Patents by Inventor Osamu Hiwatashi

Osamu Hiwatashi 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).

  • Azulene derivatives and pharmaceutical compositions containing them
    Patent number: 4912134
    Abstract: Azulene derivatives of the following formula ##STR1## wherein R.sup.1 stands for an alkyl group of 1 to 3 carbon atoms, R.sup.2 stands for an alkyl group of 1 to 3 carbon atoms, and R.sup.3 is at the 5- or 6-position and stands for an alkyl group of 1 to 6 carbon atoms, an aryl group of 6 to 9 carbon atoms or an aralkyl group of 7 to 10 carbon atoms; have antihyperlipidemic activity. Many of the compounds are also novel per se.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: March 27, 1990
    Assignee: Ajinomoto Company, Inc.
    Inventors: Masabumi Yasunami, Kahei Takase, Takashi Meguro, Katsumi Suzuki, Osamu Hiwatashi, Masaru Okutsu, Nobuo Kato, Toru Nakamura
  • Azulene derivatives and pharmaceutical compositions containing them
    Patent number: 4859701
    Abstract: Azulene derivatives of the following formula ##STR1## wherein R.sup.1 stands for an alkyl group of 1 to 3 carbon atoms, R.sup.2 stands for an alkyl group of 1 to 3 carbon atoms, and R.sup.3 is at the 5- or 6- position and stands for an alkyl group of 1 to 6 carbon atoms, an aryl group of 6 to 9 carbon atoms or an aralkyl group of 7 to 10 carbon atoms; have antihyperlipidemic activity. Many of the compounds are also novel per se.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: August 22, 1989
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masabumi Yasunami, Kahei Takase, Takashi Meguro, Katsumi Suzuki, Osamu Hiwatashi, Masaru Okutsu, Nobuo Kato, Toru Nakamura