Patents by Inventor Shinjiro Sakurai

Shinjiro Sakurai 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).

  • Diazo copying element
    Patent number: 4416967
    Abstract: A one-component or binary type diazo copying element comprises a substrate, a pre-coat layer overlying the substrate, said pre-coat layer being consisted essentially of fine particle silica and a specific copolymer having a glass transition temperature in the range of -20.degree. C. to 50.degree. C., and a diazo photosensitive layer overlying the pre-coat layer.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: November 22, 1983
    Assignee: Ricoh Co., Ltd.
    Inventors: Tsutomu Matsuda, Takeo Hirabayashi, Takeshi Yanagihara, Shinjiro Sakurai