Patents by Inventor Shoji Mase

Shoji Mase 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 plastic lens comprising a primer layer, a hard coat layer and an antireflection coating
    Patent number: 5693366
    Abstract: A process for producing a plastic lens is disclosed, which comprises the steps of: providing a primer layer comprising a polyurethane on the surface of a plastic lens substrate; subsequently providing a hard coat layer comprising a silicone resin on the surface of the primer layer; and then providing a single-layer or multi-layer anti-reflection coating on the surface of the hard coat layer by depositing an inorganic material, wherein the polyurethane used for providing the primer layer is a thermosetting polyurethane.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: December 2, 1997
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shoji Mase, Noboru Otani, Motoaki Yoshida
  • Plastic lens
    Patent number: 5496641
    Abstract: A plastic lens formed by laminating, in the order as described below,(A) a plastic lens substrate having a refractive index in the range of 1.50 to 1.70,(B) a primer layer containing a metal compound of at least one metal selected from the group consisting of Al, Ti, Zr, Sn and Sb and a polyurethane, or(B') a primer layer formed from a polyurethane containing at least one element selected from the group consisting of Cl, Br, I and S,(C) a hard coating layer, and(D) a single-layered or multi-layered anti-reflection layer formed by vapor-depositing an inorganic substance.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: March 5, 1996
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shoji Mase, Noboru Otani, Motoaki Yoshida, Satoshi Ishizuka, Hisayuki Kayanoki, Naoto Hirayama
  • Process for producing plastic lens
    Patent number: 5310577
    Abstract: A process for producing a plastic lens, which comprises:(1) applying a primer coating composition composed mainly from a blocked polyisocyanate and a polyol onto a surface of a plastic lens substrate and heating the primer coating composition to form a primer layer of a thermoset polyurethane, the blocked polyisocyanate being a polyisocyanate blocked with a .beta.-diketone,(2) forming a hard coating layer on the primer layer, and(3) vapor-depositing an inorganic material or inorganic materials on the hard coating layer to form a single-layered or multi-layered anti-reflection coating.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: May 10, 1994
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Shoji Mase, Noboru Otani, Motoaki Yoshida