Patents by Inventor Hisayoshi Jyonishi

Hisayoshi Jyonishi 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).

  • Amino-trifluoromethylpyridine compound
    Patent number: 4762928
    Abstract: A novel amino-trifluoromethylpyridine compound selected from the group consisting of 3-amino-5-trifluoromethylpyridine, 2-amino-4-trifluoromethylpyridine, and 2-amino-4,6-bis(trifluoromethyl)pyridine, and, a process for preparing the same by reacting a halogeno-trifluoromethylpyridine compound with ammonia at a temperature of 50.degree. to 200.degree. C. The compound is useful as an intermediate from which a compound effective in controlling various harmful organisms or an effective component compound of medicines can be easily derived.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: August 9, 1988
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Yasuhiro Tsujii, Tatsuo Isogai, Takao Awazu, Hisayoshi Jyonishi, Tokiya Kimura
  • Process for producing 2,6-difluorobenzonitrile
    Patent number: 4406841
    Abstract: A process for producing 2,6-difluorobenzonitrile comprises reducing a chloro fluorobenzonitrile selected from 3-chloro-2,6-difluorobenzonitrile, 3,5-dichloro-2,6-difluorobenzonitrile or a mixture thereof by hydrogen gas in the presence of a palladium or platinum catalyst at a temperature of 0.degree. to 200.degree. C.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: September 27, 1983
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Kanichi Fujikawa, Yasuhiro Tsujii, Shigeo Murai, Hisayoshi Jyonishi