Patents by Inventor Sumihiro Moriyama

Sumihiro Moriyama 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).

  • Oil-and water repellent gas-permeable filter
    Patent number: 5462586
    Abstract: An oil- and water-repellent filter which contains a porous filter material that has its internal and external surfaces coated with a compound formed by combining a fluoropolymer having a fluorine-containing aliphatic cyclic structure in the main chain and a fluoropolymer containing polyfluoroalkyl groups. The coating imparts superior oil- and water-repellency without impairment to the flow of air or other gases through the filter.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: October 31, 1995
    Assignee: Japan Gore-Tex, Inc.
    Inventors: Norihide Sugiyama, Masaru Nakamura, Sumihiro Moriyama, Fumihiro Sasaki