Patents by Inventor Chikako Kiyohara

Chikako Kiyohara 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).

  • Expectorant comprising hydroxyalkylcysteine derivative
    Patent number: 5047428
    Abstract: An expectorant comprising a hydroxyalkylcysteine derivative of the following formula (I) is disclosed. ##STR1## wherein n represents an integer of 1 to 4. The expectorant is stabile, has little side effects and toxicity, and exhibits an excellent expectorant effect.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: September 10, 1991
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Hiroyuki Mizuno, Chikako Kiyohara, Susumu Sato, Tatsuhiko Katori
  • Hydroxyalkylcysteine derivative and expectorant containing the same
    Patent number: 4906665
    Abstract: Novel hydroxyalkylcysteine derivatives of the following formula (I) and an expectorant comprising the same are disclosed. ##STR1## wherein n represents an integer of 5 to 24. The expectorant is stabile, has little side effects and toxicity, and exhibits an excellent expectorant effect.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: March 6, 1990
    Assignee: SS Pharmaceutical Co., Ltd.
    Inventors: Yoshikuni Itoh, Hiroyuki Mizuno, Chikako Kiyohara, Susumu Sato, Tatsuhiko Katori