Patents by Inventor Takuo Osuka

Takuo Osuka 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).

  • PROCESS FOR PRODUCING CHEMICALLY STRENGTHENED GLASS
    Publication number: 20120247152
    Abstract: The present invention relates to a process for producing a chemically strengthened glass, which includes conducting a sampling inspection including a measurement of a refractive index distribution of a glass. According to the process of the invention, the surface compressive stress and the depth of the compressive stress layer of the chemically strengthened glass can be stably and accurately measured.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Seiki Ohara, Kazutaka Ono, Masayuki Ishimaru, Takuo Osuka
  • Near infrared screening filter glass
    Patent number: 5227343
    Abstract: A near infrared screening filter glass consisting essentially of from 35 to 60 wt. % of P.sub.2 O.sub.5, from 10 to 30 wt. % of Al.sub.2 O.sub.3, from 1.5 to 15 wt. % of SiO.sub.2, from 3 to 15 wt. % of B.sub.2 O.sub.3 and from 0.1 to 10 wt. % of CuO.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: July 13, 1993
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takuo Osuka, Takahiro Nakayama, Osamu Sakamoto