Patents by Inventor Tsunemitsu Kitagawa

Tsunemitsu Kitagawa 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).

  • Down-proof woven fabric
    Patent number: 9920460
    Abstract: A down-proof woven fabric includes a cloth composed of synthetic fibers with a yarn fineness of 33 decitex or less and having a weight per unit area of 50 g/m2 or less and a cover factor of 1,400 to 1,800, wherein the cloth is coated at least on one surface thereof with a resin by an amount of 0.1 g/m2 to 5 g/m2 as a solid component.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: March 20, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Tsunemitsu Kitagawa, Shintaro Kazahaya, Hiroyasu Kitajima
  • Liquid separation device, flow channel material and process for producing the same
    Patent number: 8388848
    Abstract: A liquid separation device is provided, and is capable of suppressing the lowering of filtration function due to an increase in flow channel resistance of permeated liquid which results in a separation membrane falling in a groove of a permeated liquid flow channel material along with accompanied breakage of the separation membrane surface. A permeated liquid flow channel material is disposed on the back side of a separation membrane composed of a sheet-like material having a linear groove and a linear crest alternately arrayed on one surface or both surfaces, wherein a groove width of the linear groove in the sheet-like material is 10 to 200 ?m, and a ratio of the groove width of the linear groove to the pitch of the linear groove is 0.45 or more.
    Type: Grant
    Filed: March 31, 2007
    Date of Patent: March 5, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Yoshifumi Odaka, Toshimasa Katayama, Tsunemitsu Kitagawa
  • DOWN-PROOF WOVEN FABRIC
    Publication number: 20120183754
    Abstract: A down-proof woven fabric includes a cloth composed of synthetic fibers with a yarn fineness of 33 decitex or less and having a weight per unit area of 50 g/m2 or less and a cover factor of 1,400 to 1,800, wherein the cloth is coated at least on one surface thereof with a resin by an amount of 0.1 g/m2 to 5 g/m2 as a solid component.
    Type: Application
    Filed: June 17, 2010
    Publication date: July 19, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Tsunemitsu Kitagawa, Shintaro Kazahaya, Hiroyasu Kitajima
  • LIQUID SEPARATION DEVICE, FLOW CHANNEL MATERIAL AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20100006504
    Abstract: A liquid separation device is provided, and is capable of suppressing the lowering of filtration function due to an increase in flow channel resistance of permeated liquid which results in a separation membrane falling in a groove of a permeated liquid flow channel material along with accompanied breakage of the separation membrane surface. A permeated liquid flow channel material is disposed on the back side of a separation membrane composed of a sheet-like material having a linear groove and a linear crest alternately arrayed on one surface or both surfaces, wherein a groove width of the linear groove in the sheet-like material is 10 to 200 ?m, and a ratio of the groove width of the linear groove to the pitch of the linear groove is 0.45 or more.
    Type: Application
    Filed: March 23, 2007
    Publication date: January 14, 2010
    Applicant: TORAY Industries , Inc.
    Inventors: Yoshifumi Odaka, Toshimasa Katayama, Tsunemitsu Kitagawa