Patents by Inventor Harold R. Martin, Jr.

Harold R. Martin, Jr. 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).

  • Pressure gradient dosing system for fluid supply
    Patent number: 7297256
    Abstract: A pressure gradient dosing system is provided for a fluid supply system. A flow passage has first and second pressure zones having a pressure gradient therebetween. An additive reservoir in an additive delivery system responds to the pressure gradient to release additive to the flow passage.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: November 20, 2007
    Assignee: Fleet Guard, Inc.
    Inventors: Ted S. Loftis, David L. Brisk, Barry M. Verdegan, Harold R. Martin, Jr., Peter K. Herman, Ismail C. Bagci, Abby True-Dahl
  • Fuel filter including slow release additive
    Patent number: 6238554
    Abstract: This invention relates to a fuel filter for use with internal combustion engines. The fuel filter includes a fuel additive that can be released into fuel. The rate of release for the fuel can be controlled. In one form the fuel additive can be released a substantially constant rate to maintain a uniform level of fuel additive in the fuel. Use of the present invention provides a fuel filter having an extended life span that is longer than fuel filters typically used with combustion engines.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: May 29, 2001
    Assignee: Fleetguard, Inc.
    Inventors: Harold R. Martin, Jr., David M. Stehouwer