Patents by Inventor Makoto Haketa

Makoto Haketa 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).

  • Cycloheptimidazole derivatives, method of manufacturing the same and therapeutic agents containing these compounds
    Patent number: 5409947
    Abstract: New therapeutic agents of cycloheptimidazole derivatives are disclosed, which are represented by the following formula or its alkali-addition salts. ##STR1## (wherein R.sub.1 represents H or isopropyl group; R.sub.2 represents a lower alkyl; R.sub.3 represents a carboxylic acid or tetrazole group. A and A.sub.1 are substituted groups at 4 or 8 position and A.sub.1 is a hydrogen or hydroxy group when A is a hydrogen or A and A.sub.1 is an oxo group. The dotted line "- - - -" is two double bonds or saturated single bonds).These compounds are useful as anti-hypertensive or anti-congestive heart failure agents.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: April 25, 1995
    Assignee: Kotobuki Seiyaku Co., Ltd.
    Inventors: Tsuyoshi Tomiyama, Akira Tomiyama, Takashi Yanagisawa, Naoto Ueyama, Tomoyuki Kawai, Motoharu Sonegawa, Hiromi Baba, Makoto Haketa