Patents by Inventor Leo W. Tyran

Leo W. Tyran 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).

  • Process of making flake silver powders with chemisorbed monolayer of dispersant
    Patent number: 4331714
    Abstract: Flake silver powders which have a chemisorbed monolayer of organic dispersing agent such as oleic acid on the surfaces and process for their preparation are provided. Such silver powders can be formulated into thick film pastes at above 85% solids levels at relatively low viscosities. Pastes so obtained, when printed and fired, result in films of excellent conductive efficiency.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: May 25, 1982
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Leo W. Tyran
  • Flake silver powders with chemisorbed monolayer of dispersant
    Patent number: 4273583
    Abstract: Flake silver powders which have a chemisorbed monolayer of organic dispersing agent such as oleic acid on the surfaces and process for their preparation are provided. Such silver powders can be formulated into thick film pastes at above 85% solids levels at relatively low viscosities. Pastes so obtained, when printed and fired, result in films of excellent conductive efficiency.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: June 16, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Leo W. Tyran