Patents by Inventor Yosio Kamekura

Yosio Kamekura 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).

  • Cemented lens and process for production thereof
    Patent number: 5162825
    Abstract: A cemented lens consists of a lens that is tinted and/or contains a UV absorber, and a second lens that is neither tinted nor contains any UV absorber. The cemented lens is formed by placing the two lens elements together with a UV-curable adhesive between them, and then directing UV radiation through the first lens to cure the adhesive.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: November 10, 1992
    Assignee: Asahi Kogaku Kogyo K.K.
    Inventors: Yosio Kamekura, Masanao Kawahara
  • Cemented lens and process for production thereof
    Patent number: RE36049
    Abstract: A cemented lens consists of a lens that is tinted and/or contains a UV absorber, and a second lens that is neither tinted nor contains any UV absorber. The cemented lens is formed by placing the two lens elements together with a UV-curable adhesive between them, and then directing UV radiation through the first lens to cure the adhesive.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: January 19, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Yosio Kamekura, Masanao Kawahara