald R. Gibbs

Donald R. Gibbs 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).

  • Manifolds for use in water heat distribution systems
    Patent number: 6220520
    Abstract: A modular manifold includes master modules and possibly also slave modules which each provide a respective terminal unit with a relatively constant rate of water flow at a modulated supply water temperature.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: April 24, 2001
    Assignee: Tekmar Holdings Ltd.
    Inventor: Donald R. Gibbs