Patents by Inventor Takayoshi Mitsunaga

Takayoshi Mitsunaga 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).

  • Tablets having clear impressed marks and method for making same
    Patent number: 5002775
    Abstract: Disclosed are tablets having clear marks including letters, figures and the like which are impressed thereon wherein a material different in color tone from the portion other than the mark portion is deposited in the impressed valley portion and if necessary, these tablets are further applied with a coating and a method for producing the tablets.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: March 26, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazutoshi Toya, Nobuo Uchiyama, Seiko Miura, Takayoshi Mitsunaga, Hisao Tobiki
  • Water-soluble biotin-containing preparation
    Patent number: 4277488
    Abstract: A water-soluble biotin-containing preparation prepared by spray-drying an aqueous solution comprising biotin and lactose with ammonia to obtain dried particles. Biotin in this preparation is highly soluble in water.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: July 7, 1981
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takayoshi Mitsunaga, Kiyoto Chinushi, Tadashi Umezu