Patents by Inventor Kanemasa Matsukuma

Kanemasa Matsukuma 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).

  • Organic glass with high refractive index
    Patent number: 5051488
    Abstract: Novel organic glass with a high refractive index comprising a copolymer of (a) a diallyl isophthalate monomer, (b) an allyl or methallyl benzoate monomer and (c) a diester of maleic acid and/or diester of fumaric acid monomer, which also shows excellent light resistance and excellent other physical properties such as excellent moldability, high impact resistance, high dimension stability, excellent mechanical processing properties, excellent dyeability and excellent hard coating property, and is useful as a material for optical or optoelectronic parts such as lenses, prisms, reflecting mirror and window materials.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: September 24, 1991
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiharu Fujio, Kanemasa Matsukuma
  • Organic glass for optical parts
    Patent number: 4879363
    Abstract: Novel organic glass comprising a copolymer of (a) a diallyl phthalate monomer, (b) an allyl benzoate monomer and (c) a glycol bis(allylcarbonate) monomer, which has a high refractive index and excellent other physical properties such as high impact resistance, high dimension stability, excellent mechanical processing properties, excellent dyeability, excellent hard coating property, and is useful as a material for optical parts such as lenses and prisms.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: November 7, 1989
    Assignee: Daiso Co., Ltd.
    Inventors: Yoshiharu Fujio, Kanemasa Matsukuma, Toshihiko Nishimoto