Patents by Inventor Katumasa Nakahara

Katumasa Nakahara 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).

  • Inorganic coating composition and hydrophilic coating film
    Publication number: 20070098906
    Abstract: A subject for the invention is to form a coating film which has high transparency and excellent adhesion to organic base materials and retains long-lasting excellent effects concerning hydrophilicity, antifogging properties, droplet repellency, and antifouling properties. The invention relates to an inorganic coating composition capable of forming a hydrophilic coating film on an organic base material, the organic coating composition comprising alumina particles having an aggregate diameter in a dispersion medium of 20-400 nm and either a silicic acid oligomer or a colloidal silica, a surfactant, a water-miscible organic solvent which is capable of swelling or dissolving the organic base material and has a boiling point of 120° C. or higher at an atmospheric pressure of 0.
    Type: Application
    Filed: October 10, 2006
    Publication date: May 3, 2007
    Applicant: ASAHI GLASS CO., LTD.
    Inventors: Takashige Yoneda, Hisao Inokuma, Youhei Kawai, Katumasa Nakahara, Akemi Katou
  • Hybrid package, glass ceramic substrate for the hybrid package, and composition for the glass ceramic substrate
    Patent number: 5304518
    Abstract: A hybrid package comprising a glass ceramic substrate and an aluminum nitride substrate bonded thereto, said glass ceramics substrate has a thermal expansion coefficient substantially the same as that of the aluminum nitride substrate.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: April 19, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Kazuo Sunahara, Naosi Irisawa, Katumasa Nakahara, Kazunari Watanabe, Mitsuo Takabatake
  • Hybrid package, glass ceramic substrate for the hybrid package, and composition for the glass ceramic substrate
    Patent number: 5057376
    Abstract: A hybrid package comprising a glass ceramic substrate and an aluminum nitride substrate bonded thereto, said glass ceramic substrate has a thermal expansion coefficient substantially the same as that of the aluminum nitride substrate.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: October 15, 1991
    Assignee: Asahi Glass Company Ltd.
    Inventors: Kazuo Sunahara, Naosi Irisawa, Katumasa Nakahara, Kazunari Watanabe, Mitsuo Takabatake