Patents by Inventor Ryo Yoshida

Ryo Yoshida 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).

  • Patent number: 5302739
    Abstract: Compounds of the formula ##STR1## as intermediates for the preparation of pyrimidine or triazine herbicides.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: April 12, 1994
    Assignees: Kumiai Chemical Industry Co., Ihara Chemical Industry Co., Ltd.
    Inventors: Masatoshi Tamaru, Norihiro Kawamura, Masahiro Sato, Fumiaki Takabe, Shigehiko Tachikawa, Ryo Yoshida
  • Patent number: 5270467
    Abstract: A compound is disclosed having the formula: ##STR1## wherein R.sup.1 represents a halo-(C.sub.1 to C.sub.6)-alkoxy group at the ortho or meta position, R.sup.2 and R.sup.3, which may be either the same or different, each represents a hydrogen atom, a halogen atom, a (C.sub.1 to C.sub.2)-alkyl group, a halo-(C.sub.1 to C.sub.2)-alkyl group, a (C.sub.1 to C.sub.2)-alkoxy group, a nitro group, a (C.sub.1 to C.sub.2)-alkylthio group, a halo-(C.sub.1 to C.sub.2)-alkylthio group or a halo-((C.sub.1 to C.sub.2)-alkoxy group, provided that both of R.sup.2 and R.sup.3, if each representing a substituent other than a hydrogen atom, are not at the ortho position for the pyrimidine ring at the same time, and W.sup.1 represents a methanesulfonyl group, or a methylthio group; provided that when W.sup.1 is a methylthio group, R.sup.1, R.sup.2 and R.sup.3 are R.sup.11, R.sup.22 and R.sup.33 wherein R.sup.11 represents a halo-(C.sub.1 to C.sub.6)-alkoxy group at the ortho or meta position, R.sup.22 and R.sup.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: December 14, 1993
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Junichi Sato, Yuzuru Sanemitsu, Shinichi Kawamura, Nobuaki Mito, Tatsuhiro Hamada, Ryo Yoshida
  • Patent number: 5242895
    Abstract: A pyrimidine or triazine derivative and its salt, said pyrimidine or triazine derivative having the formula: ##STR1## wherein R represents a group of the formula OR.sup.3 {wherein R.sup.3 represents a hydrogen atom, an alkyl group, etc.}, a group of the formula SR.sup.6 {wherein R.sup.6 represents a hydrogen atom, an alkyl group, etc.}, a group of the formula ##STR2## {wherein R.sup.7 and R.sup.8 represent a hydrogen atom, an alkyl group, etc.}, or an imidazolyl group:R.sup.1 represents a hydrogen atom, an alkyl group, etc.;R.sup.2 represents a hydroxyl group, an alkyl group, etc.;A and B represent an alkyl group, etc.;Y represents an oxygen atom, etc.; andZ represents a methine group or a nitrogen atom.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: September 7, 1993
    Assignees: Kumiai Chemical Co., Ihara Chemical Industry Co., Ltd.
    Inventors: Masatoshi Tamaru, Norihiro Kawamura, Masahiro Sato, Fumiaki Takabe, Shigehiko Tachikawa, Ryo Yoshida
  • Patent number: 5191105
    Abstract: A compound of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom and R is a C.sub.1 -C.sub.8 alkyl group except isopropyl, which is useful as a herbicide.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: March 2, 1993
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Eiki Nagano, Shunichi Hashimoto, Ryo Yoshida, Hiroshi Matsumoto, Katsuzo Kamoshita
  • Patent number: 5190575
    Abstract: A compound of the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, or a halogen atom, a (C.sub.1 to C.sub.3)-alkyl group, a halo-(C.sub.1 to C.sub.3)-alkyl group, a (C.sub.1 to C.sub.6)-alkoxy group, a (C.sub.2 to C.sub.6)-alkynyloxy group, a (C.sub.2 to C.sub.6)-alkenyloxy group, a halo-(C.sub.2 to C.sub.6)-alkynyloxy group, a halo-(C.sub.2 to C.sub.6)-alkenyloxy group, a (C.sub.1 to C.sub.2)-alkylthio group, a halo-(C.sub.1 to C.sub.6)-alkoxy group, a halo-(C.sub.1 to C.sub.2)-alkylthio group, a phenoxy group, a (C.sub.1 to C.sub.3)-alkylcarboxy group, a halo-(C.sub.1 to C.sub.3)-alkylcarboxy group, a (C.sub.1 to C.sub.2)-alkoxy-(C.sub.1 to C.sub.2)-alkoxy group, a halo-(C.sub.1 to C.sub.2)-alkoxy-halo-(C.sub.2 to C.sub.3)-alkoxy group, a (C.sub.1 to C.sub.3)-alkylsulfonyloxy group, a halo-(C.sub.1 to C.sub.3)-alkylsulfonyloxy group, a cyano group, a (C.sub.1 to C.sub.3)-alkoxycarbonyl group or an aminomethyl group, at the ortho or meta position; R.sup.2 and R.sup.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: March 2, 1993
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Junichi Sato, Yuzuru Sanemitsu, Shinichi Kawamura, Nobuaki Mito, Tatsuhiro Hamada, Ryo Yoshida
  • Patent number: 5173103
    Abstract: A herbicidal composition which comprises a herbicidally effective amount of the combinations of (a) 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6 ,7-tetrahydro-1H-isoindole-1,3(2H)-dione and (b) at least one of (2-amino-4-methylphosphinobutyryl)alanylalanine and its salt (bialaphos) and DL-homoalanin-4-yl(methyl)phosphinic acid and its salt (glufosinate), and an inert carrier or diluent. The composition exerts synergistic herbicidal activity.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: December 22, 1992
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Ryo Yoshida, Yoshihiro Mano, Hideyuki Shibata
  • Patent number: 5154750
    Abstract: A pyrimidine derivative having the formula, ##STR1## {wherein R.sup.1 is a hydrogen atom or an alkyl group, R.sup.2 is a group having the formula R.sup.3 O (wherein R.sup.3 is an alkoxyalkyl group, an aralkyl group, an alkylcarbonyl group, a phenylcarbonyl group, a substituted phenylcarbonyl group or an alkoxycarbonyl group), a group having the formula ##STR2## wherein R.sup.4 and R.sup.5 may be the same or different and are a hydrogen atom or an alkyl group), a group having the formula ##STR3## (wherein n is 0 or 1), a phthalimide group or a dioxolanylmethyl group, and A and B may be the same or different and are an alkyl group, an alkoxy group, a haloalkyl group, a haloalkoxy group, an amino group, a monoalkylamino group, a dialkylamino group, a cyano group or a halogen atom}, and a herbicidal composition containing said pyrimidine derivative as an active ingredient.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: October 13, 1992
    Assignees: Kumiai Chemical Industry Co. Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Nobuhide Wada, Ryo Yoshida
  • Patent number: 5118339
    Abstract: A pyrimidine or triazine derivative and its salt, said pyrimidine or triazine derivative having the formula: ##STR1## wherein R represents a group of the formula OR.sub.3 {wherein R.sup.3 represents a hydrogen atom, an alkyl gorup, etc.}, a group of the formula SR.sup.6 {wherein R.sup.6 represents a hydrogen atom, an alkyl group, etc.}, a group of the formula ##STR2## {wherein R.sup.7 and R.sup.8 represent a hydrogen atom, an alkyl group, etc.}, or an imidazolyl group:R.sup.1 represents a hydrogen atom, an alkyl group, etc.;R.sup.2 represents a hydroxyl group, an alkyl group, etc.;A and B represent an alkyl group, etc.;Y represents an oxygen atom, etc.; andZ represents a methine group or a nitrogen atom.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: June 2, 1992
    Assignees: Kumiai Chemical Co., Ihara Chemical Industry Co., Ltd.
    Inventors: Masatoshi Tamaru, Norihiro Kawamura, Masahiro Sato, Fumiaki Takabe, Shigehiko Tachikawa, Ryo Yoshida
  • Patent number: 5114463
    Abstract: A herbicidal pyrimidine derivative having the formula, ##STR1## wherein R is a lower alkyl group, and R.sup.1 is a lower alkoxy group, a halogen atom or a halogen-substituted lower alkoxy group.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: May 19, 1992
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Nobuhide Wada, Ryo Yoshida
  • Patent number: 5098463
    Abstract: A herbicidal composition which comprises as an active ingredient a herbicidally effective amount of the combination of (a) 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6 ,7-tetrahydro-1H-isoindole-1,3(2H)-dione and (b) a compound of the formula: ##STR1## wherein R.sub.1 is any one of the formulas: ##STR2## wherein R.sub.2 is a C.sub.1 -C.sub.4 alkyl group, and an inert carrier or diluent. The composition shows a synergistic herbicidal potency.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: March 24, 1992
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Ryo Yoshida, Yoshihiro Mano, Hideyuki Shibata
  • Patent number: 5087289
    Abstract: A herbicidal alkanoic acid derivative of the formula: ##STR1## wherein R.sup.3 is a hydrogen atom, a halogen atom, a halogen-substituted alkyl group, an alkyl group, a cycloalkyl group, an alkylthioalkyl group, a hydroxyalkyl group, a hydroxyl group, a cyano group, an acyloxyalkyl group, a thienyl group, a naphthyl group, a dihydronaphthyl group ##STR2## wherein R.sup.8 is a hydrogen atom, a halogen atom, a nitro group, an alkyl group, an alkoxy group or --S(O).sub.n R.sup.9 wherein R.sup.9 is an alkyl group, and n is an integer of from 0 to 2, m is an integer of from 0 to 2, each of R.sup.2 and R.sup.4 which may be the same or different is a hydrogen atom or an alkyl group, or R.sup.2 and R.sup.4 form together with the adjacent carbon atom a 3-, 4-, 5- or 6-membered ring which may contain an oxygen atom and may be substituted by one or two alkyl groups, each of R.sup.5 and R.sup.6 which may be the same or different is a hydrogen atom or an alkyl group, R.sup.7 is an alkyl group or a phenyl group, or R.sup.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: February 11, 1992
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Koichiro Kaku, Nobuhide Wada, Akira Takeuchi, Yasufumi Toyokawa, Takeshige Miyazawa, Ryo Yoshida, Kazuhiko Sugiyama
  • Patent number: 5080711
    Abstract: A herbicidal composition which comprises as the active ingredients (a) 2-(4-chloro- fluoro-5-n-pentyloxycarbonylmethoxyphenyl)-4,5,6,7-tetrahydro-2H-isoindole - 1,3-dione and (b) at least one of methyl 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenoneoxime-O-acetate (PPG-1013), 1-(carboethoxy)ethyl 5-[2-chloro-4-trifluoromethyl)phenyl]-2-nitrobenzoate (lactofen) and 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinol inecarboxylic acid (imazaquin), and an inert carrier or diluent. Said composition exerts an enhanced herbicidal potency.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: January 14, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kouichi Morita, Ryo Yoshida
  • Patent number: 5047080
    Abstract: A herbicidal composition which comprises as the active ingredients (a) 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazine-6-yl]-4,5, 6,7-tetrahydro-1H-isoindole-1,3(2H)-dione and (b) at least one of 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1- one (sethoxydim) and methyl 4-hydroxy-6,6-dimenthyl-2-oxo-3-[1-[(2-propenyloxy)imino]butyl]-3-cyclohex ene-1-carboxylate (alloxydim), and an inert carrier or diluent.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: September 10, 1991
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Ryo Yoshida, Yoshiro Mano, Hideyuki Shibata
  • Patent number: 5030761
    Abstract: A compound of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, which is useful as a herbicide.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: July 9, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Eiki Nagano, Shunich Hashimoto, Ryo Yoshida, Hiromichi Oshio, Katsuzo Kamoshita
  • Patent number: 5030760
    Abstract: A compound of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom and R is a C.sub.1 -C.sub.8 alkyl group except isopropyl, which is useful as a herbicide.
    Type: Grant
    Filed: September 18, 1984
    Date of Patent: July 9, 1991
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Eiki Nagano, Shunichi Hashimoto, Ryo Yoshida, Hiroshi Matsumoto, Katsuzo Kamoshita
  • Patent number: 4975114
    Abstract: A herbicidal composition which comprises as an active ingredient a herbicidally effective amount of the combination of (a) 2-[7-fluoro-3,4-dihydro-3-oxo-4-(2-propynyl)-2H-1,4-benzoxazin-6-yl]-4,5,6 ,7-tetrahydro-1H-isoindole-1,3(2H-dione and (b) a compound of the formula: ##STR1## wherein R.sub.1 is any one of the formulas: ##STR2## wherein R.sub.2 is a C.sub.1 -C.sub.4 alkyl group, and an inert carrier or diluent. The composition shows a synergistic herbicidal potency.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: December 4, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Ryo Yoshida, Yoshihiro Mano, Hideyuki Shibata
  • Patent number: 4968340
    Abstract: A herbicidal alkanoic acid derivative of the formula: ##STR1## wherein R is ##STR2## wherein R.sup.3 is a hydrogen atom, a halogen atom, a halogen-substituted alkyl group, an alkyl group, a cycloalkyl group, an alkylthioalkyl group, a hydroxyalkyl group, a hydroxyl group, a cyano group, an acyloxyalkyl group, a thienyl group, a naphthyl group, a dihydronaphthyl group or ##STR3## wherein R.sup.8 is a hydrogen atom, a halogen atom, a nitro group, an alkyl group, an alkoxy group or --S(O).sub.n R.sup.9 wherein R.sup.9 is an alkyl group, and n is an integer of from 0 to 2, m is an integer of from 0 to 2, each of R.sup.2 and R.sup.4 which may be the same or different is a hydrogen atom or an alkyl group, or R.sup.2 and R.sup.4 form together with the adjacent carbon atom a 3-, 4-, 5- or 6-membered ring which may contain an oxygen atom and may be substituted by one or two alkyl groups, each of R.sup.5 and R.sup.6 which may be the same or different is a hydrogen atom or an alkyl group, R.sup.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: November 6, 1990
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Koichiro Kaku, Nobuhide Wada, Akira Takeuchi, Yasufumi Toyokawa, Takeshige Miyazawa, Ryo Yoshida, Kazuhiko Sugiyama
  • Patent number: 4938859
    Abstract: In a high frequency ion plating device, when an evaporation substrate is intended to be rotated to form a uniform evaporated film, a variation in resistance of a contact in a rotating portion arises, making it almost impossible to provide a constant duration of high frequency discharge.A supply of a high frequency power to the substrate is effected through an auxiliary electrode such as a coil, and a dc voltage is induced in the auxiliary electrode and applied to the substrate simultaneously with a high frequency voltage. As a result of the coil the high frequency discharge is stabilized, and a stabilized supply of power is rendered possible.
    Type: Grant
    Filed: July 30, 1985
    Date of Patent: July 3, 1990
    Assignee: Vacuum Optics Corporation of Japan
    Inventors: Yoshio Ide, Masahiro Mori, Ryo Yoshida, Masaaki Miyake, Tsukasa Sawaki, Kazuo Hara
  • Patent number: 4938795
    Abstract: A tetrahydrophthalimide compound of the formula: ##STR1## wherein R is methyl or n-pentyl, which is useful as a post emergent herbicide for soybean field.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: July 3, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Eiki Nagano, Shunichi Hashimoto, Ryo Yoshida, Hiroshi Matsumoto, Katsuzo Kamoshita
  • Patent number: 4935050
    Abstract: A herbicidal composition which comprises as the active ingredients (a) 2-(4-chloro-2-fluoro-5-n-pentyloxy-carbonylmethoxyphenyl)-4,5,6,7-tetrahyd ro- -2H-isoindole-1,3-dione and (b) at least one of methyl 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitroacetophenoneoxime-O-acetate (PPG-1013), 1-(carboethoxy)ethyl 5-[2-chloro-4-trifluoromethyl)phenyl]-2-nitrobenzoate (lactofen) and 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinol inecarboxylic acid (imazaquin), and an inert carrier or diluent. Said composition exerts an enhanced herbicidal potency.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: June 19, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kouichi Morita, Ryo Yoshida