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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Publication number: 20120070669Abstract: 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: ApplicationFiled: June 2, 2010Publication date: March 22, 2012Applicant: STELLA CHEMIFA CORPORATIONInventors: Shinji Hashiguchi, Terunori Yamaguchi, Kazutaka Hirano
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Publication number: 20120021195Abstract: An optical member produced from a ceramic in which transparency in each wavelength region can be selectively improved, and a process for producing the optical member. The optical member is obtained by bringing a treatment gas comprising a fluorine atom into contact with an optical material comprising a specific ceramic under conditions according to the specific ceramic to thereby from a fluorinated film capable of improving the transmittance of light having wavelengths in a specific region, on at least some of the surface of the optical material.Type: ApplicationFiled: March 23, 2010Publication date: January 26, 2012Applicant: STELLA CHEMIFA CORPORATIONInventors: Shinji Hashiguchi, Kazutaka Hirano, Akira Mori
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Publication number: 20110286905Abstract: 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: ApplicationFiled: August 11, 2008Publication date: November 24, 2011Applicant: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Shinji Hashiguchi, Kazutaka Hirano
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Publication number: 20110253945Abstract: 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: ApplicationFiled: December 18, 2009Publication date: October 20, 2011Applicants: STELLA CHEMIFA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITYInventors: Kazuyuki Tohji, Yoshinori Sato, Shinji Hashiguchi, Kazutaka Hirano
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Patent number: 8029689Abstract: A process for preparing a high-purity quaternary ammonium salt comprising: (1) adding an oxide or hydroxide of a Group 1, 2, 12 or 13 metal to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the metal oxide or hydroxide to convert the acid salt to a tertiary amine and water and to convert the metal oxide or hydroxide to a metal salt at the same time, and (2) removing the tertiary amine, water and metal salt produced from the system.Type: GrantFiled: September 18, 2007Date of Patent: October 4, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Patent number: 8029690Abstract: A process for preparing a highly pure quaternary ammonium salt comprising: (1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and (2) removing the tertiary amine and water produced from the system.Type: GrantFiled: September 19, 2007Date of Patent: October 4, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Publication number: 20110189538Abstract: 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: ApplicationFiled: August 4, 2009Publication date: August 4, 2011Applicant: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Publication number: 20110135555Abstract: 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: ApplicationFiled: June 8, 2009Publication date: June 9, 2011Applicant: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Publication number: 20110123873Abstract: 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: November 9, 2010Publication date: May 26, 2011Inventors: Tetsuo Nishida, Yasutaka Tashiro, Megumi Tomisaki, Masashi Yamamoto, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda, Kenji Sato, Takashi Higono
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Publication number: 20110097626Abstract: 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: ApplicationFiled: August 4, 2009Publication date: April 28, 2011Applicant: STELLA CHEMIFA CORPORATIONInventors: Masahide Waki, Tatsuhiro Yabune, Kazuhiro Miyamoto, Kazutaka Hirano
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Patent number: 7875732Abstract: A quaternary ammonium salt of the formula (1) wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is CF3CO2?, CF3SO3BF3?, ClBF3?, AlF4—, CF3BF3?, C2F5BF3—, N(SO2F)2?, PF6?, AsF6— or SbF6?.Type: GrantFiled: January 12, 2006Date of Patent: January 25, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Yasutaka Tashiro, Hitoshi Tsurumaru, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Patent number: 7854854Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is N(CN)2?, SCN?, NO3?, NCO? or NO2?.Type: GrantFiled: January 12, 2006Date of Patent: December 21, 2010Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Patent number: 7834197Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is methyl or ethyl, and X? is a fluorine-containing anion.Type: GrantFiled: June 30, 2004Date of Patent: November 16, 2010Assignees: 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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Patent number: 7700243Abstract: An electrolytic solution for use in nonaqueous electrolytic lithium secondary cells which contains a room temperature molten salt, i.e., an aliphatic quaternary ammonium salt of the formula (1), an organic solvent and a lithium salt of the formula (2), the electrolytic solution being characterized in that the organic solvent contains vinylene carbonate in an amount of 1 to 5 wt. % based on the electrolytic solution, and a lithium secondary cell using the electrolytic solution wherein R1 to R3 are each a chain hydrocarbon having 1 to 4 carbon atoms, R4 is methoxymethyl, ethoxymethyl, propoxymethyl or isopropoxymethyl, and X1 and X2 are each a fluorine-containing anion.Type: GrantFiled: November 2, 2004Date of Patent: April 20, 2010Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Megumi Tomisaki, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda
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Publication number: 20100044617Abstract: A process for preparing a high-purity quaternary ammonium salt comprising: (1) adding an oxide or hydroxide of a Group 1, 2, 12 or 13 metal to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the metal oxide or hydroxide to convert the acid salt to a tertiary amine and water and to convert the metal oxide or hydroxide to a metal salt at the same time, and (2) removing the tertiary amine, water and metal salt produced from the system.Type: ApplicationFiled: September 18, 2007Publication date: February 25, 2010Inventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Publication number: 20100038578Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is N(CN)2?, SCN?, NO3?, NCO? or NO2?.Type: ApplicationFiled: January 12, 2006Publication date: February 18, 2010Inventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Publication number: 20090272933Abstract: A process for preparing a highly pure quaternary ammonium salt comprising: (1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and (2) removing the tertiary amine and water produced from the system.Type: ApplicationFiled: September 19, 2007Publication date: November 5, 2009Inventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Publication number: 20080050657Abstract: A quaternary ammonium salt of the formula (1) wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is CF3CO2?, CF3SO3BF3?, ClBF3?, AlF4?, CF3BF3?, C2F5BF3?, N(SO2F)2?, PF6?, AsF6? or SbF6?.Type: ApplicationFiled: January 12, 2006Publication date: February 28, 2008Inventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Yasutaka Tashiro, Hitoshi Tsurumaru, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Publication number: 20070042271Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is methyl or ethyl, and X? is a fluorine-containing anion.Type: ApplicationFiled: June 30, 2004Publication date: February 22, 2007Inventors: Tetsuo Nishida, Yasutaka Tashiro, Megumi Tomisaki, Masashi Yamamoto, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda, Kenji Sato, Takasbi Higono
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Publication number: 20070037064Abstract: An electrolytic solution for use in nonaqueous electrolytic lithium secondary cells which contains a room temperature molten salt, i.e., an aliphatic quaternary ammonium salt of the formula (1), an organic solvent and a lithium salt of the formula (2), the electrolytic solution being characterized in that the organic solvent contains vinylene carbonate in an amount of 1 to 5 wt. % based on the electrolytic solution, and a lithium secondary cell using the electrolytic solution wherein R1 to R3 are each a chain hydrocarbon having 1 to 4 carbon atoms, R4 is methoxymethyl, ethoxymethyl, propoxymethyl or isopropoxymethyl, and X1 and X2 are each a fluorine-containing anion.Type: ApplicationFiled: November 2, 2004Publication date: February 15, 2007Inventors: Tetsuo Nishida, Megumi Tomisaki, Kazutaka Hirano, Akihiro Nabeshima, Hiroaki Tokuda