Patents by Inventor Eiichi Mafune

Eiichi Mafune 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).

  • Cyclic AMP derivative-containing ointment
    Patent number: 5599798
    Abstract: An ointment comprising an adenosine 3',5'-cyclic phosphate derivative, a base having water-absorbing and drying properties and, incorporated in the base, is one or more salts each having pH in an aqueous solution of from 3 to 7. The ointment maintains the active ingredient in a stable state over an extended period of time.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: February 4, 1997
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Norio Takasugi, Eiichi Mafune, Masayuki Takahashi
  • Butyrophenone transdermal compositions
    Patent number: 5478568
    Abstract: A butyrophenone transdermal composition which comprises the following components (a) to (f):(a) a water-soluble polymer which is constituted by a monomer containing, partly or wholly, aliphatic carboxylic acid having a polymerizable double bond or a salt of the carboxylic acid,(b) a cross linking agent,(c) a cross linking promoter,(d) water,(e) a butyrophenone drug, and(f) a solvent for the butyrophenone drug (e), as essential components. The pH of the composition is adjusted to fall in the range of 5.5 to 8.0.With the composition of the invention, the concentration of the active component butyrophenone in blood can be controlled. The composition is capable of exhibiting its primary action, antiemetic action, without causing rash in the skin and with less adverse side effects.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: December 26, 1995
    Assignees: Saitama Daiichi Pharmaceutical Co., Ltd., Daiichi Pharmaceutical Co., Ltd.
    Inventors: Toshiyuki Takayasu, Hideo Saitoh, Eiichi Mafune
  • Topical powder compositions containing a cyclic AMP derivative
    Patent number: 5424298
    Abstract: A topical powder composition containing a cyclic AMP derivative and a water-absorptive powdery material. The topical powder composition is useful for wet dermatoses. Release of drug can be controlled.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: June 13, 1995
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Norio Takasugi, Eiichi Mafune, Toshiyuki Takayasu
  • Topical powder compositions containing a cyclic AMP derivative
    Patent number: 5405838
    Abstract: A topical powder composition containing a cyclic AMP derivative and a water-absorptive powdery material. The topical powder composition is useful for wet dermatoses. Release of drug can be controlled.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: April 11, 1995
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Norio Takasugi, Eiichi Mafune, Toshiyuki Takayasu