Patents by Inventor Tsuneo Shimada

Tsuneo Shimada 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).

  • Patent number: 5952096
    Abstract: A spectacle lens formed from a resin composition which consists essentially of (1) 100 parts by weight of a polycarbonate resin; (2) 0.05 to 0.5 part by weight of an ultraviolet absorber (A) having a maximum absorption in a wavelenght of 300 to 345 nm when measured in a chloroform solution; and (3) 0.01 to 0.3 part by weight of an ultraviolet absorber (B) having a maximum absorption in a wavelenght of 346 to 400 nm when measured in a chloroform solution. The spectacle lens has excellent impact resistance and transparency and high absorbing power for ultraviolet light having a specific wavelength.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: September 14, 1999
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Hironori Yamashita, Tsuneo Shimada
  • Patent number: D438198
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: February 27, 2001
    Assignee: NEC Corporation
    Inventors: Takayuki Sakakieda, Kei Kataoka, Tsuneo Shimada
  • Patent number: D452241
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: December 18, 2001
    Assignee: NEC Corporation
    Inventors: Yasuhiro Kitajima, Sadaaki Miyamoto, Ou Matsumoto, Tsuneo Shimada
  • Patent number: D327263
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: June 23, 1992
    Assignee: NEC Corporation
    Inventors: Shigeo Ogawa, Tsuneo Shimada
  • Patent number: D327690
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: July 7, 1992
    Assignee: NEC Corporation
    Inventors: Shigeo Ogawa, Tsuneo Shimada
  • Patent number: D327691
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: July 7, 1992
    Assignee: NEC Corporation
    Inventors: Shigeo Ogawa, Tsuneo Shimada
  • Patent number: D353597
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: December 20, 1994
    Assignee: NEC Corporation
    Inventors: Yoshio Minowa, Yuhei Kosugi, Tsuneo Shimada
  • Patent number: D378534
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 18, 1997
    Assignee: NEC Corporation
    Inventors: Syuzo Kato, Tadashi Hibino, Inahiko Tanaka, Kyoko Daisyoji, Tsuneo Shimada