Patents by Inventor Kenichi Takezawa

Kenichi Takezawa 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).

  • Method for producing carbon fiber woven fabric
    Patent number: 7857013
    Abstract: The present invention has an object of providing a method for producing a carbon fiber woven fabric in which the length of each warp yarn made of a carbon fiber strand is uniform, weft yarns are straightly arranged without waviness, and that is excellent in quality can be obtained with high productivity (production speed), and is characterized that a method for producing a carbon fiber woven fabric using an air jet loom in which heald in a shedding motion has an angle of repose in a range of 0 to 50° when weaving a uni-directional carbon fiber woven fabric woven with a carbon fiber strand having a fineness of 400 to 6,000 tex as the warp yarn and an auxiliary fiber having a fineness of ? or less of the carbon fiber strand as the weft yarn.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: December 28, 2010
    Assignee: Toray Industries, Inc.
    Inventors: Eisuke Wadahara, Ikuo Horibe, Shigeru Miyamoto, Kyoko Miyamoto, legal representative, Kenichi Takezawa, Kuniyoshi Kurihara, Kazuhiro Ohno
  • METHOD FOR PRODUCING CARBON FIBER WOVEN FABRIC
    Publication number: 20100032049
    Abstract: The present invention has an object of providing a method for producing a carbon fiber woven fabric in which the length of each warp yarn made of a carbon fiber strand is uniform, weft yarns are straightly arranged without waviness, and that is excellent in quality can be obtained with high productivity (production speed), and is characterized that a method for producing a carbon fiber woven fabric using an air jet loom in which heald in a shedding motion has an angle of repose in a range of 0 to 50° when weaving a uni-directional carbon fiber woven fabric woven with a carbon fiber strand having a fineness of 400 to 6,000 tex as the warp yarn and an auxiliary fiber having a fineness of ? or less of the carbon fiber strand as the weft yarn.
    Type: Application
    Filed: April 27, 2007
    Publication date: February 11, 2010
    Applicant: Toray Industries, Inc.
    Inventors: Eisuke Wadahara, Ikuo Horibe, Shigeru Miyamoto, Kenichi Takezawa, Kuniyoshi Kurihara, Kazuhiro Ohno