Patents by Inventor Keiko Nakata

Keiko Nakata 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).

  • Method of producing a solid dispersion of the sparingly water-soluble drug, nilvadipine
    Patent number: 5340591
    Abstract: A solid dispersion and a method of producing a solid dispersion of a sparingly water-soluble drug characterized by mixing the sparingly water-soluble drug and a water-soluble polymer at a temperature where neither the water-soluble drug nor water-soluble polymer is melted.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: August 23, 1994
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Minoru Nakano, Toshinobu Uemura, Shinichi Morizane, Kiyoshi Okuda, Keiko Nakata
  • Drug delivery device
    Patent number: 4846801
    Abstract: A drug delivery device includes a cylinder having a large diameter and a drug delivery member coaxially fitted to one end of the cylinder and in fluid communication therewith, the drug delivery member having a diameter substantially smaller than that of the cylinder. Drug delivery orifices are formed only at a side wall of the drug delivery member at an end thereof opposite the cylinder. A plunger fittable into an end of the cylinder opposite the drug delivery member has a disc portion and a central projection which fits into the drug delivery member. A cap covering the drug delivery member has an annular projection on the inside thereof for sealing the drug delivery member.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: July 11, 1989
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kiyoshi Okuda, Kiyonori Okada, Kazumi Ohtomo, Keiko Nakata
  • Combined bottle and cap
    Patent number: D313176
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: December 25, 1990
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Kiyoshi Okuda, Kiyonori Okada, Hisatomi Fukuoka, Kazumi Ohtomo, Keiko Nakata