Patents by Inventor Hiroaki Jizomoto

Hiroaki Jizomoto 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).

  • 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
  • Process for preparing liposome compositions
    Patent number: 4762720
    Abstract: Novel process for liposome compositions capable to retain larger amount of drugs with a small amount of phospholipid and to provide, therefore, safer medications of various drugs, which comprises dispersing freeze-dried MLV or SUV in an aqueous medium in the presence of both an active ingredient and a divalent cation to regenerate LUV or LOV entrapping said active ingredient.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: August 9, 1988
    Assignee: Shionogi & Co., Ltd.
    Inventor: Hiroaki Jizomoto
  • Process for preparing liposome composition
    Patent number: 4673567
    Abstract: Novel process for liposome compositions capable to retain larger amount of drugs with a small amount of phospholipid and to provide, therefore, safer medications of various drugs, which comprises dispersing multilamella vesicles or small unilamella vesicles in an aqueous medium in the presence of one or more clinically active ingredients at or over a temperature of the gel/liquid crystal-phase transition wherein lyophilization may be made before or after the dispersion.
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: June 16, 1987
    Assignee: Shionogi & Co., Ltd.
    Inventor: Hiroaki Jizomoto