Patents by Inventor Shuitsu Hiraoka

Shuitsu Hiraoka 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).

  • Film-forming coating solution and synthetic resin lens
    Patent number: 5789476
    Abstract: Disclosed is a film-forming coating solution comprising a matrix and a fine particulate compound oxide composed of oxides of titanium, silicon and zirconium and/or aluminum. This film-forming coating solution can form a colorless and transparent film of high refractive index which is excellent in dyeing property and adhesion to the substrate. Also disclosed is a synthetic resin lens of high refractive index having a film (hard coat film) formed from the film-forming coating solution on the surface. This synthetic resin lens is free from interference fringe and has a reduced thickness.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: August 4, 1998
    Assignees: Seiko Epson Corporation, Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Takeaki Iryo, Satoshi Kubota, Kazunori Miyashita, Katsuyoshi Takeshita, Hirokazu Tanaka, Shuitsu Hiraoka, Masafumi Hirai, Tatsuhisa Uchino