Patents by Inventor Yasuhiko Kataoka

Yasuhiko Kataoka 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).

  • Solventless laminating adhesive and process for production of composite film
    Patent number: 8377508
    Abstract: A solventless laminating adhesive comprising a polyisocyanate component and a polyol component, both of which are free from polyol components exhibiting crystalline properties at ordinary temperatures. The adhesive exhibits an initial viscosity of 500 to 1000 mPa s three minutes after mixing of the polyisocyanate component with the polyol component and a viscosity increase of 100 to 350% based on the initial viscosity 20 minutes after the mixing. In a coater which is provided with a pair of opposed rolls and in which the rolls rotates in the directions contrary to each other at the opposition site, the adhesive is applied to a film passing between the rolls.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: February 19, 2013
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Takashi Uemura, Shigetoshi Sasano, Yasuhiko Kataoka
  • SOLVENTLESS LAMINATING ADHESIVE AND PROCESS FOR PRODUCTION OF COMPOSITE FILM
    Publication number: 20100119821
    Abstract: A solventless laminating adhesive comprising a polyisocyanate component and a polyol component, both of which are free from polyol components exhibiting crystalline properties at ordinary temperatures. The adhesive exhibits an initial viscosity of 500 to 1000 mPa s three minutes after mixing of the polyisocyanate component with the polyol component and a viscosity increase of 100 to 350% based on the initial viscosity 20 minutes after the mixing. In a coater which is provided with a pair of opposed rolls and in which the rolls rotates in the directions contrary to each other at the opposition site, the adhesive is applied to a film passing between the rolls.
    Type: Application
    Filed: May 12, 2008
    Publication date: May 13, 2010
    Inventors: Takashi Uemura, Shigetoshi Sasano, Yasuhiko Kataoka
  • Carrier for electrophotographic developer and developer containing the same
    Patent number: 6627369
    Abstract: A carrier for an electrophotographic developer which has a flowability index F1, represented by formula (1), of 63 to 75 sec/(50·cm3) and a flowability index F2, represented by formula (2), of 30 to 100 Oe·g/cm3: F1=AD×FR  (1) F2=AD×Hc  (2) wherein AD is an apparent density (g/cm3); FR is a flow rate (sec/50 g); and Hc is a coercive force (Oe).
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 30, 2003
    Assignee: Powdertech Co., Ltd.
    Inventors: Hiromichi Kobayashi, Tsuyoshi Itagoshi, Yasuhiko Kataoka, Yuji Sato
  • Carrier for electrophotographic developer and developer containing the same
    Publication number: 20020177061
    Abstract: A carrier for an electrophotographic developer which has a flowability index F1, represented by formula (1), of 63 to 75 sec/(50·cm3) and a flowability index F2, represented by formula (2), of 30 to 100 Oe·g/cm3:
    Type: Application
    Filed: January 30, 2002
    Publication date: November 28, 2002
    Applicant: POWDERTECH CO., LTD.
    Inventors: Hiromichi Kobayashi, Tsuyoshi Itagoshi, Yasuhiko Kataoka, Yuji Sato
  • Carrier for electrophotographic development and electrophotographic developer containing the same
    Patent number: 6071663
    Abstract: A carrier for an electrophotographic developer comprising a carrier core coated with a silicone resin containing a crosslinking agent having a phenyl group.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: June 6, 2000
    Assignee: Powdertech Co., Ltd.
    Inventors: Shinichi Matsuda, Yuji Sato, Hiromichi Kobayashi, Yasuhiko Kataoka, Tetsuya Uemura, Toshio Honjo