Patents by Inventor Norioki Mine
Norioki Mine 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: 6992196Abstract: Refined ethylene sulfite exhibits an excellent storage stability when used as a constituent of an electrolyte. A method of producing same has a step of reacting ethylene glycol and thionyl chloride to producing raw ethylene sulfite, a rectifying step for rectifying the raw ethylene sulfite, and a refining process for refining the raw ethylene sulfite or the rectified ethylene sulfite conducted before or after the rectifying step. The refining process is at least one process selected from the group consisting of a washing process, a dehydration process by total reflux distillation, a second rectifying process, and an absorbing process. Refined ethylene sulfite produced according to the method contains chloroethanol in an amount of not more than 1000 ppm.Type: GrantFiled: August 26, 2002Date of Patent: January 31, 2006Assignee: Mitsubishi Chemical CorporationInventors: Toshimitsu Kato, Norioki Mine, Minoru Kotato
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Publication number: 20050181286Abstract: An electrolyte for a lithium battery contains ethylene sulfite, which includes chloroethanol in an amount of not more than 1000 ppm. A lithium battery includes an electrolyte, which contains chloroethanol in an amount of not more than 1000 ppm.Type: ApplicationFiled: April 5, 2005Publication date: August 18, 2005Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Toshimitsu Kato, Norioki Mine, Minoru Kotato
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Publication number: 20050171378Abstract: Refined ethylene sulfite exhibits excellent storage stability when used as a constituent of an electrolyte. Ethylene sulfite is formed by a step of reacting ethylene glycol and thionyl chloride to producing raw ethylene sulfite, a rectifying step for rectifying the raw ethylene sulfite, and a refining process for refining the raw ethylene sulfite or the rectified ethylene sulfite conducted before or after the rectifying step. The refining process is at least one process selected from the group consisting of a washing process, a dehydration process by total reflux distillation, a second rectifying process, and an absorbing process. Refined ethylene sulfite contains chloroethanol in an amount of not more than 1000 ppm.Type: ApplicationFiled: April 5, 2005Publication date: August 4, 2005Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Toshimitsu Kato, Norioki Mine, Minoru Kotato
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Publication number: 20030049542Abstract: Refined ethylene sulfite exhibits an excellent storage stability when used as a constituent of an electrolyte. A method of producing same has a step of reacting ethylene glycol and thionyl chloride to producing raw ethylene sulfite, a rectifying step for rectifying the raw ethylene sulfite, and a refining process for refining the raw ethylene sulfite or the rectified ethylene sulfite conducted before or after the rectifying step. The refining process is at least one process selected from the group consisting of a washing process, a dehydration process by total reflux distillation, a second rectifying process, and an absorbing process. Refined ethylene sulfite produced according to the method contains chloroethanol in an amount of not more than 1000 ppm.Type: ApplicationFiled: August 26, 2002Publication date: March 13, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Toshimitsu Kato, Norioki Mine, Minoru Kotato
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Patent number: 6025520Abstract: A method for preparing a (meth)acrylic acid ester, which comprises reacting (meth)acrylic acid with a C.sub.1-3 alcohol in the presence of a strongly acidic ion exchange resin as a catalyst, wherein the reaction is carried out under reduced pressure while the molar ratio of the alcohol to the (meth)acrylic acid is adjusted to be less than 1, whereby it is possible not only to improve the esterification yield by one pass but also to reduce the amount of a by-product alkoxypropionate which is problematic in the purification system.Type: GrantFiled: November 16, 1998Date of Patent: February 15, 2000Assignee: Mitsubishi Chemical CorporationInventors: Yoshiro Suzuki, Masahiko Yamagishi, Chikara Sugimoto, Norioki Mine
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Patent number: 5866713Abstract: A method for preparing a (meth)acrylic acid ester, which comprises reacting (meth)acrylic acid with a C.sub.1-3 alcohol in the presence of a strongly acidic ion exchange resin as a catalyst, wherein the reaction is carried out under reduced pressure while the molar ratio of the alcohol to the (meth)acrylic acid is adjusted to be less than 1, whereby it is possible not only to improve the esterification yield by one pass but also to reduce the amount of a by-product alkoxypropionate which is problematic in the purification system.Type: GrantFiled: August 13, 1997Date of Patent: February 2, 1999Assignee: Mitsubishi Chemical CorporationInventors: Yoshiro Suzuki, Masahiko Yamagishi, Chikara Sugimoto, Norioki Mine
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Patent number: 5856562Abstract: In a method for inhibiting the polymerization of (meth)acrylic acid or esters thereof, the improvement comprising using as a polymerization inhibitor a N-oxyl compound represented by the general formula (1): ##STR1## wherein X represents CH.sub.2, CHOH, C=O, CHCOCH.sub.3 or CHNHCOCH.sub.2, in combination with phosphine compound or a cobalt compound.Type: GrantFiled: May 27, 1997Date of Patent: January 5, 1999Assignee: Mitsubishi Chemical CorporationInventors: Norioki Mine, Tooru Segi
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Patent number: 5741681Abstract: L-aspartic acid is produced by repeating the following respective steps:(1) a reaction step of producing ammonium L-aspartate from an aqueous solution containing monoammonium maleate in accordance with an isomerization reaction and an enzyme reaction caused by aspartase in the presence of ammonia;(2) an ammonia-eliminating step of converting substantially all produced ammonium L-aspartate into monoammonium salt by distilling or stripping a reaction solution obtained in the step (1);(3) a crystallization step of crystallizing L-aspartic acid and producing monoammonium maleate from a solution obtained in the step (2) by adding maleic acid, maleic anhydride or both;(4) a solid-liquid separation step of separating L-aspartic acid crystals precipitated in the step (3) from a mother liquor containing monoammonium maleate; and(5) a recycle step of supplying the mother liquor containing monoammonium maleate obtained in the step (4) to the step (1) to be used as a raw material for the reaction.Type: GrantFiled: August 8, 1996Date of Patent: April 21, 1998Assignee: Mitsubishi Chemical CorporationInventors: Naoki Kato, Yoshiaki Mori, Norioki Mine, Seishi Fujii, Naoyuki Watanabe
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Patent number: 5449820Abstract: The present invention provides a method of preparing high purity 2,6-naphthalene dicarboxylic acid in which the contents of coloring substances, heavy metal and bromine compounds can be reduced by dissolving coarse crystals of 2,6-naphthalene dicarboxylic acid containing impurities in supercritical or subcritical water containing an entrainer composed of an organic solvent containing oxygen and having a specific solubility parameter, and by cooling an obtained solution to cause crystals to precipitate so as to separate the crystals from mother liquor.Type: GrantFiled: December 23, 1994Date of Patent: September 12, 1995Assignee: Mitsubishi Chemical CorporationInventors: Yoshio Fukui, Tatsuto Yoshioka, Chikara Sugimoto, Manabu Okuyama, Norioki Mine, Masahiko Yamagishi
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Patent number: 5324868Abstract: 4,4'-Biphenol is prepared through debutylation of 3,3', 5,5'-tetra-tert-butyl-4,4'-biphenol in an organic solvent in the presence of an acid catalyst wherein the debutylation is carried out continuously using at least two reactors aligned in series, with a high yield and high purity on an industrial level.Type: GrantFiled: May 24, 1993Date of Patent: June 28, 1994Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Masashi Inaba, Norioki Mine, Mamoru Mizutani
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Patent number: 5097080Abstract: A process for preparing 4,4'-dihydroxybiphenyl is disclosed, which comprises debutylation of 3,3', 5,5'-tetra-t-butyl-4,4'-dihydroxybiphenyl in an organic solvent in the presence of an acid catalyst, wherein said debutylation is carried out in the presence of water and/or a lower alcohol. The desired product can be obtained at a high purity in a high yield.Type: GrantFiled: December 10, 1990Date of Patent: March 17, 1992Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Masashi Inaba, Norioki Mine, Mamoru Mizutani