Patents by Inventor Isao Yokomichi

Isao Yokomichi 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 3,5-dichloroaniline from 1-bromo-2,4-dichlorobenzene
    Patent number: 4138436
    Abstract: 3,5-Dichloroaniline is advantageously produced by reacting 1-bromo-2,4-dichlorobenzene with a metal amide in liquid ammonia at a molar ratio of 1-bromo-2,4-dichlorobenzene to the metal amide of 1 : 2 to 7.The 3,5-dichloroaniline is useful as an intermediate for various agricultural chemicals, dyes and medicines.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: February 6, 1979
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Kuniaki Nagatani, Shigeyuki Nishimura
  • Pyridyl compound, herbicidal composition containing the same and method of use thereof
    Patent number: 4115102
    Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: September 19, 1978
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Nobuyuki Sakashita
  • Herbicidal compound, herbicidal composition containing the same and method of use thereof
    Patent number: 4092151
    Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: May 30, 1978
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Nobuyuki Sakashita
  • Alkoxyalkyl esters of substituted pyridyloxyphenoxy-2-propanoic acids, herbicidal composition containing the same and method of use thereof
    Patent number: 4083714
    Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: April 11, 1978
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Nobuyuki Sakashita
  • Herbicidal phenoxy-phenoxy alkane carboxylic acid derivatives
    Patent number: 4070177
    Abstract: A herbicide which comprises a compound as an active ingredient having the formula ##STR1## wherein X represents --H or --Cl; Y represents halogen atom or cyano group; Z.sub.1 represents --H or methyl group; Z.sub.2 represents --H, methyl or ethyl group; Z.sub.3 represents cyano group or ##STR2## group; R represents hydroxy group, --O-- cation group, C.sub.1 - C.sub.4 alkylthio group, C.sub.2 - C.sub.4 alkenylthio group, C.sub.2 - C.sub.4 alkynylthio group, C.sub.1 - C.sub.4 alkoxy group, C.sub.1 - C.sub.4 alkoxy- C.sub.1 - C.sub.4 alkoxy group, C.sub.2 - C.sub.4 alkenyloxy group, C.sub.2 - C.sub.4 alkynyloxy group, amino group, C.sub.1 - C.sub.4 alkylamino group, di-C.sub.1 - C.sub.4 alkylamino group or anilino group which can be substituted with halogen atom or C.sub.1 - C.sub.4 alkyl group.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: January 24, 1978
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Itaru Shigehara, Nobuyuki Sakashita
  • Herbicidal compound, herbicidal composition containing the same and method of use thereof
    Patent number: 4046553
    Abstract: .alpha.-[4-(5-Mono-substituted or 3,5-di-substituted-pyridyl-2-oxy)phenoxy]alkanecarboxylic acids and derivatives thereof useful as a herbicide; a herbicidal composition containing the compound; methods of controlling weeds using such materials and production of such materials.
    Type: Grant
    Filed: October 17, 1975
    Date of Patent: September 6, 1977
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Yasuhiro Tsujii, Nobuyuki Sakashita
  • Method of tobacco sucker inhibition
    Patent number: 4029490
    Abstract: The inhibition of the growth of tobacco plant suckers by the application to the tobacco plant of benzylthiolcarbamate having the formula, ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of acetyl, cyclohexyl, and C.sub.1.sub.-6 alkyl group;X and Y are selected from the group consisting of nitro, acetyl, amino,C.sub.1.sub.-3 alkylC.sub.1.sub.-3 alkoxyl, and halogen; andm and n are 0 or 1.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: June 14, 1977
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Kanichi Fujikawa, Ryohei Takahashi, Isao Yokomichi, Fumio Kimura, Takeo Kaji, Nobuyuki Sakashita
  • Herbicidal composition
    Patent number: 4017295
    Abstract: A herbicidal composition which comprises an active ingredient of a diphenylether having the formula ##STR1## wherein X represents a chlorine atom or a trifluoromethyl group; R represents a methyl or ethyl group and n represents an integer of 2 or 3; and an agriculturally acceptable adjuvant.
    Type: Grant
    Filed: July 21, 1975
    Date of Patent: April 12, 1977
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryohei Takahashi, Isao Yokomichi, Kazuyuki Maeda, Takahiro Haga
  • Isopropyl-N-(5-bromo or chloropyridyl-2)carbamate
    Patent number: 3969362
    Abstract: Compounds of the formula: ##SPC1##Wherein X represents chlorine or bromine have been found to be effective fungicides.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: July 13, 1976
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryohei Takahashi, Isao Yokomichi, Itaru Shigehara, Terumasa Komyoji
  • Herbicidal 2-halo-4-trifluoromethyl-4'-cyanophenyl-ethers
    Patent number: 3966453
    Abstract: A herbicidal compound having the formula ##SPC1##Wherein X represents a halogen atom; T represents a hydrogen or a halogen atom; Y represents a hydrogen atom, a halogen atom, lower alkyl, or lower alkoxy group; and Z represents a halogen atom, or a cyano group.
    Type: Grant
    Filed: March 25, 1975
    Date of Patent: June 29, 1976
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Tadaaki Toki, Shinzo Someya
  • Diphenyl ether compounds
    Patent number: 3957852
    Abstract: A diphenyl ether compound, such as 2,4'-dichloro-4-trifluoromethyl-3'-carbomethoxydiphenyl ether, which has herbicidal properties and is effective for controlling weeds using soil and/or foliage application and herbicidal compositions containing the same.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: May 18, 1976
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Kanichi Fujikawa, Isao Yokomichi, Nobuyuki Sakashita, Kazuyuki Maeda, Takahiro Haga
  • Herbicidal diphenyl ethers
    Patent number: 3950435
    Abstract: A herbicidal compund having the formula: ##SPC1##Wherein R represents allyloxy or (2-propynyl) oxy group.
    Type: Grant
    Filed: March 25, 1975
    Date of Patent: April 13, 1976
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryohei Takahashi, Kanichi Fujikawa, Isao Yokomichi, Tadaaki Toki, Shinzo Someya