Patents by Inventor Motoyuki Hayakawa

Motoyuki Hayakawa 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).

  • Patent number: 8993649
    Abstract: Provided is a pressure-sensitive adhesive for polarizing plates which can adhere a polarizing plate on a liquid crystal cell with good adhesion durability and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which makes it possible remove the polarizing plate.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: March 31, 2015
    Assignee: Lintec Corporation
    Inventors: Koichi Nagamoto, Kentaro Kusama, Mikihiro Kashio, Kazuhiro Kon, Motoyuki Hayakawa
  • Patent number: 8568873
    Abstract: Provided are a pressure-sensitive adhesive for polarizing plates which can apply a polarizing plate on a liquid crystal cell with good adhesion and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which has a removability and a polarizing plate with the above pressure-sensitive adhesive and a production process for the same. The pressure-sensitive adhesive for polarizing plates is prepared by irradiating a pressure-sensitive adhesive material comprising (A) an acrylic base polymer comprising a monomer having a carboxyl group in a monomer composition ratio of 0.5 mass % or less and (B) an active energy beam-curable compound with an active energy beam and it has a storage elastic modulus (G?) of 0.3 MPa or more at 23° C.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: October 29, 2013
    Assignee: Lintec Corporation
    Inventors: Kentaro Kusama, Koichi Nagamoto, Mikihiro Kashio, Kazuhiro Kon, Motoyuki Hayakawa
  • Publication number: 20070166537
    Abstract: Provided is a pressure-sensitive adhesive for polarizing plates which can adhere a polarizing plate on a liquid crystal cell with good adhesion durability and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which makes it possible remove the polarizing plate.
    Type: Application
    Filed: December 18, 2006
    Publication date: July 19, 2007
    Applicant: LINTEC CORPORATION
    Inventors: Koichi Nagamoto, Kentaro Kusama, Mikihiro Kashio, Kazuhiro Kon, Motoyuki Hayakawa
  • Publication number: 20070148485
    Abstract: Provided are a pressure-sensitive adhesive for polarizing plates which can apply a polarizing plate on a liquid crystal cell with good adhesion and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which has a removability and a polarizing plate with the above pressure-sensitive adhesive and a production process for the same. The pressure-sensitive adhesive for polarizing plates is prepared by irradiating a pressure-sensitive adhesive material comprising (A) an acrylic base polymer comprising a monomer having a carboxyl group in a monomer composition ratio of 0.5 mass % or less and (B) an active energy beam-curable compound with an active energy beam, and it has a storage elastic modulus (G?) of 0.3 MPa or more at 23° C.
    Type: Application
    Filed: December 7, 2006
    Publication date: June 28, 2007
    Applicant: LINTEC CORPORATION
    Inventors: Kentaro Kusama, Koichi Nagamoto, Mikihiro Kashio, Kazuhiro Kon, Motoyuki Hayakawa