Patents by Inventor Kunihiko Kaita

Kunihiko Kaita 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).

  • Solid type pressure-sensitive adhesive composition and pressure-sensitive adhesive sheets using the same
    Patent number: 6881796
    Abstract: A solid type pressure-sensitive adhesive composition containing a rubbery polymer as the main polymer; and pressure-sensitive adhesive sheets which use the pressure-sensitive adhesive composition, are excellent in adhesive strength and holding power, retain the intact holding power even when allowed to stand at high temperatures or made to have a reduced adhesive layer thickness, and are free from the problem of adhesive protrusion or adhesive remaining. The pressure-sensitive adhesive sheets comprise a substrate and formed thereon a layer comprising a solid type pressure-sensitive adhesive composition obtained by a method comprising adding a tackifier to a rubbery polymer and treating the resultant mixture with an isocyanate crosslinking agent to crosslink the polymer.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 19, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Tomoo Yamaguchi, Yasunobu Ina, Isao Hirose, Kunihiko Kaita, Shuzo Fujiwara
  • Calender rollers and method for producing laminated sheet
    Publication number: 20010042452
    Abstract: A set of calender rollers is described, which comprises at least three rollers, for rolling a plastic material into a plastic material sheet and for laminating the plastic material sheet onto a base material sheet at a nip portion to be formed into a laminated plastic material sheet, wherein
    Type: Application
    Filed: April 16, 2001
    Publication date: November 22, 2001
    Inventors: Isao Hirose, Tomoo Yamaguchi, Yasunobu Ina, Shuzo Fujiwara, Kunihiko Kaita
  • Solid type pressure-sensitive adhesive composition and pressure-sensitive adhesive sheets using the same
    Publication number: 20010006723
    Abstract: A solid type pressure-sensitive adhesive composition containing a rubbery polymer as the main polymer; and pressure-sensitive adhesive sheets which use the pressure-sensitive adhesive composition, are excellent in adhesive strength and holding power, retain the intact holding power even when allowed to stand at high temperatures or made to have a reduced adhesive layer thickness, and are free from the problem of adhesive protrusion or adhesive remaining. The pressure-sensitive adhesive sheets comprise a substrate and formed thereon a layer comprising a solid type pressure-sensitive adhesive composition obtained by a method comprising adding a tackifier to a rubbery polymer and treating the resultant mixture with an isocyanate crosslinking agent to crosslink the polymer.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Inventors: Tomoo Yamaguchi, Yasunobu Ina, Isao Hirose, Kunihiko Kaita, Shuzo Fujiwara