Patents by Inventor Chieko Ishijima

Chieko Ishijima 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).

  • Aromatic sulfonic acid salts of a proline derivative
    Patent number: 4786737
    Abstract: A compound which is: ##STR1## wherein R may be 1 to 5 H, Cl, Br, F, C.sub.1 -C.sub.4 straight chain or branched alkyl, OH, or CF.sub.3.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: November 22, 1988
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yasuo Irie, Fusayoshi Kakizaki, Chieko Ishijima, Michito Sumikawa, Naohiko Yasuda
  • Aromatic sulfonic acid salts of a proline derivative
    Patent number: 4720554
    Abstract: A compound which is: ##STR1## wherein R may be 1 to 5 H, Cl, Br, F, C.sub.1 -C.sub.4 straight chain or branched alkyl, OH, or CF.sub.3.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: January 19, 1988
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yasuo Irie, Fusayoshi Kakizaki, Chieko Ishijima, Michito Sumikawa, Naohiko Yasuda