Patents by Inventor Akihiro Kawara

Akihiro Kawara 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).

  • 1,2-diphenylpyrrole derivatives, their preparation and their therapeutic uses
    Patent number: 5908858
    Abstract: Compounds of formula (I) and (II): ##STR1## ?wherein R is hydrogen, halogen or alkyl; R.sup.1 is alkyl, amino or substituted amino; R.sup.2 is optionally substituted phenyl; R.sup.3 is hydrogen, halogen or optionally substituted alkyl; R.sup.4 is hydrogen, optionally substituted alkyl, cycloalkyl, aryl, or aralkyl! have valuable analgesic, anti-inflammatory, anti-pyretic and anti-allergic activities and have the ability to inhibit the production of leukotrienes and to inhibit bone resorption. They are relatively free from the side effects which generally result from the administration of compounds having these kinds of activities.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: June 1, 1999
    Assignee: Sankyo Company, Limited
    Inventors: Tomio Kimura, Yasuo Noguchi, Akira Nakao, Keisuke Suzuki, Shigeru Ushiyama, Akihiro Kawara, Masaaki Miyamoto
  • 1,2-Diphenylpyrrole derivatives, their preparation and their therapeutic uses
    Patent number: RE39420
    Abstract: Compounds of formula (I) and (II): [wherein R is hydrogen, halogen or alkyl; R1 is alkyl, amino or substituted amino; R2 is optionally substituted phenyl; R3 is hydrogen, halogen or optionally substituted alkyl; R4 is hydrogen, optionally substituted alkyl, cycloalkyl, aryl, or aralkyl] have valuable analgesic, anti-inflammatory, anti-pyretic and anti-allergic activities and have the ability to inhibit the production of leukotrienes and to inhibit bone resorption. They are relatively free from the side effects which generally result from the administration of compounds having these kinds of activities.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: December 5, 2006
    Assignee: Sankyo Company, Limited
    Inventors: Tomio Kimura, Yasuo Noguchi, Akira Nakao, Keisuke Suzuki, Shigeru Ushiyama, Akihiro Kawara, Masaaki Miyamoto