Patents by Inventor Tomoaki Ohya

Tomoaki Ohya 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).

  • Heat-resistant filter
    Patent number: 7208026
    Abstract: To provide a heat resistant filter of which the reduction of tensile strength and folding endurance is small even when used as a filter material for a filter used at high temperatures, failure of the filter material is difficult even when used at high temperatures, and which is capable of achieving a long life. The heat resistant filter contains: a heat resistant organic fiber base material, and a resin composition which contains an alkaline substance and which adheres to the heat resistant organic fiber base material.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: April 24, 2007
    Assignees: Dainippon Ink and Chemicals, Inc., Toray Industries, Inc.
    Inventors: Tomoaki Ohya, Makoto Nakahara
  • Heat-resistant filter
    Publication number: 20040194624
    Abstract: To provide a heat resistant filter of which the reduction of tensile strength and folding endurance is small even when used as a filter material for a filter used at high temperatures, failure of the filter material is difficult even when used at high temperatures, and which is capable of achieving a long life. The heat resistant filter contains: a heat resistant organic fiber base material, and a resin composition which contains an alkaline substance and which adheres to the heat resistant organic fiber base material.
    Type: Application
    Filed: February 6, 2004
    Publication date: October 7, 2004
    Inventors: Tomoaki Ohya, Makoto Nakahara