Patents by Inventor Keisuke Hishikawa

Keisuke Hishikawa 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).

  • Production method of hemp fiber for spinning and hemp fiber for spinning
    Patent number: 10415155
    Abstract: A production method of hemp fiber for spinning, the method including: an immersion treatment process of immersing raw hemp fiber in a treatment liquid including an alkali, water, and at least one type of enzyme selected from the group consisting of cellulose-degrading enzymes and glycosidic bond hydrolyzing enzymes for an immersion time of from 30 minutes to 60 minutes under conditions of a temperature of from 60° C. to 100° C.; a water-washing process of washing the immersion treated hemp fiber with water; and a drying process of drying the water-washed hemp fiber.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: September 17, 2019
    Assignees: AVEX GROUP HOLDINGS INC., Shinichirou Yoshida
    Inventors: Shinichirou Yoshida, Keisuke Hishikawa
  • PRODUCTION METHOD OF HEMP FIBER FOR SPINNING AND HEMP FIBER FOR SPINNING
    Publication number: 20170226662
    Abstract: A production method of hemp fiber for spinning, the method including: an immersion treatment process of immersing raw hemp fiber in a treatment liquid including an alkali, water, and at least one type of enzyme selected from the group consisting of cellulose-degrading enzymes and glycosidic bond hydrolyzing enzymes for an immersion time of from 30 minutes to 60 minutes under conditions of a temperature of from 60° C. to 100° C.; a water-washing process of washing the immersion treated hemp fiber with water; and a drying process of drying the water-washed hemp fiber.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 10, 2017
    Inventors: Shinichirou Yoshida, Keisuke Hishikawa
  • PRODUCTION METHOD OF HEMP FIBER FOR SPINNING AND HEMP FIBER FOR SPINNING
    Publication number: 20170218539
    Abstract: A production method of hemp fiber for spinning, the method including an immersion treatment process of immersing raw hemp fiber in a treatment liquid including water and at least one type of enzyme selected from the group consisting of protease enzymes and starch hydrolyzing enzymes for an immersion time of from 30 minutes to 60 minutes under a condition of a temperature of from 60° C. to 100° C., a water-washing process of washing the immersion treated hemp fiber with water, and a drying process of drying the water-washed hemp fiber.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 3, 2017
    Applicants: AVEX GROUP HOLDINGS INC.
    Inventors: Shinichirou Yoshida, Keisuke Hishikawa