Patents by Inventor Kiyomi Kikugawa

Kiyomi Kikugawa 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).

  • Method of separating blood cells components
    Patent number: 4130642
    Abstract: A method of separating blood cell components, characterized in that a blood cells suspension containing red cells and at least one of leucocytes and blood platelets is passed through a processing column packed with an Egyptian cotton which has been de-fatted and bleached, thereby allowing the blood cells components other than the red cells to be adsorbed substantially completely on the Egyptian cotton and permitting the red cells portion alone to be isolated.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: December 19, 1978
    Assignee: Terumo Corporation
    Inventors: Kiyomi Kikugawa, Kyoko Minoshima
  • Process for preparing 2-thioadenosine
    Patent number: 3989682
    Abstract: A process for preparing 2-thioadenosine, useful as an intermediate for the preparation of S-substituted-2-thioadenosines having a platelet aggregation inhibitory activity and a coronary vasodilating activity, which comprises reacting 5-amino-1-.beta.-D-ribofuranosylimidazole-4-carboxamide oxime or an O-substituted oxime thereof with carbon disulfide in a closed reaction zone at a temperature of from about 50.degree. to about 200.degree. C in a solvent.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: November 2, 1976
    Assignee: Kohjin Co., Ltd.
    Inventors: Hideo Suehiro, Kiyomi Kikugawa, Motonobu Ichino, Tokuro Nakamura
  • S-substituted-2-thioadenosines
    Patent number: 3968102
    Abstract: S-Substituted-2-thioadenosines represented by the formula (I): ##SPC1##wherein R is as defined hereinafter, useful as a platelet aggregation inhibitor and a coronary vasodilator.
    Type: Grant
    Filed: April 16, 1975
    Date of Patent: July 6, 1976
    Assignee: Kohjin Co., Ltd.
    Inventors: Hideo Suehiro, Kiyomi Kikugawa, Motonobu Ichino, Tokuro Nakamura