Patents by Inventor Taichiro Shigematsu

Taichiro Shigematsu 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).

  • Method for controlling viral diseases in plants
    Patent number: 4229433
    Abstract: Chemicals containing an effective amount of a polymer of a specified salt of diallylamine derivative and/or a diallyl quarternary ammonium salt exhibit a remarkable effect of preventing agricultural plants from being infected with viral diseases in plants. A method for controlling viral diseases in plants by using an effective amount of such polymer is described.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: October 21, 1980
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Taichiro Shigematsu, Tetsuya Shibahara, Tetsuo Nakajima
  • Fungicidal 6-(3,5-dichlorophenyl)perhydroimidazo[5,1-b]thiazole derivatives
    Patent number: 4229461
    Abstract: This invention relates to fungicidal novel derivatives of 6-(3,5-dichlorophenyl)perhydroimidazo[5,1-b]thiazole derivative. These compounds may be used for controlling fungal infection, especially in agriculture.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: October 21, 1980
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Taichiro Shigematsu, Kenji Yoshida, Makoto Nakazawa, Hiroshi Kasugai, Masataka Tsuda
  • Plant viral disease preventive alginate containing compositions
    Patent number: 4226855
    Abstract: A plant viral disease preventive composition contains an alginate, as active ingredient, having properties of:(a) neutralization degree of 10 to 30%, said neutralization degree (wt %) being given from: ##EQU1## where (C.sub.5 H.sub.7 O.sub.4 COOH).sub.n is the molecular formula of the alginate, m is the number of the carboxylate groups in one molecule of the alginate, and M is an alkali metal or ammonium group; and/or(b) viscosity in a 1 wt % aqueous solution at 20.degree. C. is 2 to 10 centipoises.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: October 7, 1980
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Taichiro Shigematsu, Tetsuya Shibahara, Hiroshi Kasugai, Tetsuo Nakajima, Shozo Motojima
  • Chemicals for controlling plant virus diseases and control method
    Patent number: 4166846
    Abstract: Chemicals containing an effective amount of homopolymers of dialkylaminoalkyl acrylate derivatives or dialkylaminoalkyl methacrylate derivatives or copolymers of such derivatives with ethylenically unsaturated monomers copolymerizable therewith. The chemicals exhibit a remarkable effect of preventing agricultural plants from being infected with plant virus diseases. A method for controlling the plant virus diseases is also described.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: September 4, 1979
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Taichiro Shigematsu, Hiroshi Kasugai, Tetsuya Shibahara, Tetsuo Nakajima, Toru Teraoka
  • Agricultural fungicidal composition
    Patent number: 4162315
    Abstract: There is disclosed a fungicide comprising, as the active ingredient, a 1,2-alkylene-4-(3',5'-dichlorophenyl) urazole derivative suitable for preventing various diseases of plants including fruit trees, vegetables, rice plant and beans.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: July 24, 1979
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Taichiro Shigematsu, Tetsuya Shibahara, Makoto Nakazawa, Masayuki Tomida, Toshio Munakata
  • 4-Dichlorophenylurazole compounds and use in agricultural fungicidal compositions
    Patent number: 4088767
    Abstract: There is disclosed a fungicide comprising as active ingredient a 1,2-substituted-4-(3',5'-dichlorophenyl) urazole derivative suitable for preventing various diseases of plants including fruit trees, vegetables, rice plants and beans.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: May 9, 1978
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Taichiro Shigematsu, Tetsuya Shibahara, Makoto Nakazawa, Masayuki Tomida, Toshio Munakata
  • Substituted urazole and thiourazole compounds as agricultural fungicidal agents
    Patent number: 4049820
    Abstract: There is disclosed a fungicide comprising, as the active ingredient, a 1,2-alkylene-4-(3',5'-dichlorophenyl) urazole derivative suitable for preventing various diseases of plants including fruit trees, vegetables, rice plants and beans.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: September 20, 1977
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Taichiro Shigematsu, Tetsuya Shibahara, Makoto Nakazawa, Masayuki Tomida, Toshio Munakata
  • Method for producing N-(4-fluorophenyl)-2,3,-dichloromaleimide
    Patent number: 4010182
    Abstract: N-(4-fluorophenyl)-2,3-dichloromaleimide of uniform grain size is produced either by reacting 2,3-dichloromaleic acid, an anhydride or an ester thereof with 4-fluoroaniline in an aqueous medium or by dehydrative-cyclization of either N-(4-fluorophenyl)-2,3-dichloromaleamic acid or 4-fluoroanilinium 2,3-dichloromaleate in an aqueous medium. The N-(4-fluorophenyl)-2,3-dichloromaleimide of uniform grain size provides improved fungicidal activity and is convenient for preparing an agricultural fungicidal composition.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: March 1, 1977
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Kazuo Matsui, Taichiro Shigematsu, Tetsuya Shibahara, Makoto Nakazawa