Patents by Inventor Kunihiro Yabutani

Kunihiro Yabutani 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).

  • Process for producing 1,2,4-triazolin-5-one derivatives, and intermediates therefor
    Patent number: 4845232
    Abstract: A process for producing 1,2,4-triazolin-5-one derivatives represented by the general formula (I) ##STR1## wherein R is a haloalkyl group of 1 to 5 carbon atoms and R.sup.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: July 4, 1989
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Hisanori Matsui, Keiji Sutoh, Moriharu Yamamoto, Kazuhiro Takagi, Kunihiro Yabutani, Kuniaki Taninaka, Mitsuru Kajioka
  • Process for producing 1,3-dithiol-2-ylidene malonic acid dialkyl esters
    Patent number: 4329479
    Abstract: A 1,3-dithiol-2-ylidene malonic acid dialkyl ester chich was known as useful agricultural or horticultural fungicide and also as therapeutic agent for treating hepatic diseases can be prepared by a new process which comprises reacting a dialkyloxycarbonylketene dimercaptide with a 1,1-dihalogenoethylene.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: May 11, 1982
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Kunihiro Yabutani, Hisanori Matsui, Hiroshi Tanaka, Hitoshi Kurono
  • Process for producing 1,3-dithiol-2-ylidene malonates
    Patent number: 4327223
    Abstract: A 1,3-dithiol-2-ylidene malonic acid dialkyl ester which was known as useful agricultural or horticultural fungicide and also as therapeutic agent for treating hepatic diseases can be prepared by a new process which comprises reacting a dialkyloxycarbonylketene dimercaptide with a trihalogenoethane in the presence of a base.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: April 27, 1982
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Hisanori Matsui, Hiroshi Tanaka, Kunihiro Yabutani, Hitoshi Kurono
  • Process for producing .alpha., .alpha., .alpha.-trifluoro-o-toluic fluoride
    Patent number: 4305889
    Abstract: .alpha.,.alpha.,.alpha.-trifluoro-o-toluic fluoride is produced in good yield and high purity by reacting anhydrous hydrogen fluoride with 1,1,3,3-tetrachloro-1,3-dihydroisobenzofuran or a mixture of .alpha.,.alpha.,.alpha.-trichloro-o-toluic chloride therewith, the mixture being preferably produced by sufficiently photochlorinating o-toluic chloride in mild conditions.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: December 15, 1981
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Tsumoru Kodaira, Kunihiro Yabutani, Hitoshi Kurono
  • Novel benzoic anilide derivative and fungicide containing same
    Patent number: 4093743
    Abstract: O-Trifluoromethylbenzoic m'-isopropoxyanilide formed by the reaction between o-trifluoromethylbenzoic acid and m-isopropoxyaniline is very effective in controlling agricultural and horticultural plant diseases.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: June 6, 1978
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Kunihiro Yabutani, Kenichi Ikeda, Shigenori Hatta, Tatsuo Harada