Patents by Inventor Hajime Komatsu

Hajime Komatsu 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).

  • Patent number: 10573891
    Abstract: The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: February 25, 2020
    Assignee: KURARAY CO., LTD.
    Inventors: Makoto Imaji, Kenta Aoki, Yasuhiro Tada, Naohiro Sonobe, Junichi Arima, Kenichi Koyakumaru, Hideharu Iwasaki, Kiyoto Otsuka, Jiro Masuko, Hajime Komatsu, Shinya Tago
  • Publication number: 20170125811
    Abstract: The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 4, 2017
    Applicants: KUREHA CORPORATION, KURARAY CO., LTD., KURARAY CHEMICAL CO., LTD.
    Inventors: Makoto IMAJI, Kenta AOKI, Yasuhiro TADA, Naohiro SONOBE, Junichi ARIMA, Kenichi KOYAKUMARU, Hideharu IWASAKI, Kiyoto OTSUKA, Jiro MASUKO, Hajime KOMATSU, Shinya TAGO
  • Patent number: 9508494
    Abstract: The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of lithium ion capacitors, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium and iron are sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of lithium ion capacitors. The object can be solved by a method for manufacturing a carbonaceous material having an average diameter of 3 to 30 ?m, for a negative electrode of lithium ion capacitors comprising the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 ?m at 500° C. to 1250° C. under an inert gas atmosphere containing a halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by the demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at less than 1100° C. under a non-oxidizing gas atmosphere.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 29, 2016
    Assignees: KUREHA CORPORATION, KURARAY CO., LTD., KURARAY CHEMICAL CO., LTD.
    Inventors: Naohiro Sonobe, Yasuhiro Tada, Jiro Masuko, Hajime Komatsu, Junichi Arima, Akimi Ogawa, Kenichi Koyakumaru, Kiyoto Otsuka, Hideharu Iwasaki, Junsang Cho
  • Patent number: 9478805
    Abstract: Provided is a manufacturing method of carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium is sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries. The method for manufacturing a carbonaceous material having an average particle diameter of 3 to 30 ?m, for a negative electrode of non-aqueous electrolyte secondary batteries includes the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 ?m at 500° C. to 1250° C. under an inert gas atmosphere containing halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at 1000° C. to 1600° C. under an non-oxidizing gas atmosphere.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: October 25, 2016
    Assignees: KUREHA CORPORATION, KURARAY CO., LTD., KURARAY CHEMICAL CO., LTD.
    Inventors: Yasuhiro Tada, Yasushi Ebihara, Mayu Komatsu, Jiro Masuko, Hajime Komatsu, Naohiro Sonobe, Junichi Arima, Akimi Ogawa, Shinya Tago, Kenichi Koyakumaru, Hideharu Iwasaki, Kiyoto Otsuka
  • Publication number: 20160064735
    Abstract: The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium is sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of non-aqueous electrolyte secondary batteries. The object can be solved by a method for manufacturing a carbonaceous material having an average particle diameter of 3 to 30 ?m, for a negative electrode of non-aqueous electrolyte secondary batteries comprising the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 ?m at 500° C. to 1250° C. under an inert gas atmosphere containing halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at 1000° C. to 1600° C.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 3, 2016
    Applicants: KUREHA CORPORATION, KURARAY CHEMICAL CO., LTD., KURARAY CO., LTD.
    Inventors: Yasuhiro TADA, Yasushi EBIHARA, Mayu KOMATSU, Jiro MASUKO, Hajime KOMATSU, Naohiro SONOBE, Junichi ARIMA, Akimi OGAWA, Shinya TAGO, Kenichi KOYAKUMARU, Hideharu IWASAKI, Kiyoto OTSUKA
  • Publication number: 20150270072
    Abstract: The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of lithium ion capacitors, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium and iron are sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of lithium ion capacitors. The object can be solved by a method for manufacturing a carbonaceous material having an average diameter of 3 to 30 ?m, for a negative electrode of lithium ion capacitors comprising the steps of: (1) heating plant-derived char having an average particle diameter of 100 to 10000 ?m at 500° C. to 1250° C. under an inert gas atmosphere containing a halogen compound to demineralize in a gas-phase, (2) pulverizing a carbon precursor obtained by the demineralization in a gas-phase, (3) calcining the pulverized carbon precursor at less than 1100° C. under a non-oxidizing gas atmosphere.
    Type: Application
    Filed: August 30, 2013
    Publication date: September 24, 2015
    Applicants: KUREHA CORPORATION, KURARAY CHEMICAL CO., LTD., KURARAY CO., LTD.
    Inventors: Naohiro Sonobe, Yasuhiro Tada, Jiro Masuko, Hajime Komatsu, Junichi Arima, Akimi Ogawa, Kenichi Koyakumaru, Kiyoto Otsuka, Hideharu Iwasaki, Junsang Cho
  • Publication number: 20150263347
    Abstract: The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity (discharge capacity), non-dedoping capacity (irreversible capacity), and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor (i.e. non-graphitizable carbon precursor, graphitizable carbon, or mixture thereof) or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.
    Type: Application
    Filed: August 30, 2013
    Publication date: September 17, 2015
    Applicants: KUREHA CORPORATION, KURARAY CHEMICAL CO., LTD., KURARAY CO., LTD.
    Inventors: Makoto Imaji, Kenta Aoki, Yasuhiro Tada, Naohiro Sonobe, Junichi Arima, Kenichi Koyakumaru, Hideharu Iwasaki, Kiyoto Otsuka, Jiro Masuko, Hajime Komatsu, Shinya Tago
  • Patent number: 8945445
    Abstract: Provided is a method of producing an anode material for a non-aqueous electrolyte secondary battery having battery characteristics equivalent to those of a conventional product by simpler production steps than those of a conventional method. A thermally-polymerized petroleum based or coal based pitch is cooled to the softening point or below so that the pitch is solidified to obtain a solidified pitch. The solidified pitch is ground to form a fine pitch powder having an average particle size (median size) of 60 ?m or smaller. Then, the fine pitch powder is compression molded at a pressure of 20 to 100 MPa or 0.1 to 6 MN/m to form a porous compression molded pitch. The porous compression molded pitch is subjected to infusibilization treatment.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: February 3, 2015
    Assignee: Kureha Corporation
    Inventors: Hajime Komatsu, Kenjiro Hara, Michihisa Miyahara
  • Patent number: 8470206
    Abstract: There are provided a method of producing an anode material for a non-aqueous electrolyte secondary battery which is suitable for use in a high input/output current-type non-aqueous electrolyte secondary battery exemplified by a non-aqueous electrolyte secondary battery for a hybrid electric vehicle (HEV), has reduced irreversible capacity and superior charge-discharge efficiency, and an anode material obtained by the above production method. A method of producing an anode material for a non-aqueous electrolyte secondary battery from a petroleum-based pitch material, comprising a tar removal step in which an infusibilized pitch having an oxygen content of 5 to 20 wt % is heated to a temperature of 480° C. to 700° C. while flowing an inert gas at the space velocity of 0 to 120 (min?1).
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: June 25, 2013
    Assignee: Kureha Corporation
    Inventors: Kazuhiko Shimizu, Hajime Komatsu, Kenjiro Hara, Michihisa Miyahara
  • Publication number: 20120043684
    Abstract: Provided is a method of producing an anode material for a non-aqueous electrolyte secondary battery having battery characteristics equivalent to those of a conventional product by simpler production steps than those of a conventional method. A thermally-polymerized petroleum based or coal based pitch is cooled to the softening point or below so that the pitch is solidified to obtain a solidified pitch. The solidified pitch is ground to form a fine pitch powder having an average particle size (median size) of 60 ?m or smaller. Then, the fine pitch powder is compression molded at a pressure of 20 to 100 MPa or 0.1 to 6 MN/m to form a porous compression molded pitch. The porous compression molded pitch is subjected to infusibilization treatment.
    Type: Application
    Filed: July 21, 2011
    Publication date: February 23, 2012
    Applicant: KUREHA CORPORATION
    Inventors: Hajime Komatsu, Kenjiro Hara, Michihisa Miyahara
  • Publication number: 20110253928
    Abstract: There are provided a method of producing an anode material for a non-aqueous electrolyte secondary battery which is suitable for use in a high input/output current-type non-aqueous electrolyte secondary battery exemplified by a non-aqueous electrolyte secondary battery for a hybrid electric vehicle (HEV), has reduced irreversible capacity and superior charge-discharge efficiency, and an anode material obtained by the above production method. A method of producing an anode material for a non-aqueous electrolyte secondary battery from a petroleum-based pitch material, comprising a tar removal step in which an infusibilized pitch having an oxygen content of 5 to 20 wt % is heated to a temperature of 480° C. to 700° C. while flowing an inert gas at the space velocity of 0 to 120 (min?1).
    Type: Application
    Filed: December 14, 2009
    Publication date: October 20, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Kazuhiko Shimizu, Hajime Komatsu, Kenjiro Hara, Michihisa Miyahara
  • Patent number: 6080764
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## [wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: June 27, 2000
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5985869
    Abstract: Novel benzoheterocyclic compounds of the formula: ##STR1## wherein R.sup.1 is H, halogen, alkyl, optionally substituted amino, alkoxy; R.sup.2 is H, halogen, alkoxy, phenylalkoxy, OH, alkyl, optionally substituted amino, carbamoyl-alkoxy, optionally substituted amino-alkoxy, optionally substituted benzoyloxy; R.sup.3 is a group: --NR.sup.4 R.sup.5 or --CO--NR.sup.11 R.sup.12 ; R.sup.4 is H, optionally substitued benzoyl, alkyl; R.sup.5 is a group: ##STR2## [R.sup.16 is halogen, optionally substituted alkyl, OH, alkoxy, alkanoyloxy, alkylthio, alkanoyl, carboxy, alkoxycarbonyl, CN, NO.sub.2, optionally substituted amino, phenyl, cycloalkyl, etc., or a group: --O--A--NR.sup.6 R.sup.7 ; m is 0 to 3], phenyl-alkoxycarbonyl, alkanoyl, phenylalkanoyl, etc.; R.sup.11 is H or alkyl; R.sup.12 is cycloalkyl or optionally substituted phenyl; and W is a group: --(CH.sub.2).sub.p (p is 3 to 5) or --CH.dbd.CH--(CH.sub.2).sub.q (q is 1 to 3), the carbon atom of these groups beign optionally replaced by O, S, SO, SO.sub.
    Type: Grant
    Filed: July 15, 1997
    Date of Patent: November 16, 1999
    Assignee: Otsuka Pharmaceutical Company, Limited
    Inventors: Hidenori Ogawa, Hisashi Miyamoto, Kazumi Kondo, Hiroshi Yamashita, Kenji Nakaya, Hajime Komatsu, Michinori Tanaka, Shinya Kora, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5888314
    Abstract: In a process for the preparation of oriented electrical steel sheet having a high magnetic flux density a primary recrystallization annealed steel sheet is nitrided for a short period of time in a temperature range of 800.degree. C. or less whereby growth of crystal grains does not substantially occur. The nitrided sheet is held at a temperature range of 700.degree. C. to 800.degree. C. for at least four hours during temperature raising to final annealing temperature whereby nitride formed by the nitriding dissolves and re-precipitates allowing the nitride to transform to a thermally stable nitride containing aluminium.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: March 30, 1999
    Assignee: Nippon Steel Corporation
    Inventors: Yoshiyuki Ushigami, Fumio Kurosawa, Hajime Komatsu
  • Patent number: 5753677
    Abstract: Novel benzoheterocyclic compounds of the formula: ##STR1## which have excellent vasopressin antagonistic activities and are useful as vasodilator, hypotensive agent, water diuretics, platelet agglutination inhibitor, and a vasopressin antagonistic composition containing the compound as the active ingredient.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 19, 1998
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Hidenori Ogawa, Hisashi Miyamoto, Kazumi Kondo, Hiroshi Yamashita, Kenji Nakaya, Hajime Komatsu, Michinori Tanaka, Shinya Kora, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5753644
    Abstract: An object of the present invention is to provide a vasopressin antagonist and oxytocin antagonist.The vasopressing antagonist and oxytocin antagonist according to the present invention contain, as the active ingredient, a benzoheterocyclic compound represented by the general formula (1): ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and the carbon-carbon bond between 4- and 5-positions in the benzoazepine skeleton are the same as defined in claims 1, 2 and 3.) or salt thereof.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: May 19, 1998
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Hidenori Ogawa, Kazumi Kondo, Hiroshi Yamashita, Kenji Nakaya, Hajime Komatsu, Michinori Tanaka, Kazuyoshi Kitano, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5677319
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## ?wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom! or a salt thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 14, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5643932
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), ##STR1## [wherein R.sup.1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R.sup.2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R.sup.3 represents a group of the formula, ##STR2## (R.sup.4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group. m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: July 1, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: 5639770
    Abstract: A thiazole derivative of the general formula: ##STR1## The thiazole derivatives have an excellent inhibitory activity for superoxide radical.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: June 17, 1997
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi
  • Patent number: RE37556
    Abstract: A superoxide radical inhibitor containing, as an effective ingredient, an azole derivative represented by the general formula (1), [wherein R1 represents a phenyl group which may have 1-3 lower alkoxy groups as substituent(s) on the phenyl ring, a phenyl group having a lower alkylenedioxy group, or the like; R2 represents a hydrogen atom, a phenyl group, a halogen atom, a lower alkoxycarbonyl group, a lower alkyl group, an amino-lower alkyl group which may have a lower alkyl group as a substituent, a dihydrocarbostyril group, or the like; R3 represents a group of the formula, (R4B represents a hydroxyl group, a carboxy group, a lower alkenyl group or a lower alkyl group, m represents 0, 1 or 2); X represents a sulfur atom or an oxygen atom] or a salt thereof.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: February 19, 2002
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Masatoshi Chihiro, Hajime Komatsu, Michiaki Tominaga, Yoichi Yabuuchi