Patents by Inventor Howard Franklin Stewart

Howard Franklin Stewart 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).

  • Pest repellent compositions and articles and a method for preparing the same
    Publication number: 20020192258
    Abstract: What is disclosed is a method for the formation of unique poly(vinyl alcohol) hydrogels, articles that are made from such hydrogels, unique odor-providing pest repellent compositions and their uses to repel pests.
    Type: Application
    Filed: June 26, 2002
    Publication date: December 19, 2002
    Inventor: Howard Franklin Stewart
  • Pest repellent compositions and articles and a method for preparing the same
    Patent number: 6475504
    Abstract: What is disclosed is a method for the formation of unique poly(vinyl alcohol) hydrogels, articles that are made from such hydrogels, unique odor-providing pest repellent compositions and their uses to repel pests.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: November 5, 2002
    Inventor: Howard Franklin Stewart
  • Hydrogel soap
    Patent number: 6090763
    Abstract: What is disclosed herein are new and novel hydrogel soaps and a process for obtaining them which comprises providing surface active agents in a pre-hydrogel mixture, and then forming the hydrogel. The process affords solid soaps which do not change significantly in size during use, have wide varying mechanical properties including high strengths in spite of the very high water content of the soaps, and moreover, unexpectedly provide uniform release of the surfactants and/or detergents slowly over a long period of time.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: July 18, 2000
    Inventors: Howard Franklin Stewart, Daniel Graiver, Robert E. Kalinowski
  • Metal substrates with carboxyfunctional siloxane release coatings
    Patent number: 4011362
    Abstract: Metal substrates such as molds and fuser rolls are coated with carboxyfunctional siloxanes to improve their release characteristics.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: March 8, 1977
    Assignee: Dow Corning Corporation
    Inventor: Howard Franklin Stewart