Patents by Inventor Shigenori Ohtsuka

Shigenori Ohtsuka 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).

  • Antiphlogistic-analgesic plaster comprising triacetin and piroxicam
    Patent number: 5496819
    Abstract: An antiphlogistic-analgesic plaster comprising piroxicam and triacetin and/or triethyl citrate.The antiphlogistic-analgesic plaster of the invention is excellent in percutaneous absorption of piroxicam and hence has an excellent antiphlogistic and analgesic effect.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: March 5, 1996
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Hirohisa Okuyama, Yasuo Ikeda, Shigenori Ohtsuka, Shuichi Kasai, Akira Iwasa
  • Photosensitive member for electrophotography
    Patent number: 4956256
    Abstract: A photosensitive member for electrophotography comprising a photosensitive layer on a conductive substrate, said photosensitive layer containing as a binder resin a modified polycarbonate resin having the repeating structural units represented by the following general formula (1) and (2); ##STR1## wherein R.sup.1 and R.sup.2 are selected from a hydrogen atom, an alkyl group having 1-3 carbon atoms and a halogen atom, at least one of R.sup.1 and R.sup.2 being the alkyl or the halogen atom, and ##STR2## the ratio of the repeating structural unit of the general formula (1) to that of the general formula (2) being at least 20:80. This photosensitive member is highly resistant to mechanical wear and the deterioration of sensitivity and chargeability.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: September 11, 1990
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Shigenori Ohtsuka, Hiroshi Urabe, Masahiro Nukui, Mamoru Nozomi, Setsuko Sasakawa