Patents by Inventor Kazutaka Hirano
Kazutaka Hirano 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).
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Patent number: 11964871Abstract: To provide a novel immobilized product in which a carbon material and/or a silicon material is/are immobilized on a base material surface by a chemical bond via a linking group, and a method for producing the same. The immobilized product is an immobilized product in which a carbon material is immobilizing on a surface of a base material, wherein the carbon material is chemically bonded on the surface of the base material via a linking group, and the linking group is at least one selected from the group consisting of a —NH group, a —NH—R1—NH group, a —SO group, a R2 group, a —O—R3—O group, and a R4 group (in which the R1 to R4 each independently represent at least one selected from the group consisting of a chain alkyl group, a cyclic alkyl group, a chain alkenyl group, a cyclic alkenyl group, a chain alkynyl group, etc.).Type: GrantFiled: April 20, 2017Date of Patent: April 23, 2024Assignee: STELLA CHEMIFA CORPORATIONInventors: Akira Ishimaru, Yoshinori Sato, Hironori Matsushita, Kazutaka Hirano, Tetsuo Nishida
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Patent number: 11155465Abstract: A cross-linked structure of a carbon material is excellent in mechanical strength, such as tensile strength. The carbon materials such as carbon nanotube, graphite, fullerene, and carbon nanocoil, are cross-linked with each other. The carbon materials are cross-linked through a linking group derived from a nucleophilic compound having two or more nucleophilic groups in the molecule.Type: GrantFiled: April 22, 2016Date of Patent: October 26, 2021Assignee: Stella Chemifa CorporationInventors: Yoshinori Sato, Kazutaka Hirano, Yuki Kikui
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Publication number: 20190322531Abstract: Disclosed is a carbon material, such as a carbon nanotube, into which a boron atom and/or a phosphorus atom is/are introduced while maintaining its characteristic structures and functions and a method for producing the same. The carbon material of the present invention is one in which a boron atom and/or a phosphorus atom is/are introduced into part of carbon atoms composing the carbon material, and can be produced by a method for producing a carbon material including the steps of: bringing a carbon material into contact with a fluorination treatment gas containing a fluorine-containing gas, thereby subjecting a surface of the carbon material to fluorination treatment; and bringing the carbon material after the fluorination treatment into contact with a boronization treatment gas containing a boron-containing gas, thereby subjecting to boronization treatment and/or into contact with a phosphorization treatment gas containing a phosphorus-containing gas, thereby subjecting to phosphorization treatment.Type: ApplicationFiled: June 9, 2017Publication date: October 24, 2019Inventors: Kazuyuki TOHJI, Yoshinori SATO, Koji YOKOYAMA, Kazutaka HIRANO, Yoshinori SATO
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Publication number: 20190112193Abstract: To provide a novel immobilized product in which a carbon material and/or a silicon material is/are immobilized on a base material surface by a chemical bond via a linking group, and a method for producing the same. The immobilized product is an immobilized product in which a carbon material is immobilizing on a surface of a base material, wherein the carbon material is chemically bonded on the surface of the base material via a linking group, and the linking group is at least one selected from the group consisting of a —NH group, a —NH—R1—NH group, a —SO group, a R2 group, a —O—R3—O group, and a R4 group (in which the R1 to R4 each independently represent at least one selected from the group consisting of a chain alkyl group, a cyclic alkyl group, a chain alkenyl group, a cyclic alkenyl group, a chain alkynyl group, etc.).Type: ApplicationFiled: April 20, 2017Publication date: April 18, 2019Inventors: Akira ISHIMARU, Yoshinori SATO, Hironori MATSUSHITA, Kazutaka HIRANO, Tetsuo NISHIDA
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Patent number: 10046971Abstract: A nitrogen-containing carbon material to the present invention comprises a carbon material having a carbon skeleton formed of carbon atoms and nitrogen atoms introduced into the carbon material, wherein part of carbon atoms in the carbon skeleton are substituted with nitrogen atoms. The nitrogen-containing carbon material according to the present invention can be produced by a production method including the steps of bringing the carbon material into contact with a first treatment gas containing a fluorine-containing gas to subject a surface of the carbon material to a fluorination treatment; and bringing the carbon material after being subjected to the fluorination treatment into contact with a second treatment gas containing a nitrogen-containing gas with heating to perform a nitriding treatment.Type: GrantFiled: December 16, 2015Date of Patent: August 14, 2018Assignees: Stella Chemifa Corporation, Tohoku UniversityInventors: Kazuyuki Tohji, Yoshinori Sato, Koji Yokoyama, Kazutaka Hirano, Yoshinori Sato
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Publication number: 20180072574Abstract: A cross-linked structure of a carbon material is excellent in mechanical strength, such as tensile strength. The carbon materials such as carbon nanotube, graphite, fullerene, and carbon nanocoil, are cross-linked with each other. The carbon materials are cross-linked through a linking group derived from a nucleophilic compound having two or more nucleophilic groups in the molecule.Type: ApplicationFiled: April 22, 2016Publication date: March 15, 2018Inventors: Yoshinori SATO, Kazutaka HIRANO, Yuki KIKUI
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Patent number: 9731968Abstract: Disclosed is a process for producing a fluoride gas that can produces fluoride gases such as BF3, SiF4, GeF4, PF5 or AsF5 at a reduced production cost in a simple manner. The process is characterized in that a compound containing an atom, which, together with a fluorine atom, can form a polyatomic ion, is added to a hydrogen fluoride solution to produce the polyatomic ion in a hydrogen fluoride solution and to evolve a fluoride gas comprising the fluorine atom and the atom that, together with the fluorine atom, can form a polyatomic ion.Type: GrantFiled: June 8, 2009Date of Patent: August 15, 2017Assignee: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Patent number: 9376323Abstract: An object of the invention is to provide a tetrafluoroborate producing method that allows high-yield, high-efficiency production of a tetrafluoroborate by a continuous process, a tetrafluoroborate-containing electrolyte, and an electrical storage device including such an electrolyte. The invention provides a method for producing a tetrafluoroborate, which includes: a first step including dissolving boron trifluoride gas in an organic solvent; a second step including adding, to the organic solvent, a fluoride (MFn, wherein M represents a metal or NH4, and 1?n?3) in an amount stoichiometrically equivalent to or less than the amount of the boron trifluoride so that a tetrafluoroborate solution is produced; and a third step including circulating the tetrafluoroborate solution through the first step so that the boron trifluoride gas is dissolved in the tetrafluoroborate solution instead of the organic solvent.Type: GrantFiled: June 19, 2009Date of Patent: June 28, 2016Assignee: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Kazuhiro Miyamoto, Kazutaka Hirano
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Publication number: 20160167968Abstract: A nitrogen-containing carbon material to the present invention comprises a carbon material having a carbon skeleton formed of carbon atoms and nitrogen atoms introduced into the carbon material, wherein part of carbon atoms in the carbon skeleton are substituted with nitrogen atoms. The nitrogen-containing carbon material according to the present invention can be produced by a production method including the steps of bringing the carbon material into contact with a first treatment gas containing a fluorine-containing gas to subject a surface of the carbon material to a fluorination treatment; and bringing the carbon material after being subjected to the fluorination treatment into contact with a second treatment gas containing a nitrogen-containing gas with heating to perform a nitriding treatment.Type: ApplicationFiled: December 16, 2015Publication date: June 16, 2016Inventors: Kazuyuki Tohji, Yoshinori Sato, Koji Yokoyama, Kazutaka Hirano, Yoshinori Sato
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Patent number: 9352511Abstract: An object of the invention is to provide a method for producing a laminated film comprising at least two resin films bonded together, which is capable of increasing the adhesiveness of the bonding surface and forming a laminated film with high reliability. The method for producing a laminated film according to the invention comprising at least two resin films laminated together, which comprises: a fluorination treatment step comprising bringing a fluorine and oxygen atoms-containing treatment gas into contact with at least a partial region of the surface of at least one of the two resin films to increase the adhesiveness of the region; and a bonding step comprising bonding the two resin films together using, as a bonding surface, the surface that has been brought into contact with the treatment gas.Type: GrantFiled: June 2, 2010Date of Patent: May 31, 2016Assignee: STELLA CHEMIFA CORPORATIONInventors: Shinji Hashiguchi, Terunori Yamaguchi, Kazutaka Hirano
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Patent number: 9296613Abstract: The invention is directed to a carbon material dispersion, including: a fluorinated carbon material having a fluorinated surface formed by bringing a treatment gas with a fluorine concentration of 0.01 to 100 vol % into contact with a carbon material under conditions at 150 to 600° C.; and a dispersion medium in which the fluorinated carbon material is dispersed.Type: GrantFiled: December 18, 2009Date of Patent: March 29, 2016Assignees: NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY, STELLA CHEMIFA CORPORATIONInventors: Kazuyuki Tohji, Yoshinori Sato, Shinji Hashiguchi, Kazutaka Hirano
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Patent number: 9059480Abstract: An object is to provide a method of manufacturing a hexafluorophosphate, that can simply and easily manufacture an inexpensive and high-quality hexafluorophosphate while suppressing the manufacturing cost, an electrolytic solution containing a hexafluorophosphate, and an electricity storage device including the electrolytic solution. The present invention relates to a method of manufacturing a hexafluorophosphate, which comprises reacting at least a phosphorus compound with a fluoride represented by MFs.r(HF) (wherein 0?r?6, 1?s?3, and M is at least one kind selected from the group consisting of Li, Na, K, Rb, Cs, NH4, Ag, Mg, Ca, Ba, Zn, Cu, Pb, Al and Fe) to produce a hexafluorophosphate represented by the chemical formula M(PF6)s.Type: GrantFiled: August 4, 2009Date of Patent: June 16, 2015Assignee: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Patent number: 9034290Abstract: An object the invention is to provide a phosphorus pentafluoride producing process wherein phosphorus pentafluoride is separated/extracted from a pentavalent phosphorus compound or a solution thereof, or a composition obtained by allowing the pentavalent phosphorus compound or the solution thereof to react with hydrogen fluoride, thereby producing phosphorus pentafluoride; and a phosphate hexafluoride producing process wherein the resultant phosphorus pentafluoride is used as raw material to produce a phosphate hexafluoride high in purity. The present invention relates to a process for producing phosphorus pentafluoride, wherein a carrier gas is brought into contact with either of the following one: a pentavalent phosphorus compound, a solution thereof, or a solution in which a composition obtained by allowing the pentavalent phosphorus compound or the solution thereof to react with hydrogen fluoride is dissolved, thereby a phosphorus pentafluoride is extracted into the career gas.Type: GrantFiled: August 11, 2008Date of Patent: May 19, 2015Assignee: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Shinji Hashiguchi, Kazutaka Hirano
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Surface-modified film, process for producing same, and laminated film and process for producing same
Patent number: 8926787Abstract: It is an object of the present invention to provide a surface-modified film which has adhesive properties improved by surface modification and a process for producing the same. It is also an object of the present invention to provide a laminated film in which at least the surface-modified film has been laminated and a process for producing the laminated film. The surface-modified film according to the present invention is characterized by being obtained by bringing a halide complex of an element in Group 13 of the periodic table into contact with at least a part of a region in the surfaces of a resin film.Type: GrantFiled: September 17, 2010Date of Patent: January 6, 2015Assignee: Stella Chemifa CorporationInventors: Shinji Hashiguchi, Kazutaka Hirano, Tomotsugu Fujimoto -
Patent number: 8747690Abstract: A quaternary ammonium salt of the formula (1), a composition containing the quaternary ammonium salt and an organic solvent, and an electrochemical device using the salt wherein R1 and R2 are both methyl and X? is BF4? or N(CF3SO2)2?.Type: GrantFiled: September 13, 2012Date of Patent: June 10, 2014Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Yasutaka Tashiro, Megumi Tornisaki, Masashi Yamamoto, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda, Kenji Sato, Takashi Higono
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Patent number: 8470278Abstract: A method of manufacturing phosphorus pentafluoride and hexafluorophosphate can suppress the manufacturing cost and also can manufacture high-quality phosphorus pentafluoride from an inexpensive and low-quality raw material. The raw material for the method can include at least a phosphorus atom and a fluorine atom. These are brought into contact with a carrier gas, and a phosphorus pentafluoride is extracted and separated into the carrier gas. A method of manufacturing hexafluorophosphate includes reacting fluoride with the resulting phosphorus pentafluoride according to the following chemical reaction scheme: sPF5+AFs?A(PF6)s, in which s is in the range of 1?s?3, and A is at least one of the following: Li, Na, K, Rb, Cs, NH4, Ag, Mg, Ca, Ba, Zn, Cu, Pb, Al and Fe.Type: GrantFiled: August 4, 2009Date of Patent: June 25, 2013Assignee: Stella Chemifa CorporationInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Patent number: 8366956Abstract: A quaternary ammonium salt of the formula (1), a composition containing the quaternary ammonium salt and an organic solvent, and an electrochemical device using the salt wherein R1 and R2 are both methyl and X? is BF4? or N(CF3SO2)2?.Type: GrantFiled: November 9, 2010Date of Patent: February 5, 2013Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Yasutaka Tashiro, Megumi Tomisaki, Masashi Yamamoto, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda, Kenji Sato, Takashi Higono
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Publication number: 20130004860Abstract: A quaternary ammonium salt of the formula (1), a composition containing the quaternary ammonium salt and an organic solvent, and an electrochemical device using the salt wherein R1 and R2 are both methyl and X? is BF4? or N(CF3SO2)2?.Type: ApplicationFiled: September 13, 2012Publication date: January 3, 2013Inventors: Tetsuo NISHIDA, Yasutaka Tashiro, Megumi Tornisaki, Masashi Yamamoto, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda, Kenji Sato, Takashi Higono
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SURFACE-MODIFIED FILM, PROCESS FOR PRODUCING SAME, AND LAMINATED FILM AND PROCESS FOR PRODUCING SAME
Publication number: 20120186650Abstract: It is an object of the present invention to provide a surface-modified film which has adhesive properties improved by surface modification and a process for producing the same. It is also an object of the present invention to provide a laminated film in which at least the surface-modified film has been laminated and a process for producing the laminated film. The surface-modified film according to the present invention is characterized by being obtained by bringing a halide complex of an element in Group 13 of the periodic table into contact with at least a part of a region in the surfaces of a resin film.Type: ApplicationFiled: September 17, 2010Publication date: July 26, 2012Applicant: STELLA CHEMIFA CORPORATIONInventors: Shinji Hashiguchi, Kazutaka Hirano, Tomotsugu Fujimoto -
Publication number: 20120082608Abstract: An object of the invention is to provide a tetrafluoroborate producing method that allows high-yield, high-efficiency production of a tetrafluoroborate by a continuous process, a tetrafluoroborate-containing electrolyte, and an electrical storage device including such an electrolyte. The invention provides a method for producing a tetrafluoroborate, which includes: a first step including dissolving boron trifluoride gas in an organic solvent; a second step including adding, to the organic solvent, a fluoride (MFn, wherein M represents a metal or NH4, and 1?n?3) in an amount stoichiometrically equivalent to or less than the amount of the boron trifluoride so that a tetrafluoroborate solution is produced; and a third step including circulating the tetrafluoroborate solution through the first step so that the boron trifluoride gas is dissolved in the tetrafluoroborate solution instead of the organic solvent.Type: ApplicationFiled: June 19, 2009Publication date: April 5, 2012Applicant: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Kazuhiro Miyamoto, Kazutaka Hirano