Patents by Inventor Masahiro Hirukawa

Masahiro Hirukawa 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: 7638199
    Abstract: The present invention relates to a glass substrate which is characterized in that it has a primer layer that is formed thereon and includes a hydrolysis product of a hydrolysable silicon compound having an alkylene group and a hydrolysis product of a hydrolysable zirconium compound or hydrolysable titanium compound, and that, in the primer layer, zirconium is in an amount by weight ratio of 0.0002 times to 0.0025 times that of silicon, or titanium is in an amount by weight ratio of 0.0005 times to 0.0045 times that of silicon. Furthermore, the present invention relates to an anti-fogging article having a resin film that exhibits water-absorptive property and/or hydrophilic property and is formed on the primer layer of the glass substrate.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: December 29, 2009
    Assignee: Central Glass Company, Limited
    Inventors: Toshihiro Hirano, Toru Hirotsu, Noboru Murata, Masahiro Hirukawa, Nobuyuki Itakura
  • Publication number: 20080160187
    Abstract: The present invention relates to a coating agent for forming an antifogging film on a substrate. This coating agent is formed of a solvent and a mixture containing: (A) an organic isocyanate; (B) a water-absorbing polyol; (C) an acryl polyol; and (D) a surface active agent having an active hydrogen group.
    Type: Application
    Filed: December 16, 2005
    Publication date: July 3, 2008
    Applicant: CENTRAL GLASS COMPANY, LIMITED
    Inventors: Noboru Murata, Masahiro Hirukawa, Toshihiro Hirano
  • Publication number: 20070099000
    Abstract: The present invention relates to a glass substrate which is characterized in that it has a primer layer that is formed thereon and includes a hydrolysis product of a hydrolysable silicon compound having an alkylene group and a hydrolysis product of a hydrolysable zirconium compound or hydrolysable titanium compound, and that, in the primer layer, zirconium is in an amount by weight ratio of 0.0002 times to 0.0025 times that of silicon, or titanium is in an amount by weight ratio of 0.0005 times to 0.0045 times that of silicon. Furthermore, the present invention relates to an anti-fogging article having a resin film that exhibits water-absorptive property and/or hydrophilic property and is formed on the primer layer of the glass substrate.
    Type: Application
    Filed: November 25, 2004
    Publication date: May 3, 2007
    Applicant: Central Glass Company Limited
    Inventors: Toshihiro Hirano, Toru Hirotsu, Noboru Murata, Masahiro Hirukawa, Nobuyuki Itakura
  • Publication number: 20060047064
    Abstract: The invention relates to a two-package coating agent for forming an antifogging film. This coating agent contains a first coating agent comprising an isocyanate containing an isocyanate group; and a second coating agent comprising (a) a polyol component comprising at least a water-absorbing polyol and a hydrophobic polyol and (b) a surfactant comprising a group that is reactive with the isocyanate group. It is possible to form an antifogging film by a method including the steps of mixing the first and second coating agents together to prepare a coating agent; applying the coating agent to the substrate to form a precursory film on the substrate; and hardening the precursory film under room temperature or heating into the antifogging film.
    Type: Application
    Filed: July 29, 2003
    Publication date: March 2, 2006
    Inventors: Noboru Murata, Masahiro Hirukawa, Hiroshi Honjo, Toshiro Matsuura, Seiji Yamazaki
  • Patent number: 5731060
    Abstract: A holographic laminate to be used in a vehicular windshield or windowpane and an architectural window glass in order to display a variety of images for the expressive and decorative purposes. The holographic laminate comprises a transparent plate on which a hologram is mounted. An ultraviolet ray absorbing film is disposed on a side of the hologram through which side sunlight enter the hologram. A layer of an adhesive is disposed to secure the hologram to the transparent plate layer. A barrier film is disposed between the hologram and the adhesive layer to protect the hologram from being chemically affected by the adhesive layer.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: March 24, 1998
    Assignee: Central Glass Company, Limited
    Inventors: Masahiro Hirukawa, Takashi Yamate
  • Patent number: 5013788
    Abstract: The invention provides a liquid coating composition for forming a transparent and hard coating film on a plastic member such as a polycarbonate or polymethyl methacrylate plate. The liquid composition comprises 100 parts by weight of an organotrialkoxysilane R.sup.1 Si(OR.sup.2).sub.3, where R.sup.1 is a C.sub.1 - or C.sub.2 -alkyl group and R.sup.2 is a C.sub.1 -, C.sub.2 - or C.sub.3 -alkyl group, 5-20 parts by weight of an organotrialkoxysilane R.sup.3 Si(OR.sup.2).sub.3, where R.sup.3 is an organic group containing epoxy group, 50-200 parts by weight of an aqueous colloidal silica sol in which the content of SiO.sub.2 is 10-40 wt %, and 0.5-3 parts by weight of a dicarboxylic acid (CF.sub.2).sub.n (COOH).sub.2, where n is an integer from 1 to 5, preferably hexafluoroglutaric acid. On a surface of a plastic member a coating film of this composition is partially cured at 70.degree.-150.degree. C. to turn into a fairly hard but still pliable film.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: May 7, 1991
    Assignee: Central Glass Company, Limited
    Inventors: Toshikazu Nagashima, Haruki Kuramashi, Yoshihiro Nishida, Masahiro Hirukawa