Patents by Inventor Hidekazu Miyagi
Hidekazu Miyagi 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: 20230378435Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: August 1, 2023Publication date: November 23, 2023Applicants: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato
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Patent number: 11090617Abstract: A porous support-zeolite membrane composite comprising an inorganic porous support and a zeolite membrane provided on, wherein the zeolite membrane contains a zeolite having a microporous structure of 8-membered oxygen ring or less, and a molar ratio of SiO2/Al2O3 in the zeolite membrane surface is larger by at least 20 than a molar ratio of SiO2/Al2O3 in the zeolite membrane itself, or a water adsorption of the porous support-zeolite membrane composite at a relative pressure of 0.8, as determined from a water vapor adsorption isotherm of the porous support-zeolite membrane composite, is at least 82% of a water adsorption of the porous support-zeolite membrane composite under the same condition as above after one-week immersion of the porous support-zeolite membrane composite in an aqueous 90 mass % acetic acid solution at room temperature.Type: GrantFiled: August 25, 2014Date of Patent: August 17, 2021Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Miki Yamada, Takahiko Takewaki, Mikio Hayashi, Naoko Fujita, Hidekazu Miyagi
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Publication number: 20210066707Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: September 11, 2020Publication date: March 4, 2021Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20190252672Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts, and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Publication number: 20170040593Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts; and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.Type: ApplicationFiled: October 12, 2016Publication date: February 9, 2017Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Publication number: 20150243936Abstract: A lithium secondary battery comprising a battery case and an electrode group is provided. The electrode group comprises a positive electrode, a negative electrode, a microporous film separator and a nonaqueous electrolyte comprising a lithium salt. The electrode group and the nonaqueous electrolyte are held in the battery case and the electrodes each comprise a current collector and an active-material layer containing an active material capable of occluding/releasing a lithium ion. The nonaqueous electrolyte comprises a difluorophosphoric acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. The battery case comprises a casing material in which at least part of the battery inner side comprises a sheet formed from a thermoplastic resin and with which the electrode group can be enclosed by placing the electrode group in the casing material and heat sealing layers of the thermoplastic resin to each other.Type: ApplicationFiled: March 17, 2015Publication date: August 27, 2015Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
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Patent number: 9112236Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: GrantFiled: October 19, 2006Date of Patent: August 18, 2015Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Patent number: 9029022Abstract: A lithium secondary battery is provided. The battery comprises: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound of formula (1), a fluorosilane compound of formula (2), a compound of formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte.Type: GrantFiled: September 13, 2012Date of Patent: May 12, 2015Assignee: Mitsubishi Chemical CorporationInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20140360939Abstract: A porous support-zeolite membrane composite comprising an inorganic porous support and a zeolite membrane provided on, wherein the zeolite membrane contains a zeolite having a microporous structure of 8-membered oxygen ring or less, and a molar ratio of SiO2/Al2O3 in the zeolite membrane surface is larger by at least 20 than a molar ratio of SiO2/Al2O3 in the zeolite membrane itself, or a water adsorption of the porous support-zeolite membrane composite at a relative pressure of 0.8, as determined from a water vapor adsorption isotherm of the porous support-zeolite membrane composite, is at least 82% of a water adsorption of the porous support-zeolite membrane composite under the same condition as above after one-week immersion of the porous support-zeolite membrane composite in an aqueous 90 mass % acetic acid solution at room temperature.Type: ApplicationFiled: August 25, 2014Publication date: December 11, 2014Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: MIKI YAMADA, Takahiko Takewaki, Mikio Hayashi, Naoko Fujita, Hidekazu Miyagi
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Publication number: 20130022861Abstract: A lithium secondary battery is provided. The battery comprises: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound of formula (1), a fluorosilane compound of formula (2), a compound of formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte.Type: ApplicationFiled: September 13, 2012Publication date: January 24, 2013Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Publication number: 20100015514Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.Type: ApplicationFiled: October 19, 2006Publication date: January 21, 2010Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu Miyagi, Ryoichi Kato, Masakazu Yokomizo, Hiroyuki Uono, Hitoshi Matsumoto, Tomohiro Satou, Minoru Kotato, Takayuki Nakajima, Hitoshi Suzuki, Hiroyuki Oshima
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Patent number: 6147265Abstract: A process for producing an alkylene glycol which comprises a step of reacting an alkylene oxide with water in the presence of a catalyst, wherein the catalyst comprises an anion-exchange resin comprising: a polymer of a vinylaromatic compound as a substrate; and quaternary ammoniums group each bonded to the respective aromatic groups of the polymer substrate via a connecting group having a chain length of three or more atoms.Type: GrantFiled: April 27, 1998Date of Patent: November 14, 2000Assignee: Mitsubishi Chemical CorporationInventors: Tomoatsu Iwakura, Hidekazu Miyagi
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Patent number: 5543547Abstract: The present invention relates to a method of producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen using as a catalyst a specified catalyst system containing palladium and cerium compounds. Specifically, the present invention relates to a method of producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen in the presence of a catalyst containing the following compounds:(A) at least one selected from palladium and palladium compounds;(B) at least one of trivalent or tetravalent cerium compounds;(C) at least one selected from quaternary ammonium salts and quaternary phosphonium salts;(D) at least one selected from quinones and reduction products thereof, i.e., aromatic diols; or(A) and (B) components of the above; and(E) at least one inorganic halide selected from alkali metal halides and alkali earth metal halides.Type: GrantFiled: February 3, 1995Date of Patent: August 6, 1996Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Iwane, Hidekazu Miyagi, Satoshi Imada, Shoichi Seo, Takahiro Yoneyama
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Patent number: 5498789Abstract: The present invention relates to a method of producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen using a catalyst system for suppressing the production of aryl aromatic o-hydroxycarboxylate as a by-product. The catalyst system consists of the following compounds:(A) at least one selected from palladium and palladium compounds;(B) at least one selected from lead compounds; and(C) at least one halide selected from quaternary ammonium halides and quaternary phosphonium halides; and if required,(D) at least one selected from copper and copper compounds.The method of the present invention can increase the yield of an aromatic carbonate per palladium (the turnover number of palladium).Type: GrantFiled: November 28, 1994Date of Patent: March 12, 1996Assignee: Mitsubishi Chemical CorporationInventors: Masatoshi Takagi, Hidekazu Miyagi, Yuji Ohgomori, Hiroshi Iwane