Patents by Inventor Koichiro Hirano

Koichiro Hirano 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).

  • Lymph-absorbable aryl substituted imidazole derivatives
    Patent number: 6054591
    Abstract: A compound of the formula (I): ##STR1## salt thereof, or hydrate thereof which can effectively be absorbed from the lymph vessel in the intestinal tract and transferred to the lymph node in a high concentration is provided.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: April 25, 2000
    Assignee: Shionogi & Co., Ltd.
    Inventors: Katsutoshi Aono, Teruhisa Ichihashi, Tamio Sugawara, Koichiro Hirano
  • Process for preparing noncohesive coating layer
    Patent number: 5480655
    Abstract: A process for producing microcapsules with an adhesive coating layer which comprises forming a slurry of microcapsules in a medium selected from water, one or more organic solvents or a mixture thereof by a coacervation method, adding powders of a pharmaceutically acceptable inorganic compound which is insoluble in the medium to the slurry, so that the inorganic compound adheres to substantially the overall surface of the adhesive coating layer, and separating the microcapsules from the medium.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: January 2, 1996
    Assignee: Shionogi Seiyaku Kabushiki Kaisha
    Inventors: Hiroaki Jizomoto, Koichiro Hirano, Eri Kanaoka