Patents by Inventor Kahei Takase

Kahei Takase 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
  • Azulene derivatives and their use as hypocholesterolemics
    Patent number: 4656194
    Abstract: An azulene derivative capable of exerting a hypocholesterolemic effect on a mammal which is represented by the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 alkyl groups and C.sub.2 -C.sub.12 alkenyl groups.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: April 7, 1987
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masabumi Yasunami, Kahei Takase, Akira Shinji, Toru Mimura, Kunio Torii, Takaaki Kobayashi, Masaru Okutsu, Takashi Meguro
  • Azulene derivatives, processes of their synthesis and their uses as anti-ulcerative and anti-inflammatory agents
    Patent number: 4595694
    Abstract: A new series of azulene derivatives are disclosed. These compounds are stable to light and heat and are useful as anti-ulcerative and anti-inflammatory agents. Such compounds can be synthesized by reacting 2H-cyclohepta(b) furan-2-one or its derivative substituted by a lower alkyl with a suitable enamine derived from a corresponding aldehyde or ketone, and then sulfonating the compound resulting from said reaction.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: June 17, 1986
    Assignee: Kotobuki Seiyaku Co. Ltd.
    Inventors: Kahei Takase, Masafumi Yasunami, Tsuyoshi Tomiyama, Akira Tomiyama, Takashi Yanagisawa