Patents by Inventor Shunsuke Mimura
Shunsuke Mimura 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: 20220384847Abstract: There is provided a method for producing lithium difluorophosphate in which difluorophosphate ester reacts with a lithium salt compound in a nonaqueous organic solvent without using water as a raw material, a method for producing a difluoro phosphate ester including a step of allowing a dihalophosphate ester to react with a fluorinating agent having a concentration of contained hydrogen fluoride of 15 mol % or less in a nonaqueous organic solvent; lithium difluorophosphate in which a value of a relational expression (d90-d10)/MV represented by d90 which is a particle size at which a volume cumulative distribution is 90%, d10 which is a particle size at which a volume cumulative distribution is 10%, and MV which is a volume average particle size is 10 or less; and methods for producing a nonaqueous electrolytic solution and a nonaqueous secondary battery using the production method described above.Type: ApplicationFiled: August 6, 2020Publication date: December 1, 2022Inventors: Mikihiro TAKAHASHI, Masutaka SHINMEN, Takayoshi MORINAKA, Masataka FUJIMOTO, Susumu IWASAKI, Keita NAKAHARA, Masahiro MIURA, Shunsuke MIMURA, Katsuya KUBO
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Patent number: 10793540Abstract: The present invention provides an industrially applicable method for production of a fluorine-containing cyclopropane carboxylic acid compound useful as an intermediate for pharmaceutical and agrichemical products. A fluorine-containing cyclopropane monoester is obtained by: forming a fluorine-containing cyclic sulfate with the use of a fluorine-containing diol compound and sulfuryl fluoride (as a cyclic sulfuric esterification step); reacting the fluorine-containing cyclic sulfate with a malonic diester, thereby forming a fluorine-containing cyclopropane diester (as a cyclopropanation step); and hydrolyzing the fluorine-containing cyclopropane diester (as a hydrolysis step).Type: GrantFiled: September 5, 2019Date of Patent: October 6, 2020Assignee: Central Glass Company, LimitedInventors: Takashi Kashiwaba, Takako Yamazaki, Shoko Ishii, Shunsuke Mimura, Masanori Fushimi, Ryuichi Okamoto, Haruki Kobayashi, Manabu Yasumoto
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Publication number: 20190389831Abstract: The present invention provides an industrially applicable method for production of a fluorine-containing cyclopropane carboxylic acid compound useful as an intermediate for pharmaceutical and agrichemical products. A fluorine-containing cyclopropane monoester is obtained by: forming a fluorine-containing cyclic sulfate with the use of a fluorine-containing diol compound and sulfuryl fluoride (as a cyclic sulfuric esterification step); reacting the fluorine-containing cyclic sulfate with a malonic diester, thereby forming a fluorine-containing cyclopropane diester (as a cyclopropanation step); and hydrolyzing the fluorine-containing cyclopropane diester (as a hydrolysis step).Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Inventors: Takashi KASHIWABA, Takako YAMAZAKI, Shoko ISHII, Shunsuke MIMURA, Masanori FUSHIMI, Ryuichi OKAMOTO, Haruki KOBAYASHI, Manabu YASUMOTO
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Patent number: 10450291Abstract: The present invention provides an industrially applicable method for production of a fluorine-containing cyclopropane carboxylic acid compound useful as an intermediate for pharmaceutical and agrichemical products. A fluorine-containing cyclopropane monoester is obtained by: forming a fluorine-containing cyclic sulfate with the use of a fluorine-containing dial compound and sulfuryl fluoride (as a cyclic sulfuric esterification step); reacting the fluorine-containing cyclic sulfate with a malonic diester, thereby forming a fluorine-containing cyclopropane diester (as a cyclopropanation step); and hydrolyzing the fluorine-containing cyclopropane diester (as a hydrolysis step).Type: GrantFiled: June 24, 2016Date of Patent: October 22, 2019Assignee: Central Glass Company, LimitedInventors: Takashi Kashiwaba, Takako Yamazaki, Shoko Ishii, Shunsuke Mimura, Masanori Fushimi, Ryuichi Okamoto, Haruki Kobayashi, Manabu Yasumoto
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Publication number: 20180186763Abstract: The present invention provides an industrially applicable method for production of a fluorine-containing cyclopropane carboxylic acid compound useful as an intermediate for pharmaceutical and agrichemical products. A fluorine-containing cyclopropane monoester is obtained by: forming a fluorine-containing cyclic sulfate with the use of a fluorine-containing dial compound and sulfuryl fluoride (as a cyclic sulfuric esterification step); reacting the fluorine-containing cyclic sulfate with a malonic diester, thereby forming a fluorine-containing cyclopropane diester (as a cyclopropanation step); and hydrolyzing the fluorine-containing cyclopropane diester (as a hydrolysis step).Type: ApplicationFiled: June 24, 2016Publication date: July 5, 2018Inventors: Takashi KASHIWABA, Takako YAMAZAKI, Shoko ISHII, Shunsuke MIMURA, Masanori FUSHIMI, Ryuichi OKAMOTO, Haruki KOBAYASHI, Manabu YASUMOTO
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Patent number: 9765004Abstract: A production method of ?,?-difluoroacetaldehyde according to the present invention includes reaction of an ?,?-difluoroacetic acid ester with hydrogen gas (H2) in the presence of a ruthenium catalyst. It is possible to selectively obtain ?,?-difluoroacetaldehyde as a partially reduced product of the hydrogenation reaction by the adoption of specific reaction conditions (in particular, reaction solvent and reaction temperature). This hydrogenation process can be alternative to the industrially unpractical hydride reduction process.Type: GrantFiled: August 3, 2016Date of Patent: September 19, 2017Assignee: Central Glass Company, LimitedInventors: Takashi Ootsuka, Mari Imamura, Akihiro Ishii, Koji Ueda, Shunsuke Mimura
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Publication number: 20160340284Abstract: A production method of ?,?-difluoroacetaldehyde according to the present invention includes reaction of an ?,?-difluoroacetic acid ester with hydrogen gas (H2) in the presence of a ruthenium catalyst. It is possible to selectively obtain ?,?-difluoroacetaldehyde as a partially reduced product of the hydrogenation reaction by the adoption of specific reaction conditions (in particular, reaction solvent and reaction temperature). This hydrogenation process can be alternative to the industrially unpractical hydride reduction process.Type: ApplicationFiled: August 3, 2016Publication date: November 24, 2016Inventors: Takashi OOTSUKA, Mari IMAMURA, Akihiro ISHII, Koji UEDA, Shunsuke MIMURA
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Patent number: 9440900Abstract: A production method of ?,?-difluoroacetaldehyde according to the present invention includes reaction of an ?,?-difluoroacetic acid ester with hydrogen gas (H2) in the presence of a ruthenium catalyst. It is possible to selectively obtain ?,?-difluoroacetaldehyde as a partially reduced product of the hydrogenation reaction by the adoption of specific reaction conditions (in particular, reaction solvent and reaction temperature). This hydrogenation process can be alternative to the industrially unpractical hydride reduction process.Type: GrantFiled: January 23, 2014Date of Patent: September 13, 2016Assignee: Central Glass Company, LimitedInventors: Takashi Ootsuka, Mari Imamura, Akihiro Ishii, Koji Ueda, Shunsuke Mimura
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Patent number: 9409843Abstract: A production method of a 1,1,1,5,5,5-hexafluoroacetylacetone hydrate according to the present invention includes: step 1: step 1: obtaining a reaction mixture that contains at least 1,1,1,5,5,5-hexafluoro-3-pentyn-2-one or an equivalent thereof by reaction of a 3,3,3-trifluoropropynyl metal with a trifluoroacetate; and step 2: forming the 1,1,1,5,5,5-hexafluoroacetylacetone hydrate by contact of the reaction mixture obtained in the step 1 with water in the presence of an acid. It is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone by dehydration of the thus-formed hydrate. Thus, the production method according to the present invention is industrially applicable.Type: GrantFiled: April 2, 2014Date of Patent: August 9, 2016Assignee: Central Glass Company, LimitedInventors: Takashi Ootsuka, Takashi Masuda, Akihiro Ishii, Mari Imamura, Shunsuke Mimura, Masato Kimura, Hiroshi Minesaki
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Publication number: 20160075626Abstract: A production method of a 1,1,1,5,5,5-hexafluoroacetylacetone hydrate according to the present invention includes: step 1: step 1: obtaining a reaction mixture that contains at least 1,1,1,5,5,5-hexafluoro-3-pentyn-2-one or an equivalent thereof by reaction of a 3,3,3-trifluoropropynyl metal with a trifluoroacetate; and step 2: forming the 1,1,1,5,5,5-hexafluoroacetylacetone hydrate by contact of the reaction mixture obtained in the step 1 with water in the presence of an acid. It is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone by dehydration of the thus-formed hydrate. Thus, the production method according to the present invention is industrially applicable.Type: ApplicationFiled: April 2, 2014Publication date: March 17, 2016Applicant: Central Glass Company LimitedInventors: Takashi OOTSUKA, Takashi MASUDA, Akihiro ISHII, Mari IMAMURA, Shunsuke MIMURA, Masato KIMURA, Hiroshi MINESAKI
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Publication number: 20150329455Abstract: A production method of ?,?-difluoroacetaldehyde according to the present invention includes reaction of an ?,?-difluoroacetic acid ester with hydrogen gas (H2) in the presence of a ruthenium catalyst. It is possible to selectively obtain ?,?-difluoroacetaldehyde as a partially reduced product of the hydrogenation reaction by the adoption of specific reaction conditions (in particular, reaction solvent and reaction temperature). This hydrogenation process can be alternative to the industrially unpractical hydride reduction process.Type: ApplicationFiled: January 23, 2014Publication date: November 19, 2015Applicant: CENTRAL GLASS COMPANY, LIMITEDInventors: Takashi OOTSUKA, Mari IMAMURA, Akihiro ISHII, Koji UEDA, Shunsuke MIMURA
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Patent number: 5322369Abstract: A dynamic pressure bearing is provided with a moving side bearing member and a fixed side bearing member so as to support a rotor for rotation by generating a fluid dynamic pressure between the moving side bearing member and the fixed side bearing member. The dynamic pressure bearing includes a high-frequency exciting device for applying a high-frequency vibration to the fixed side bearing member at the time of at least one of start-up and shutdown of the rotor. In this way, both bearing members are kept almost free from contact with each other and a frictional resistance at start-up and/or shutdown is minimized.Type: GrantFiled: April 21, 1993Date of Patent: June 21, 1994Assignee: Ebara CorporationInventors: Tadashi Kataoka, Shunsuke Mimura, Yoichi Kanemitsu, Yoshiyuki Maruta, Tatsuo Hinata, Mamoru Suzuki, Manabu Toshimitsu, Shunichi Aiyoshizawa