Patents by Inventor Shinichi Sakashita

Shinichi Sakashita 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 BRANCHED VINYL POLYMER HAVING FUNCTIONAL GROUP
    Publication number: 20100016509
    Abstract: An object of the present invention is to provide a novel method for producing a vinyl polymer (P) having a polar functional group (X) and having in its main chain a branched structure. The object can be achieved by the present invention providing a method for producing a vinyl polymer (P) having a polar functional group (X) and having in its main chain a branched structure, wherein while and/or after polymerization of a vinyl polymer (I) having a protecting group (Y) and having at its molecular terminal a group (A) containing carbon-carbon double bond, the protecting group (Y) is converted to the polar functional group (X).
    Type: Application
    Filed: August 16, 2007
    Publication date: January 21, 2010
    Applicant: Kaneka Coorporation
    Inventors: Nao Fujita, Shinichi Sakashita, Yoshiki Nakagawa
  • Method of producing water-insolubilized regenerated collagen fiber
    Patent number: 6242573
    Abstract: A regenerated collagen fiber is subjected to water-insolubilizing treatment with a monofunctional epoxy compound to produce a water-insolubilized regenerated collagen fiber which can substantially maintain the color and the high knot tenacity, inherent in the collagen. Where the monofunctional epoxy compound is an epihalohydrin, a regenerated collagen fiber can be treated with this epihalohydrin and a sulfur compound to produce a water-insolubilized regenerated collagen fiber which can be permanent-wave set. In addition, the water-insolubilized regenerated collagen fiber can be converted into a fiber which can be permanent-wave set, by introducing a disulfide linkage into carboxylic groups of the collagen, which remain unmodified by the insolubilizing treatment.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: June 5, 2001
    Assignee: Kaneka Corporation
    Inventors: Masaoki Goto, Shinichi Sakashita, Kunihiko Matsumura
  • Regenerated collagen fiber and method of manufacturing the same
    Patent number: 6160096
    Abstract: The present invention provides a regenerated collagen fiber exhibiting a draping, luster and feel close to those of a natural protein fiber such as a human hair and capable of application of a permanent wave treatment, and a method of manufacturing the regenerated collagen fiber. The amino group and/or carboxyl group of the regenerated collagen is chemically modified to introduce a mercapto group and/or a disulfide linkage to the regenerated collagen. When subjected to a permanent wave treatment, the regenerated collagen fiber retains the waved shape.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: December 12, 2000
    Assignee: Kaneka Corporation
    Inventors: Shinichi Sakashita, Mamoru Tsugawa, Masaoki Goto, Kunihiko Matsumura, Norio Hirokawa
  • Treatment of disease caused by infection of Helicobacter
    Patent number: 5981522
    Abstract: A method for treating a digestive organ disease caused by the infection of Helicobacter, comprising administering a rifamycin derivative expressed by the formula (I), or a physiologically acceptable salt thereof ##STR1##
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: November 9, 1999
    Assignee: Kaneka Corporation
    Inventors: Katsuji Yamashita, Takehiko Yamane, Shinichi Sakashita, Kazunori Hosoe, Kenji Fujii, Yasuhiro Saka