Patents by Inventor Koji Hagiya

Koji Hagiya 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).

  • Publication number: 20090227810
    Abstract: A method for producing tetrafluoroterephthalic acid difluoride comprising reacting tetrachloroterephthalic acid dichloride with potassium fluoride in the presence of dimethyl sulfone.
    Type: Application
    Filed: November 21, 2006
    Publication date: September 10, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Publication number: 20090216017
    Abstract: A process for producing a biaryl compound, characterized by reacting an arylhydrazine compound, hydrogen peroxide and an aryl compound. When the reaction is conducted in the presence of a given metal or a compound of the metal or in the presence of a metal oxide obtained by reacting the given metal or a compound of the metal with hydrogen peroxide, then the yield of the biaryl compound is improved.
    Type: Application
    Filed: May 1, 2009
    Publication date: August 27, 2009
    Inventor: Koji HAGIYA
  • Patent number: 7569703
    Abstract: A method for producing a fluorine-containing organic compound represented by the formula (7): R—Fm??(7) wherein R represents a substituted or unsubstituted saturated hydrocarbon group, or a substituted or unsubstituted aromatic group and m represents an integer satisfying the inequality: 1?m?n, which comprises reacting a fluorinating agent represented by the formula (1): wherein R1 and R3 are the same or different, and represent an optionally substituted alkyl group, R2, R4 and R5 are the same or different, and represent a hydrogen atom or an optionally substituted alkyl group, x satisfies 0<x?1, and Y? represents a monovalent anion other than a fluoride ion, with an organic compound of the formula (6): R-Ln??(6) wherein R is the same as defined above, L represents a leaving group and n represents an integer of 1 or more, and a fluorinating agent using the same are described.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: August 4, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Publication number: 20090192328
    Abstract: A process for producing a 2-hydroxy-4-(methylthio)butyrate compound represented by the formula (2): wherein A is a hydrogen atom or a group represented by R—CH2—, wherein R is a hydrogen atom or an alkyl group, which comprises the step of: reacting 4-(methylthio)-2-oxo-1-butanol with oxygen and a compound represented by the formula (1): A-OH??(1) wherein A is as defined above, in the presence of a copper compound.
    Type: Application
    Filed: July 20, 2007
    Publication date: July 30, 2009
    Inventor: Koji Hagiya
  • Patent number: 7554000
    Abstract: A process for producing a biaryl compound, characterized by reacting an arylhydrazine compound, hydrogen peroxide and an aryl compound. When the reaction is conducted in the presence of a given metal or a compound of the metal or in the presence of a metal oxide obtained by reacting the given metal or a compound of the metal with hydrogen peroxide, then the yield of the biaryl compound is improved.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: June 30, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Publication number: 20090148362
    Abstract: A method for recovering tungsten from a reaction mixture obtained by reacting an organic compound with hydrogen peroxide in the presence of a tungsten catalyst comprising blowing a gas into the reaction mixture to precipitate tungstic acid (WO3.H2O) and separating tungstic acid precipitated.
    Type: Application
    Filed: September 20, 2006
    Publication date: June 11, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Publication number: 20090099387
    Abstract: A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion.
    Type: Application
    Filed: April 26, 2007
    Publication date: April 16, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koji Hagiya, Kazuaki Sasaki
  • Publication number: 20090053781
    Abstract: A method for producing 2-hydroxy-4-(methylthio)butyric acid which comprises the following steps (A), (B) and (C): Step (A): step of reacting 1,2-epoxy-3-butene with water to obtain 3-butene-1,2-diol, Step (B): step of reacting 3-butene-1,2-diol with methanethiol to obtain 4-(methylthio)butane-1,2-diol, Step (C): step of oxidizing 4-(methylthio)butane-1,2-diol to obtain 2-hydroxy-4-(methylthio)butyric acid.
    Type: Application
    Filed: October 13, 2005
    Publication date: February 26, 2009
    Inventors: Koji Hagiya, Hiroyuki Asako
  • Patent number: 7491845
    Abstract: It is provided to a process for producing adipic acid which comprises making a wastewater containing hydroxycaproic acid and discharged from the step of oxidizing cyclohexane with molecular oxygen in a liquid phase react with hydrogen peroxide in the presence of a tungsten catalyst in the pH range of 0 to 6.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: February 17, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masaji Hirota, Koji Hagiya
  • Patent number: 7485757
    Abstract: A method for producing 4-(methylthio)butane-1,2-diol which comprises reacting 3-butene-1,2-diol with methanethiol in the presence of an azo compound such as an azonitrile compound, an azoester compound, an azoamidine compound and an azoimidazoline compound.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: February 3, 2009
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Patent number: 7459588
    Abstract: A method for producing an unsaturated vicinal diol compound represented by the formula (2): wherein R1, R2, R3, R4, R5 and R are the same or different and each independently represent a hydrogen atom; a C1-C20 alkyl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C2-C7 alkoxycabonyl group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; or a C6-C10 aryl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; which comprises reacting an unsaturated epoxy compound represented by the formula (1): wherein R1, R2, R3, R4, R5 and R6 are the same as defined above, with water in the presence of a silicate containing at least one element selected from a group 5 element and a group 6 element of the long periodic table as a constituent.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: December 2, 2008
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Patent number: 7393971
    Abstract: A method for producing 3,3-dimethyl-2-(1-propenyl)cyclopropanecarboxylate represented by the formula (2): wherein R1 represent an optionally substituted alkyl group, an optionally substituted aryl group or an optionally substituted aralkyl group, which comprises a 3,3-dimethyl-2-(2-carboxy-1-propenyl)cyclopropanecarboxylate represented by the formula (1): wherein R1 is as described above, is brought into contact with a copper compound and a nitrogen-containing aromatic compound, is provided.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: July 1, 2008
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Publication number: 20080124773
    Abstract: A process for producing a sulfur-containing ?-hydroxycarboxylic acid compound, which comprises a step for reacting a sulfur-containing dihydroxy compound with a cell or a material from treated cell of a microorganism that has an ability to convert the sulfur-containing dihydroxy compound to a corresponding ?-hydroxycarboxylic acid compound.
    Type: Application
    Filed: September 2, 2005
    Publication date: May 29, 2008
    Applicant: Sumitomo Chemical Co., Ltd.
    Inventors: Hiroyuki Asako, Koji Hagiya
  • Publication number: 20080114185
    Abstract: A method for producing an unsaturated vicinal diol compound represented by the formula (2): wherein R1, R2, R3, R4, R5 and R are the same or different and each independently represent a hydrogen atom; a C1-C20 alkyl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C2-C7 alkoxycabonyl group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; or a C6-C10 aryl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; which comprises reacting an unsaturated epoxy compound represented by the formula (1): wherein R1, R2, R3, R4, R5 and R6 are the same as defined above, with water in the presence of a silicate containing at least one element selected from a group 5 element and a group 6 element of the long periodic table as a constituent.
    Type: Application
    Filed: September 9, 2005
    Publication date: May 15, 2008
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Publication number: 20080064898
    Abstract: An oxidation catalyst composition is obtained by mixing a selenium compound, a nitrogen-containing aromatic compound and an acid, and if necessary, in the presence of a solvent. The oxidation catalyst composition shows an oxidation catalyst activity in the oxidation reaction of an organic compound. For example, at least one oxygen-containing compound selected from an alcohol compound, an aldehyde compound, a ketone compound and a carboxylic acid compound is obtained by reacting the olefin compound having two or more hydrogen atoms on the carbon atom at ?-position of a carbon-carbon double bond with an organic hydroperoxide compound in the presence of the oxidation catalyst composition.
    Type: Application
    Filed: July 15, 2005
    Publication date: March 13, 2008
    Inventor: Koji Hagiya
  • Publication number: 20080039653
    Abstract: It is provided to a process for producing adipic acid which comprises making a wastewater containing hydroxycaproic acid and discharged from the step of oxidizing cyclohexane with molecular oxygen in a liquid phase react with hydrogen peroxide in the presence of a tungsten catalyst in the pH range of 0 to 6.
    Type: Application
    Filed: May 18, 2004
    Publication date: February 14, 2008
    Inventors: Masaji Hirota, Koji Hagiya
  • Patent number: 7304185
    Abstract: There is provided a process for the production of carbonyl compounds, characterized by reacting a diol represented by the formula (1); wherein R1, R2, R3 and R4 are the same or different, and independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryloxycarbonyl group, a substituted or unsubstituted aralkyloxycarbonyl group, carboxyl group or a hydrogen atom, or R1 and R2 or R3 and R4 are bonded together with the carbon atoms to which they are bonded to form a ring, provided that all of R1, R2, R3 and R4 are not hydrogen atoms simultaneously; with bromine or an inorganic bromine compound in the presence of a trivalent bismuth compound and a base to form carbonyl compounds represented by the formula (2); wherein R1 and R3 are as defined above; and the formula (3); wherein
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: December 4, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Naoyuki Takano, Koji Hagiya
  • Publication number: 20070265474
    Abstract: A method for producing 4-(methylthio)butane-1,2-diol which comprises reacting 3-butene-1,2-diol with methanethiol in the presence of an azo compound such as an azonitrile compound, an azoester compound, an azoamidine compound and an azoimidazoline compound.
    Type: Application
    Filed: September 9, 2005
    Publication date: November 15, 2007
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Koji Hagiya
  • Patent number: 7276622
    Abstract: It is provided that a method for producing an oxygen-containing compound, characterized in that an olefin compound having a carbon-carbon double bond which is bonded to a methyl or methylene group is reacted with an organic hydroperoxide in the presence of an ionic liquid and a selenium compound.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: October 2, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Publication number: 20070213570
    Abstract: A method for producing a halogen-substituted benzenedimethanol represented by the formula (2): wherein X1 to X4 are the same or different and independently represent a halogen atom or the like, provided that at least one of X1 to X4 is a halogen atom, by reacting a halogen-substituted terephthalic acid diester represented by the formula (1): wherein R1 and R2 are the same or different and independently represent a C1-C20 alkyl group which may have a substitutent or substituents, and X1 to X4 is the same as defined above, with a borohydride compound in the presence of an alcohol which comprises adding the alcohol into a mixture of the halogen-substituted terephthalic acid diester represented by the formula (1), the borohydride compound and a solvent.
    Type: Application
    Filed: August 2, 2005
    Publication date: September 13, 2007
    Applicant: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya