Patents by Inventor Kosuke Kawada

Kosuke Kawada 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: 10087147
    Abstract: Provided are 5-(trifluoromethyl)pyrimidine derivatives useful as intermediates for pharmaceuticals and agrochemicals and as intermediates for electronic materials and methods for producing the same. 2,4-dichloro-5-(trifluoromethyl)pyrimidine is reacted with 2,2,2-trifluoroethanol, benzyl alcohol, or benzenethiol to obtain the intended 2-(2,2,2-trifluoroethoxy)-4-chloro-5-(trifluoromethyl)pyrimidine, 2-benzyloxy-4-chloro-5-(trifluoromethyl)pyrimidine, 2,4-bis(2,2,2-trifluoroethoxy)-5-(trifluoromethyl)pyrimidine, or 2-chloro-4-phenylthio-5-(trifluoromethyl)pyrimidine.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: October 2, 2018
    Assignee: TOSOH F-TECH, INC.
    Inventors: Takumi Kagawa, Daiki Shigehiro, Kosuke Kawada
  • Publication number: 20170217906
    Abstract: Provided are 5-(trifluoromethyl)pyrimidine derivatives useful as intermediates for pharmaceuticals and agrochemicals and as intermediates for electronic materials and methods for producing the same. 2,4-dichloro-5-(trifluoromethyl)pyrimidine is reacted with 2,2,2-trifluoroethanol, benzyl alcohol, or benzenethiol to obtain the intended 2-(2,2,2-trifluoroethoxy)-4-chloro-5-(trifluoromethyl)pyrimidine, 2-benzyloxy-4-chloro-5-(trifluoromethyl)pyrimidine, 2,4-bis(2,2,2-trifluoroethoxy)-5-(trifluoromethyl)pyrimidine, or 2-chloro-4-phenylthio-5-(trifluoromethyl)pyrimidine.
    Type: Application
    Filed: April 14, 2017
    Publication date: August 3, 2017
    Inventors: Takumi Kagawa, Daiki Shigehiro, Kosuke Kawada
  • Patent number: 9656970
    Abstract: Provided are 5-(trifluoromethyl)pyrimidine derivatives useful as intermediates for pharmaceuticals and agrochemicals and as intermediates for electronic materials and methods for producing the same. 2,4-dichloro-5-(trifluoromethyl)pyrimidine is reacted with 2,2,2-trifluoroethanol, benzyl alcohol, or benzenethiol to obtain the intended 2-(2,2,2-trifluoroethoxy)-4-chloro-5-(trifluoromethyl)pyrimidine, 2-benzyloxy-4-chloro-5-(trifluoromethyl)pyrimidine, 2,4-bis(2,2,2-trifluoroethoxy)-5-(trifluoromethyl)pyrimidine, or 2-chloro-4-phenylthio-5-(trifluoromethyl)pyrimidine.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: May 23, 2017
    Assignee: TOSOH F-TECH, INC.
    Inventors: Takumi Kagawa, Daiki Shigehiro, Kosuke Kawada
  • Publication number: 20160376241
    Abstract: Provided are 5-(trifluoromethyl)pyrimidine derivatives useful as intermediates for pharmaceuticals and agrochemicals and as intermediates for electronic materials and methods for producing the same. 2,4-dichloro-5-(trifluoromethyl)pyrimidine is reacted with 2,2,2-trifluoroethanol, benzyl alcohol, or benzenethiol to obtain the intended 2-(2,2,2-trifluoroethoxy)-4-chloro-5-(trifluoromethyl)pyrimidine, 2-benzyloxy-4-chloro-5-(trifluoromethyl)pyrimidine, 2,4-bis(2,2,2-trifluoroethoxy)-5-(trifluoromethyl)pyrimidine, or 2-chloro-4-phenylthio-5-(trifluoromethyl)pyrimidine.
    Type: Application
    Filed: April 23, 2015
    Publication date: December 29, 2016
    Inventors: Takumi Kagawa, Daiki Shigehiro, Kosuke Kawada
  • Patent number: 7615669
    Abstract: The present invention provides a process for producing highly pure fluoro-compounds by making use of N-(2-chloro-1,1,2-trifluoroethyl)diethylamine. The process produces little or no chlorinated by-products.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: November 10, 2009
    Assignee: Tosoh F-Tech, Inc.
    Inventors: Norihisa Kondo, Akio Watanabe, Hiroki Kanezaki, Kosuke Kawada
  • Publication number: 20090030228
    Abstract: The present invention provides a process for producing highly pure fluoro-compounds by making use of less costly and readily handleable N-(2-chloro-1,1,2-trifluoroethyl)diethylamine. The process produces little or no chlorinated by-products.
    Type: Application
    Filed: March 22, 2006
    Publication date: January 29, 2009
    Inventors: Norihisa Kondo, Akio Watanabe, Hiroki Kanezaki, Kosuke Kawada
  • Patent number: 7476768
    Abstract: A catalyst for oxidizing 2,2,2-trifluoroethanol to form trifluoroacetaldehyde. The catalyst has a long life and achieves high conversion and selectivity. The catalyst of the present invention comprises one or more metal oxides, including at least vanadium oxide, and zirconia as a carrier.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: January 13, 2009
    Assignee: Tosoh F-Tech, Inc.
    Inventors: Hideyuki Mimura, Akio Watanabe, Noritaka Nagasaki, Kosuke Kawada
  • Publication number: 20080132727
    Abstract: A catalyst for oxidizing 2,2,2-trifluoroethanol to form trifluoroacetaldehyde. The catalyst has a long life and achieves high conversion and selectivity. The catalyst of the present invention comprises one or more metal oxides, including at least vanadium oxide, and zirconia as a carrier.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 5, 2008
    Inventors: Hideyuki Mimura, Akio Watanabe, Noritaka Nagasaki, Kosuke Kawada
  • Patent number: 7220878
    Abstract: The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 22, 2007
    Assignee: Tosoh F-Tech, Inc.
    Inventors: Norihisa Kondo, Hideyuki Mimura, Kosuke Kawada, Shoji Arai
  • Publication number: 20060183937
    Abstract: An ?-pentafluoroethyl acrylic acid derivative represented by the general formula [I]: [wherein R represents a hydrogen atom, a non-substituted or substituted aromatic ring, or a straight or branched alkyl group having 1 to 20 carbon(s) which may have a cyclic moiety optionally substituted with at least one substituent (halogen atom, hydroxyl group, straight or branched alkoxy group having 1 to 10 carbon(s) which may have a cyclic moiety, non-substituted or substituted aromatic group)].
    Type: Application
    Filed: March 24, 2004
    Publication date: August 17, 2006
    Inventors: Kenji Tokuhisa, Hideyuki Mimura, Kosuke Kawada, Shoji Arai
  • Patent number: 7019162
    Abstract: A process for producing a 2-fluoro-3-oxoalkylcarboxylic acid ester by fluorinating 3-oxoalkylcarboxylic acid ester with a fluorine gas is provided. The process is characterized in that the concentration of 3-oxoalkylcarboxylic acid ester in the reaction mixture for fluorination is maintained at 3 wt % or higher. Also provided is a process for purifying 2-fluoro-3-oxoalkylcarboxylic acid ester characterized in that 2-fluoro-3-oxoalkylcarboxylic acid ester is produced at high yield and with less impurities by washing fluorinated 3-oxoalkylcarboxylic acid ester with 3 or more times as much water as the amount of reaction mixture. According to the processes of the present invention, not only is the generation of unwanted by-products minimized, but fluorinated 3-oxoalkylcarboxylic acid ester can be purified in an efficient manner.
    Type: Grant
    Filed: December 25, 2001
    Date of Patent: March 28, 2006
    Assignee: Tosoh F-Tech, Inc.
    Inventors: Norihisa Kondo, Hideyuki Mimura, Kazunori Nukui, Kosuke Kawada, Shoji Arai
  • Patent number: 6894197
    Abstract: A method for producing fluorinated alcohols from fluorinated alkyl halides can produce fluorinated alcohols at high product yield and at high selectivity in a single-step reaction. The method eliminates the need to use heavy metals and other toxic compounds that are difficult to handle or process. Specifically, the method produces a fluorinated alcohol represented by the following general formula (2): Rf(A)OH??(2) wherein Rf represents a perfluoroalkyl group having 1 to 10 carbon atoms; and A represents a straight-chained or branched saturated hydrocarbon group having 3 to 10 carbon atoms. The method is characterized in that it allows a fluorinated alkyl halide represented by the following general formula (1) to react with an alkali metal salt of 4-hydroxybutyrate in a gamma-butyrolactone solvent: Rf(A)X??(1) wherein Rf and A are as defined above; and X represents a halogen atom.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: May 17, 2005
    Assignee: Tosoh F-Tech, Inc.
    Inventors: Hideyuki Mimura, Kosuke Kawada, Shoji Arai
  • Publication number: 20040249190
    Abstract: The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 9, 2004
    Inventors: Norihisa Kondo, Hideyuki Mimura, Kosuke Kawada, Shoji Arai
  • Publication number: 20040152926
    Abstract: A method for producing fluorinated alcohols from fluorinated alkyl halides can produce fluorinated alcohols at high product yield and at high selectivity in a single-step reaction. The method eliminates the need to use heavy metals and other toxic compounds that are difficult to handle or process.
    Type: Application
    Filed: March 1, 2004
    Publication date: August 5, 2004
    Inventors: Hideyuki Mimura, Kosuke Kawada, Shoji Arai
  • Publication number: 20040054217
    Abstract: A process for producing a 2-fluoro-3-oxoalkylcarboxylic acid ester by fluorinating 3-oxoalkylcarboxylic acid ester with a fluorine gas is provided. The process is characterized in that the concentration of 3-oxoalkylcarboxylic acid ester in the reaction mixture for fluorination is maintained at 3 wt % or higher. Also provided is a process for purifying 2-fluoro-3-oxoalkylcarboxylic acid ester characterized in that 2-fluoro-3-oxoalkylcarboxylic acid ester is produced at high yield and with less impurities by washing fluorinated 3-oxoalkylcarboxylic acid ester with 3 or more times as much water as the amount of reaction mixture. According to the processes of the present invention, not only is the generation of unwanted by-products minimized, but fluorinated 3-oxoalkylcarboxylic acid ester can be purified in an efficient manner.
    Type: Application
    Filed: June 26, 2003
    Publication date: March 18, 2004
    Inventors: Norihisa Kondo, Hideyuki Mimura, Kazunori Nukui, Kosuke Kawada, Shoji Arai
  • Patent number: 5501262
    Abstract: A cord locking assembly mounted in the blind head box or the blind hand grip axially movably fitted on the hollow pole suspended from the blind head box.The assembly comprises a movable plug, a fixed plug hole sleeve for fitting engagement with the plug, a lock compression spring to bias the plug to the plug hole sleeve, lift cords passing through the plug hole sleeve, and means for loosening the lock compression spring. The means is the hand grip in the case of the assembly mounted the hand grip. The means is a knob or pull cord fixed to a holder in which the lock compression spring is mounted in the case the assembly mounted in the blind head box.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: March 26, 1996
    Assignee: Toso Co., Ltd.
    Inventors: Tadashi Inaba, Toshiyuki Mori, Masahiro Nagashima, Kosuke Kawada
  • Patent number: 4996320
    Abstract: A pyridine-compound is reacted with fluorine together with a Bronsted acid-compound or Lewis acid to form a N-fluoropyridinium salt which is very active to other compounds but is very selective for the preparation of a desired product and this product is very useful for a fluorine-introducing agent which makes it useful for the preparation of fluoro-compounds such as thyroid inhibitor.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 26, 1991
    Assignee: Sagami Chemical Research Center
    Inventors: Teruo Umemoto, Kyoichi Tomita, Kosuke Kawada, Ginjiro Tomizawa
  • Patent number: RE35177
    Abstract: A pyridine-compound is reacted with fluorine together with a .[.Bronsted.]. .Iadd.Bronsted .Iaddend.acid-compound or Lewis acid to form a N-fluoropyridinium salt which is very active to other compounds but is very selective for the preparation of a desired product and this product is very useful for a fluorine-introducing agent which makes it useful for the preparation of fluoro-compounds such as thyroid inhibitor.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: March 12, 1996
    Assignees: Sagami Chemical Research Center, Chichibu Onoda Cement Corporation
    Inventors: Teruo Umemoto, Kyoichi Tomita, Kosuke Kawada, Ginjiro Tomizawa