Patents by Inventor Shozo Muranishi

Shozo Muranishi 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).

  • Polylactic acid microspheres and process for producing the same
    Patent number: 4994281
    Abstract: Polylactic acid microspheres having an average particle diameter of about 0.1 to 10 .mu.m which are produced from solution containing a physiologically active substance by the solvent-evaporation drying process. The microspheres are produced by emulsifying the solution in a non-solvent by the aid of ultrasonic wave. The microspheres produce a sustained release effect of the physiologically active substance.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: February 19, 1991
    Assignees: Sanraku Incorporated, Biomaterials Universe Incorporated
    Inventors: Shozo Muranishi, Yoshito Ikada, Hiroshi Yoshikawa, Shokyu Gen
  • Compositions for rectal use
    Patent number: 4156719
    Abstract: A micellar solution composition for rectal use comprising (a) a water-soluble drug which is poorly absorbable on oral administration (b) a middle-higher fatty acid and/or the mono- or di-glyceride thereof, (c) a bile acid and/or a nonionic surface active agent, and (d) water; and a powder composition for rectal use prepared by drying the aforesaid micellar solution composition.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: May 29, 1979
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Hitoshi Sezaki, Shozo Muranishi
  • Powdered emulsion product and method of production
    Patent number: 4011661
    Abstract: Powdered products containing a drug or nutrient suitable for administering in emulsion form are prepared by dispersing (a) an oil; (b) a solution of a drug or nutriment in oil; or (c) an emulsion of an aqueous solution of a drug or nutriment in oil, in an aqueous solution containing a surface layer former, and, where appropriate, a drug or nutriment, and then spray-drying the dispersion.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: March 15, 1977
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Sezaki, Shozo Muranishi