Patents by Inventor Koichi Huruya

Koichi Huruya 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).

  • Alkali-resistant glass composition
    Patent number: 4066465
    Abstract: A glass composition particularly useful for producing alkali-resistant glass fibers, containing, by weight, from 53 to 63% SiO.sub.2, from 21 to 23% ZrO.sub.2 and from 10 to 21% Na.sub.2 O.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: January 3, 1978
    Assignee: Central Glass Company, Limited
    Inventors: Yoshio Mohri, Takashi Hiroishi, Kinzi Sano, Koichi Huruya, Tadashi Muramoto, Masato Tao