Patents by Inventor Masayuki Okajima
Masayuki Okajima 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: 20240105996Abstract: A non-aqueous electrolyte solution contains: as an electrolyte, LiN(FSO2)2; and as an additive, at least one selected from the group consisting of a boron atom-containing compound represented by the general formula (3): B(OR6)3, a carbon atom-containing compound represented by the general formula (4): C(?O)(R5)(OR6), a sulfur atom-containing compound represented by the general formula (5): {S(?O)2(R5)y}x(OR6)x(2-y), and a phosphorus atom-containing compound represented by the general formula (6): P(?O)(R5)y(OR6)2.Type: ApplicationFiled: November 13, 2023Publication date: March 28, 2024Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Hiroyuki MIZUNO, Ryo NISHIHATA, Masayuki OKAJIMA, Yutaro ITO, Toru ODANI
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Patent number: 11637320Abstract: An electrolytic solution comprising N-(fluorosulfonyl)-N-(fluoroalkylsulfonyl)imide or di(fluorosulfonyl)imide, from which a residual solvent that affects the properties of the electrolyte solution material is reduced, is provided. A method for producing an electrolyte solution material containing fluorosulfonyl imide salt represented by the following general formula (1) and an electrolyte solution preparation solvent comprises decompressing and/or heating a solution containing the fluorosulfonyl imide salt and the electrolyte solution preparation solvent to volatilize a production solvent for the fluorosulfonyl imide salt. In general formula (1), R1 represents a fluorine atom or a fluorinated alkyl group having 1 to 6 carbon atoms, R2 represents an alkali metal ion.Type: GrantFiled: October 5, 2015Date of Patent: April 25, 2023Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Yasunori Okumura, Shimpei Sato, Masayuki Okajima, Takayuki Kobatake, Hiromoto Katsuyama
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Patent number: 11539078Abstract: An electrolytic solution comprising N-(fluorosulfonyl)-N-(fluoroalkylsulfonyl)imide or di(fluorosulfonyl)imide, from which a residual solvent that affects the properties of the electrolyte solution material is reduced, is provided. A method for producing an electrolyte solution material containing fluorosulfonyl imide salt represented by the following general formula (1) and an electrolyte solution preparation solvent comprises decompressing and/or heating a solution containing the fluorosulfonyl imide salt and the electrolyte solution preparation solvent to volatilize a production solvent for the fluorosulfonyl imide salt. In general formula (1), R1 represents a fluorine atom or a fluorinated alkyl group having 1 to 6 carbon atoms, R2 represents an alkali metal ion.Type: GrantFiled: October 19, 2020Date of Patent: December 27, 2022Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Yasunori Okumura, Shimpei Sato, Masayuki Okajima, Takayuki Kobatake, Hiromoto Katsuyama
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Publication number: 20220153584Abstract: An aqueous solution containing an alkali metal bis(fluorosulfonyl)imide, in which a total content of the alkali metal bis(fluorosulfonyl)imide and water is 98 mass % or more with respect to a total amount of the aqueous solution, and a pH is ?3 to 10.Type: ApplicationFiled: March 17, 2020Publication date: May 19, 2022Applicant: Nippon Shokubai Co., Ltd.Inventors: Koji Shingubara, Yasunori Okumura, Masayuki Okajima, Naohiko Itayama, Yusuke Oyama
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Patent number: 10978740Abstract: The objective of the present invention is to provide an electrolyte solution of which electrolyte salt concentration is high and by which cycle characteristics hardly deteriorate and battery lifetime can be extended, and a lithium ion secondary battery which contains the above electrolyte solution. The electrolyte solution of the present invention comprises an electrolyte salt and a solvent, wherein a concentration of the electrolyte salt is more than 1.1 mol/L, the electrolyte salt contains a compound represented by the following formula (1): (XSO2) (FSO2)NLi (1) (wherein X is a fluorine atom, a C1-6 alkyl group or a C1-6 fluoroalkyl group), and the solvent contains a cyclic carbonate.Type: GrantFiled: February 18, 2014Date of Patent: April 13, 2021Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Hiroyuki Mizuno, Kazuhisa Hirata, Takeo Kawase, Izuho Okada, Hiromoto Katsuyama, Miwako Tominaga, Masayuki Okajima
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Publication number: 20210036371Abstract: An electrolytic solution comprising N-(fluorosulfonyl)-N-(fluoroalkylsulfonyl)imide or di(fluorosulfonyl)imide, from which a residual solvent that affects the properties of the electrolyte solution material is reduced, is provided. A method for producing an electrolyte solution material containing fluorosulfonyl imide salt represented by the following general formula (1) and an electrolyte solution preparation solvent comprises decompressing and/or heating a solution containing the fluorosulfonyl imide salt and the electrolyte solution preparation solvent to volatilize a production solvent for the fluorosulfonyl imide salt. In general formula (1), R1 represents a fluorine atom or a fluorinated alkyl group having 1 to 6 carbon atoms, R2 represents an alkali metal ion.Type: ApplicationFiled: October 19, 2020Publication date: February 4, 2021Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Yasunori OKUMURA, Shimpei SATO, Masayuki OKAJIMA, Takayuki KOBATAKE, Hiromoto KATSUYAMA
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Publication number: 20190152792Abstract: The present invention provides a method for producing a bis (fluorosulfonyl) imide alkali metal salt by a reaction of a mixture containing bis (fluorosulfonyl) imide and an alkali metal compound is provided. According to this method for producing a bis (fluorosulfonyl) imide alkali metal salt, a total of weight ratios of the bis (fluorosulfonyl) imide, the alkali metal compound and the bis (fluorosulfonyl) imide alkali metal salt to an entire reacted mixture is not less than 0.8, after the reaction.Type: ApplicationFiled: May 23, 2017Publication date: May 23, 2019Applicants: MORITA CHEMICAL INDUSTRIES CO., LTD., NIPPON SHOKUBAI CO., LTD.Inventors: Kenji Yamada, Hirotsugu Shimizu, Yasunori Okumura, Masayuki Okajima, Takeo Kawase, Hiromoto Katsuyama, Hiroyuki Mizuno, Yukihiro Fukata, Naohiko Itayama
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Publication number: 20170214092Abstract: An electrolytic solution comprising N-(fluorosulfonyl)-N-(fluoroalkylsulfonyl)imide or di(fluorosulfonyl)imide, from which a residual solvent that affects the properties of the electrolyte solution material is reduced, is provided. A method for producing an electrolyte solution material containing fluorosulfonyl imide salt represented by the following general formula (1) and an electrolyte solution preparation solvent comprises decompressing and/or heating a solution containing the fluorosulfonyl imide salt and the electrolyte solution preparation solvent to volatilize a production solvent for the fluorosulfonyl imide salt. In general formula (1), R1 represents a fluorine atom or a fluorinated alkyl group having 1 to 6 carbon atoms, R2 represents an alkali metal ion.Type: ApplicationFiled: October 5, 2015Publication date: July 27, 2017Applicant: NIPPON SHOKUBAI CO., LTD.Inventors: Yasunori OKUMURA, Shimpei SATO, Masayuki OKAJIMA, Takayuki KOBATAKE, Hiromoto KATSUYAMA
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Patent number: 9466431Abstract: The present invention provides an ionic compound containing a cyanoborate; a process for production thereof; and an electrolytic solution and a device. The electrolytic solution comprises an ionic compound represented by general formula (1) and a solvent, Mn+([B(CN)4-mYm]?)n??(1) wherein Mn+ represents an organic or inorganic cation having a valency of 1 to 3; Y represents a halogen, a hydrocarbon group which has a main chain having 1 to 10 carbon atoms and which may optionally contain a halogen, —C(O)R14, —S(O)lR14, —Z(R14)2, or —XR14; R14 represents H, a halogen, or an organic substituent group which has a main chain having 1 to 10 atoms; Z represents N or P; X represents O or S; R13 represents H, or an hydrocarbon group which has a main chain having 1 to 10 atoms; l represents an integer of 1 to 2; m and n represent an integer of 1 to 3 respectively.Type: GrantFiled: January 20, 2012Date of Patent: October 11, 2016Assignee: NIPPON SHOKUBAI CO., LTD.Inventors: Takayuki Kobatake, Masayuki Okajima, Taisuke Kasahara, Yasuyuki Miyoshi, Izuho Okada, Naohiko Itayama
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Publication number: 20150380768Abstract: The objective of the present invention is to provide an electrolyte solution of which electrolyte salt concentration is high and by which cycle characteristics hardly deteriorate and battery lifetime can be extended, and a lithium ion secondary battery which contains the above electrolyte solution. The electrolyte solution of the present invention comprises an electrolyte salt and a solvent, wherein a concentration of the electrolyte salt is more than 1.1 mol/L, the electrolyte salt contains a compound represented by the following formula (1): (XSO2) (FSO2)NLi (1) (wherein X is a fluorine atom, a C1-6 alkyl group or a C1-6 fluoroalkyl group), and the solvent contains a cyclic carbonate.Type: ApplicationFiled: February 18, 2014Publication date: December 31, 2015Inventors: Hiroyuki MIZUNO, Kazuhisa HIRATA, Takeo KAWASE, Izuho OKADA, Hiromoto KATSUYAMA, Miwako TOMINAGA, Masayuki OKAJIMA
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Publication number: 20130295449Abstract: The present invention provides an ionic compound containing a cyanoborate; a process for production thereof; and an electrolytic solution and a device, each utilizing the ionic compound. The electrolytic solution of the present invention comprises an ionic compound represented by general formula (1) and a solvent. Further, a production process of the present invention comprises reacting a compound represented by general formula (8) with a substitution reaction reagent to obtain a compound represented by general formula (1).Type: ApplicationFiled: January 20, 2012Publication date: November 7, 2013Inventors: Takayuki Kobatake, Masayuki Okajima, Taisuke Kasahara, Yasuyuki Miyoshi, Izuho Okada, Naohiko Itayama
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Patent number: 5469213Abstract: In the time-varying image signal coding apparatus, a local encoded signal is quantized by a quantizing circuit, and the quantized signal is selected when refreshing is to be accomplished, and subjected to code transform by a code transform circuit to be transmitted to a time-varying image signal decoding apparatus. The signal supplied from the quantizing circuit is a transform coefficient in the transform region, and this is divided into a plurality of groups to be refreshed on a group-by-group basis. The transfer control on a group-by-group basis when refreshing is to take place is accomplished with a control signal supplied from a switching control circuit, and this control signal also undergoes code transform by the code transform circuit to be transmitted to the time-varying image signal decoding apparatus.Type: GrantFiled: August 25, 1994Date of Patent: November 21, 1995Assignee: NEC CorporationInventors: Toshio Koga, Masayuki Okajima
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Patent number: 5424777Abstract: A time-varying image signal coding apparatus including a local encoded signal being quantized by a quantizing circuit, and the quantized signal is selected when refreshing is to be accomplished, and subjected to code transform by a code transform circuit to be transmitted to a time-varying image signal decoding apparatus. The signal supplied from the quantizing circuit is a transform coefficient in the transform region, and this is divided into a plurality of groups to be refreshed on a group-by-group basis. The transfer control on a group-by-group basis when refreshing is to take place is accomplished with a control signal supplied from a switching control circuit, and this control signal also undergoes code transform by the code transform circuit to be transmitted to the time-varying image signal decoding apparatus.Type: GrantFiled: August 25, 1994Date of Patent: June 13, 1995Assignee: NEC CorporationInventors: Toshio Koga, Masayuki Okajima
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Patent number: 5369437Abstract: In the time-varying image signal coding apparatus, a local encoded signal is quantized by a quantizing circuit, and the quantized signal is selected when refreshing is to be accomplished, and subjected to code transformation by a code transform circuit to be transmitted to a time-varying image signal decoding apparatus. The signal supplied from the quantizing circuit is a transform coefficient in the transform region, and this is divided into a plurality of groups to be refreshed on a group-by-group basis. The transfer control on a group-by-group basis when refreshing is to take place is accomplished with a control signal supplied from a switching control circuit, and this control signal also undergoes code transformation by the code transform circuit to be transmitted to the time-varying image signal decoding apparatus.Type: GrantFiled: August 28, 1992Date of Patent: November 29, 1994Assignee: NEC CorporationInventors: Toshio Koga, Masayuki Okajima
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Patent number: 5063443Abstract: In a predictive encoder device supplied with an input image signal divisible into odd and even number line signals, first and second predictive encoders (32, 37) individually carry out predictive encoding of the odd and the even number line signals into first and second encoded signals at a comparatively low speed by the use of first and second local decoded signals, respectively. The first and the second local decoded signals are supplied to the second and the first predictive encoders through delay circuits (42, 43), respectively, to predict a current picture element with reference to picture elements located on adjacent lines. Two delay circuits (36, 44) are connected to an output terminal (32c) of the first predictive encoder and to an input terminal (37a) of the second predictive encoder to adjust timings of the first and the second encoded signals. A predictive decoder device also comprises first and second predictive decoders (62, 83) corresponding to the first and the second predictive encoders.Type: GrantFiled: May 18, 1990Date of Patent: November 5, 1991Assignee: NEC CorporationInventors: Masayuki Okajima, Toru Shibuya