Patents by Inventor Tomohiko Kitsukawa

Tomohiko Kitsukawa 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 separating phenylalanine and cinnamic acid
    Patent number: 4604483
    Abstract: In a method of separating phenylalanine and cinnamic acid from a mixed solution containing phenylalanine and cinnamic acid, a method of separating phenylalanine and cinnamic acid which comprises subjecting said mixed solution to chromatographic development using a synthetic adsorbent, such as Diaion, Amberlite etc., in the presence of a salt, such as ammonium halides, ammonium sulfate, alkali metal nitrates, ammonium and alkali metal salts of fatty acids, at a concentration in the range where the salting-out effect on cinnamic acid is greater than that on phenylalanine and also both phenylalanine and cinnamic acid can be dissolved, for example, in the range of 0.2-5N.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: August 5, 1986
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Tomohiko Kitsukawa, Hiroshi Kusano, Eiji Miyata, Toyokazu Sugawara