Patents by Inventor Shigeo Murai

Shigeo Murai 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: 8440824
    Abstract: To provide a method for producing pyrimidine compound useful as an intermediate for agricultural chemicals or pharmaceuticals, which is simple in operation, presents high yield and produces only a small amount of by-products. The method comprises reacting a compound represented by the formula (I) with a compound represented by the formula (II) in the presence of a pyridine compound to produce a compound represented by the formula (III), a compound represented by the formula (IV) or their mixture.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 14, 2013
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Ryoji Koto, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takao Awazu, Hisayoshi Jonishi, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Patent number: 8338612
    Abstract: Because fluazinam is excellent as an active ingredient of pesticides and highly useful, it is desired to produce it efficiently in a proper form with simple operations at low cost in an environmentally friendly manner. The desired product is obtained in good yields with simple operations by using industrially advantageous reaction systems by a process comprising (1) a step of reacting ACTF and DCDNBTF in the presence of an alkali component, a solvent selected from the group consisting of ketones, nitriles, ethers and esters and a sufficient amount of water to substantially dissolve the alkali component, (2) a step of neutralizing or acidifying the reaction mixture with an acid and (3) a step of removing the solvent by distillation from the mixture containing fluazinam as the reaction product and the reaction solvent to precipitate crystals the product.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: December 25, 2012
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Publication number: 20110021774
    Abstract: To provide a method for producing pyrimidine compound useful as an intermediate for agricultural chemicals or pharmaceuticals, which is simple in operation, presents high yield and produces only a small amount of by-products. The method comprises reacting a compound represented by the formula (I) with a compound represented by the formula (II) in the presence of a pyridine compound to produce a compound represented by the formula (III), a compound represented by the formula (IV) or their mixture.
    Type: Application
    Filed: April 16, 2009
    Publication date: January 27, 2011
    Applicant: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Ryoji Koto, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takao Awazu, Hisayoshi Jonishi, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Publication number: 20100197930
    Abstract: Because fluazinam is excellent as an active ingredient of pesticides and highly useful, it is desired to produce it efficiently in a proper form with simple operations at low cost in an environmentally friendly manner. The desired product is obtained in good yields with simple operations by using industrially advantageous reaction systems by a process comprising (1) a step of reacting ACTF and DCDNBTF in the presence of an alkali component, a solvent selected from the group consisting of ketones, nitriles, ethers and esters and a sufficient amount of water to substantially dissolve the alkali component, (2) a step of neutralizing or acidifying the reaction mixture with an acid and (3) a step of removing the solvent by distillation from the mixture containing fluazinam as the reaction product and the reaction solvent to precipitate crystals the product.
    Type: Application
    Filed: July 29, 2008
    Publication date: August 5, 2010
    Applicant: Ishihara Sangyo Kaisha Ltd
    Inventors: Shigeo Murai, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Publication number: 20070060429
    Abstract: In blanking holes in plates that comprise a chain, in order to improve the fatigue strength of the chain, a press-punched plate prepared hole, trumpet-shaped, is shaved and made into a straight hole, both ends of the straight hole are chamfered, and further, a multi-step burnishing punch composed of a plurality of annular convex portions at predetermined intervals is pressed into the straight hole, improving the dimensional accuracy of the hole and the smoothness of the hole wall and producing compressive residual stress in the hole wall.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 15, 2007
    Inventors: Takuma Ono, Shigeo Murai
  • Patent number: 5998334
    Abstract: A pyrazole compound of the formula (I) or its salt: ##STR1## which is useful as a herbicide.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: December 7, 1999
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Shigeo Murai, Hiroshi Kikugawa, Hitoshi Nakayama, Makiko Sano, Akihiko Isogai
  • Patent number: 5869428
    Abstract: A pyridonesulfonylurea compound of the formula (I) or its salt: ##STR1## wherein Q is ##STR2## for use as a herbicide, wherein the variables are hereinbelow defined.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: February 9, 1999
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Yasuo Morishima, Shigeo Murai, Yoshiyuki Aoyama, Hiroshi Sasaki, Hiroshi Kikugawa, Soichiro Nagayama, Makiko Mitani
  • Patent number: 5583231
    Abstract: A substituted pyridinesulfonamide compound or its salt represented by the following general formula (I): ##STR1## wherein A is CH or N; when A is CH, R.sub.1 and R.sub.2 may be either each independently a member selected from the group consisting of unsubstituted or substituted alkyl groups, unsubstituted or substituted alkenyl groups, unsubstituted or substituted cycloalkyl groups, and unsubstituted or substituted phenyl groups; when A is N, R.sub.1 is an unsubstituted or substituted alkyl group, R.sub.2 is an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups, is disclosed. This compound is useful as the effective ingredient of a herbicide showing a wide weed-control spectrum even if used in a small amount.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: December 10, 1996
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Nobuyuki Sakashita, Toshio Nakajima, Shigeo Murai, Kazuyuki Maeda, Yuji Nakamura, Tsunezo Yoshida, Shooichi Honzawa, Fumio Kanamori
  • Patent number: 5457084
    Abstract: A substituted pyridinesulfonamide compound or its salt represented by the following formula (I): ##STR1## wherein A is CH; R.sub.1 and R.sub. 2 are each independently a member selected from the group consisting of unsubstituted or substituted alkyl groups, unsubstituted or substituted alkenyl groups, unsubstituted or substituted cycloalkyl groups, and unsubstituted or substituted phenyl groups; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups. This compound is an effective ingredient in a herbicide showing a wide weed-control spectrum even when used in a small amount.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: October 10, 1995
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Nobuyuki Sakashita, Toshio Nakajima, Shigeo Murai, Kazuyuki Maeda, Yuji Nakamura, Tsunezo Yoshida, Shooichi Honzawa, Fumio Kanamori
  • Patent number: 5348933
    Abstract: A substituted pyridinesulfonamide compound or its salt represented by the following general formula (I): ##STR1## wherein A is CH or N; when A is CH, R.sub.1 and R.sub.2 may be either each independently a member selected from the group consisting of unsubstituted or substituted alkyl groups, unsubstituted or substituted alkenyl groups, unsubstituted or substituted cycloalkyl groups, and unsubstituted or substituted phenyl groups; when A is N, R.sub.1 is an unsubstituted or substituted alkyl group, R.sub.2 is an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups, is disclosed. This compound is useful as the effective ingredient of a herbicide showing a wide weed-control spectrum even if used in a small amount.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: September 20, 1994
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Nobuyuki Sakashita, Toshio Nakajima, Shigeo Murai, Kazuyuki Maeda, Yuji Nakamura, Tsunezo Yoshida, Shooichi Honzawa, Fumio Kanamori
  • Patent number: 5168113
    Abstract: A mercapto-substituted pyridine compound having formula (I): ##STR1## where R.sub.1 and R.sub.2 are alkyl groups, and n is 0 or 1, and salts thereof and a process for preparing the same are disclosed. The mercapto-substituted pyridine compound is useful as an intermediate for preparing a herbicidal compound.The present invention further provides aminocarbonyl-substituted pyridinesulfinic acid (ACPS) or salts thereof as the precursor of aminosulfonyl-substituted pyridinecarbonic acid amide compound (APCA) which is useful as the starting material for agricultural chemicals, medicine, etc. Moreover, the preparation process of the present invention is an industrially advantageous preparation process which is capable of preparing in a series of steps from mercapto-substituted pyridinecarboxylic acid amide compound (MPCA) or aminocarbonyl-substituted halogenopyridine compound (ACHP) to ACPS or salts thereof, and further to APCA.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: December 1, 1992
    Inventors: Takahiro Haga, Yasuhiro Tsujii, Tatsuo Isogai, Shigeo Murai, Hisayoshi Jonishi, Tokiya Kimura, Hiroshi Sasaki, Takao Awazu, Toshihiro Tanaka
  • Patent number: 5139565
    Abstract: A substituted pyridinesulfonamide compound having the formula (I): ##STR1## wherein R.sub.1 is an alkyl group, a haloalkyl group, an alkoxyalkyl group or an alkenyl group, R.sub.2 is a hydrogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group or an alkenyl group, R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group, a haloalkyl group, an alkoxy group, an alkylthio group, an alkoxyalkyl group, an alkylamino group or a dialkylamino group, and each of X and Y which are independent from each other, is a halogen atom, an alkyl group, an alkoxy group or a haloalkoxy group, or salt thereof, a preparation thereof, a herbicidal composition containing it and intermediate thereof.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: August 18, 1992
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Fumio Kimura, Takahiro Haga, Nobuyuki Sakashita, Shigeo Murai, Yuji Nakamura, Shooichi Honzawa
  • Patent number: 5128474
    Abstract: An aminocarbonyl-substituted pyridinesulfinic acid intermediate for production of an herbicide having formula (V): ##STR1## wherein R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen and alkyl groups, or a salt thereof. The aminocarbonyl-substituted pyridinesulfinic acid or salt thereof is useful as the precursor of aminosulfonyl-substituted pyridinecarbonic acid amide, which in turn is useful as the starting material for agricultural chemicals, medicine, etc.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: July 7, 1992
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Takahiro Haga, Yasuhiro Tsujii, Tatsuo Isogai, Shigeo Murai, Hisayoshi Jonishi, Tokiya Kimura, Hiroshi Sasaki, Takao Awazu, Toshihiro Tanaka
  • Patent number: 4929729
    Abstract: The present invention relates to an industrially advantageous process for producing 2-amino-4,6-dichloropyrimidine, which comprises reacting 2-amino-4,6-dihydroxypyrimidine or its salt with phosphorus oxychloride at a temperature of from 50.degree. to 100.degree. C. in the presence of a solvent and an acid removing agent. Further, the yield of 2-amino-4,6-dichloropyrimidine can be improved by hydrolyzing 4,6-dichloro-2-pyrimidinylphosphoramidic dichloride produced as a by-product of the chlorination reaction to form 2-amino-4,6-dichloropyrimidine. The 2-amino-4,6-dichloropyrimidine produced by the process of the present invention is useful as an intermediate for medicines and agricultural chemicals.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: May 29, 1990
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Takahiro Haga, Yasuhiro Tsujii, Tatsuo Isogai, Shigeo Murai, Toshihiro Tanaka
  • Patent number: 4595423
    Abstract: The quality of a compound semiconductor crystal such as gallium arsenide used for an integrated circuit is upgraded by a method comprising optionally forming a protective film on the obverse surface and reverse surface of a substrate consisting of a compound semiconductor crystal, subjecting the substrate to a heat treatment in an inert atmosphere at a temperature of at least the same as the activating temperature after the ion implantation into the substrate and then optionally revmoving the protective film.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: June 17, 1986
    Assignees: Nippon Telegraph & Telephone Public Corporation, Sumitomo Electric Industries, Ltd.
    Inventors: Shintaro Miyazawa, Shigeo Murai
  • Patent number: 4410345
    Abstract: The present invention relates to a method of producing an optical waveguide by melt-drawing a transparent glass rod which has been produced by collapsing a doped porous glass rod. The glass rod is doped with refractive index enhancing dopant materials by depositing said material on the surface of the micro-pores wherein a waveguide having higher mechanical strength and lower transmission loss is obtained upon drawing said glass rod to a fiber. The drawing is performed at a temperature very close to the melting point of the outermost portion of the rod without causing any overmelting and resultant bubbling in the core portion. The drawing process is facilitated by matching the viscosity and softening characteristics of the outer, lower refractive-index portion of the rod to that of the central higher-refractive-index portion.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: October 18, 1983
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yuichi Usui, Shigeo Murai, Shiro Kurosaki, Minoru Watanabe
  • 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
  • Patent number: 4344951
    Abstract: N-benzoyl N'-pyridyloxy phenyl ureas having the formula ##STR1## wherein X represents a halogen atom; R represents a C.sub.1 -C.sub.4 alkyl group and n is 0, 1 or 2 are useful as insecticides.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: August 17, 1982
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Takahiro Haga, Tadaaki Toki, Tohru Koyanagi, Shigeo Murai
  • Patent number: 4310530
    Abstract: N-benzoyl N'-pyridyloxy phenyl ureas having the formula ##STR1## wherein X.sub.1 represents a hydrogen or halogen atom or methyl, trifluoromethyl or nitro group; X.sub.2 represents a hydrogen or halogen atom; X.sub.3, X.sub.4, X.sub.5 and X.sub.6 respectively represent a hydrogen or halogen atom or a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a C.sub.1 -C.sub.4 alkylcarbonyl group, a C.sub.1 -C.sub.4 alkoxycarbonyl group or nitro group; when X.sub.3 and X.sub.6 are both hydrogen atoms, at least one of X.sub.4 and X.sub.5 is a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a C.sub.1 -C.sub.4 alkylcarbonyl group, or a C.sub.1 -C.sub.4 alkoxycarbonyl group; and X.sub.7 represents a hydrogen or halogen atom; and Y represents oxygen or sulfur atom.
    Type: Grant
    Filed: September 3, 1980
    Date of Patent: January 12, 1982
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Ryuzo Nishiyama, Takahiro Haga, Tadaaki Toki, Tohru Koyanagi, Shigeo Murai
  • Patent number: H670
    Abstract: Mixtures of herbicidal pyridine sulfonamide compounds of formula: ##STR1## wherein X is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by 1 to 3 halogen atoms, and R is a hydrogen atom or a methyl group, and their salts, with at least one herbicidal compound selected from the group consisting of 2,4-D, Dicamba, Atrazine, Bentazone, Alcachlor, Metolachlor, Propachlor, Pendimethalin, Tridiphane, Cyanazine, Bromoxynil, Acetochlor, etc.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: September 5, 1989
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Fumio Kimura, Takahiro Haga, Nobuyuki Sakashita, Chimoto Honda, Shigeo Murai