Patents by Inventor Shigehiro Nagahara

Shigehiro Nagahara 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).

  • Sealing composition
    Patent number: 4115132
    Abstract: A sealing composition which can be suitably used for sealing a panel and a funnel of a color television tube is disclosed. The composition consists essentially of 60 - 99 wt.% of low melting devitrifiable glass powder, 1 - 35 wt.% of lead titanate powder and 0 - 5 wt.% of zircon powder. The glass powder has a composition of 77 - 83 wt.% of PbO, 7 - 10 wt.% of B.sub.2 O.sub.3, 7 - 12 wt.% of ZnO and 1 - 3 wt.% of SiO.sub.2.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: September 19, 1978
    Assignee: Asahi Glass Company Ltd.
    Inventors: Yoshiro Suzuki, Yoshinori Kokubu, Jiro Chiba, Morihisa Hara, Shigehiro Nagahara, Koichi Yamamoto
  • Liquid crystal cells
    Patent number: 3995941
    Abstract: Here is disclosed a liquid crystal cell comprising a juxtaposed couple of planar elements at least one of which is transparent and a liquid crystal material interposed between said planar elements and sealed around the edges thereof, said cell being thermally and chemically stable, hermetically sealed and uniformly spaced, due to the use of low-melting glass as a sealant or a sealant-spacer.
    Type: Grant
    Filed: November 1, 1972
    Date of Patent: December 7, 1976
    Assignee: Asahi Glass Co., Ltd.
    Inventors: Shigehiro Nagahara, Nobuyoshi Ichimura, Yoshiro Suzuki