Patents by Inventor Yasuhiko Fukasawa

Yasuhiko Fukasawa 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).

  • Sheet of microfiber assembly
    Patent number: 10815587
    Abstract: The present invention aims to provide a sheet of microfiber assembly having a high filtering performance suitable as an oil-mist filter. A sheet of microfiber assembly 2 comprises microfibers 1 each having a fiber diameter of 3,000 nm or less and is formed of a mixture of water-insoluble but alcohol-soluble acetalized polyvinyl alcohol resin and water-insoluble but alcohol-soluble fluorine resin.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: October 27, 2020
    Assignee: KOKEN, LTD.
    Inventors: Yasuhiko Fukasawa, Kazushi Kimura
  • SHEET OF MICROFIBER ASSEMBLY, AND METHOD AND APPARATUS FOR MAKING THE SAME
    Publication number: 20110159765
    Abstract: The present invention aims to provide a sheet of microfiber assembly having a high filtering performance suitable as an oil-mist filter. A sheet of microfiber assembly 2 comprises microfibers 1 each having a fiber diameter of 3,000 nm or less and is formed of a mixture of water-insoluble but alcohol-soluble acetalized polyvinyl alcohol resin and water-insoluble but alcohol-soluble fluorine resin.
    Type: Application
    Filed: November 11, 2009
    Publication date: June 30, 2011
    Applicant: KOKEN LTD
    Inventors: Yasuhiko Fukasawa, Kazushi Kimura