Patents by Inventor Tomoyuki Omura

Tomoyuki Omura 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).

  • Compositions controlling pH range of release and /or release rate
    Publication number: 20030130268
    Abstract: The present invention provides a composition controlling a pH range of release and/or a release rate, which contains (i) a thienotriazolodiazepine compound of the formula (I) 1
    Type: Application
    Filed: December 16, 2002
    Publication date: July 10, 2003
    Inventors: Kazuyoshi Sagara, Tomoyuki Omura, Hirofumi Samemoto, Hirotsugu Komatsu
  • Preparations with controlled release
    Patent number: 6303144
    Abstract: A controlled release preparation containing at least one kind of a pharmaceutically active ingredient, a male piece and a female piece, the pieces fitting together to enclose the active substance therein, wherein the male piece is made from a material that gels in the intestinal juice, is disclosed. In a preferable mode, the male piece contains an ethyl acrylate-methyl methacrylate-trimethylammonioethyl methacrylate chloride copolymer and a methacrylic acid-ethyl acrylate copolymer. In a preferable mode, the female piece is made from a water insoluble polymer. In a preferable mode, the dosage form is a tablet or a capsule.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: October 16, 2001
    Assignee: Welfide Corporation
    Inventor: Tomoyuki Omura