Patents by Inventor Toshiyuki Takayasu

Toshiyuki Takayasu 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).

  • Patch
    Patent number: 6211425
    Abstract: A transdermal patch containing a drug comprising formoterol and/or a salt, a solvent for the drug, a pressure-sensitive adhesive comprising an ethylene/vinyl acetate copolymer resin and at least one of a filler and a plasticizer. The patch is substantially water-free. The patch serves to promote percutaneous absorption of the formoterol and/or a salt thereof and allow the efficacy of the drug to stably persist for a long period of time. The patch is thus effective for diseases such as asthma, which can be cured or prevented by exciting &bgr;-receptors.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: April 3, 2001
    Assignee: Saitama Daiichi Seiyaku Kabushiki Kaisha
    Inventors: Toshiyuki Takayasu, Ikuhiro Kakubari, Norihiro Shinkai, Junji Kawakami, Noriko Nakajima, Akemi Uruno
  • 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