Patents by Inventor Soichiro Kawakami

Soichiro Kawakami 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).

  • Publication number: 20070031730
    Abstract: An electrode material for an anode of a rechargeable lithium battery, containing a particulate comprising an amorphous Sn.A.X alloy with a substantially non-stoichiometric ratio composition. For said formula Sn.A.X, A indicates at least one kind of an element selected from a group consisting of transition metal elements, X indicates at least one kind of an element selected from a group consisting of O, F, N, Mg, Ba, Sr, Ca, La, Ce, Si, Ge, C, P. B Pb Bi, Sb, Al, Ga, In, Tl Zn, Be, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, As, Se, Te, Li and S, where the element X is not always necessary to be contained. The content of the constituent element Sn of the amorphous Sn.A.X alloy is Sn/(Sn+A+X)=20 to 80 atomic %.
    Type: Application
    Filed: October 10, 2006
    Publication date: February 8, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Soichiro Kawakami, Masaya Asao
  • Patent number: 7141187
    Abstract: An electrode material for a rechargeable lithium battery, characterized in that said electrode material comprises a fine powder of a silicon-based material whose principal component is silicon element, said fine powder having an average particle size (R) in a range of 0.1 ?m?R<0.5 ?m. An electrode structural body for a rechargeable lithium battery, having an electrode material layer comprising said silicon-based material fine powder. A rechargeable lithium battery whose anode comprising said electrode structural body.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 28, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kosuzu, Soichiro Kawakami, Masaya Asao, Hidetoshi Tsuzuki, Takao Ogura, Naoya Kobayashi
  • Publication number: 20060237697
    Abstract: An electrode material for a rechargeable lithium battery, characterized in that said electrode material comprises a fine powder of a silicon-based material whose principal component is silicon element, said fine powder having an average particle size (R) in a range of 0.1 ?m?R<0.5 ?m. An electrode structural body for a rechargeable lithium battery, having an electrode material layer comprising said silicon-based material fine powder. A rechargeable lithium battery whose anode comprising said electrode structural body.
    Type: Application
    Filed: June 21, 2006
    Publication date: October 26, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takeshi Kosuzu, Soichiro Kawakami, Masaya Asao, Hidetoshi Tsuzuki, Takao Ogura, Naoya Kobayashi
  • Patent number: 7081320
    Abstract: A secondary battery exhibiting a long cycle life and comprising a negative pole activating material made of lithium or zinc is provided, the battery at least having a negative pole made of lithium or zinc serving as the negative pole activating material, an electrolyte (electrolytic solution), a separator, a positive pole made of a positive pole activating material, a collecting electrode and a battery case, wherein at least the surface of the negative pole is covered with a film having a structure which allows ions relating to the battery reactions to pass through. Since growth of dendrites of lithium or zinc at the time of charge can be prevented, short circuiting between the negative pole and the positive pole can be prevented. Therefore, the charge/discharge cycle life can significantly be lengthened.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: July 25, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Shinya Mishina, Naoya Kobayashi
  • Publication number: 20060127773
    Abstract: In an electrode structure for a lithium secondary battery including: a main active material layer formed from a metal powder selected from silicon, tin and an alloy thereof that can store and discharge and capable of lithium by electrochemical reaction, and a binder of an organic polymer; and a current collector, wherein the main active material layer is formed at least by a powder of a support material for supporting the electron conduction of the main active material layer in addition to the metal powder and the powder of the support material are particles having a spherical, pseudo-spherical or pillar shape with an average particle size of 0.3 to 1.35 times the thickness of the main active material layer. The support material is one or more materials selected from a group consisting of graphite, oxides of transition metals and metals that do not electrochemically form alloy with lithium. Organic polymer compounded with a conductive polymer is used for the binder.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Soichiro Kawakami, Akira Morita, Takao Ogura
  • Patent number: 7060117
    Abstract: A thin rechargeable lithium battery having a battery main body enclosed between sealing members (a) and (b), at least sealing member (a) having a concave portion that extends to either side from a central position so as to have a peripheral collar portion (a-i) which surrounds the concave portion, sealing member (b) having a peripheral collar portion (b-i) corresponding to the collar portion (a-i) of sealing member (a) and the two sealing members (a) and (b) being opposingly arranged such that the face of said concave portion of sealing member (a) faces sealing member (b) through the battery main body, wherein collar portions (a-i) and (b-i) are mutually welded, and either sealing member (a) or (b) is provided with a power output terminal having electrical continuity with the battery main body and an insulating portion for insulating said terminal.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: June 13, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Ogura, Soichiro Kawakami
  • Publication number: 20060062713
    Abstract: A carbonaceous particle is provided which comprises a hexagonal flake formed of an aggregate of a plurality of nanocarbons and having a side length of 0.1 to 100 mm and a thickness of 10 nm to 1 mm. Thereby, a carbonaceous particle is provided which has an excellent electron emission performance, has a high electron conductivity, shows excellent characteristics particularly when used for a secondary battery, and can suitably be applied to various devices other than a secondary battery as well.
    Type: Application
    Filed: April 2, 2004
    Publication date: March 23, 2006
    Applicant: CANNON KABUSHIKI KAISHA
    Inventors: Hitomi Sano, Soichiro Kawakami, Tomoya Yamamoto, Katsuhiko Inoue
  • Publication number: 20060040182
    Abstract: The electrode material for a lithium secondary battery according to the present invention includes particles of a solid state alloy having silicon as a main component, wherein the particles of the solid state alloy have a microcrystal or amorphous material including an element other than silicon, dispersed in microcrystalline silicon or amorphized silicon. The solid state alloy preferably contains a pure metal or a solid solution. The composition of the alloy preferably has an element composition in which the alloy is completely mixed in a melted liquid state, whereby the alloy has a single phase in a melted liquid state without presence of two or more phases. The element composition can be determined by the kind of elements constituting the alloy and an atomic ratio of the elements.
    Type: Application
    Filed: March 24, 2004
    Publication date: February 23, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Masaya Asao, Nobuyuki Suzuki, Yasuhiro Yamada, Takao Ogura
  • Patent number: 7001581
    Abstract: A method for producing fullerenes, characterized in that said method includes a step (a) of contacting an aromatic compound-containing starting material with a supercritical fluid or a subcritical fluid in the presence of a transition metal element-containing catalyst at a temperature in a range of from 350 to 800° C. and at a pressure in a range of from 3 to 50 MPa. Said supercritical fluid or said subcritical fluid is formed from one or more kinds of materials selected from the group consisting of an aromatic compound as said starting material, a solvent for said aromatic compound, a solvent for said catalyst, water, dinitrogen monoxide, and ammonia.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: February 21, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Tomoya Yamamoto, Hitomi Sano, Atsushi Tani
  • Publication number: 20060006837
    Abstract: A thin rechargeable lithium battery having a battery main body enclosed between sealing members (a) and (b), at least sealing member (a) having a concave portion that extends to either side from a central position so as to have a peripheral collar portion (a-i) which surrounds the concave portion, sealing member (b) having a peripheral collar portion (b-i) corresponding to the collar portion (a-i) of sealing member (a) and the two sealing members (a) and (b) being opposingly arranged such that the face of said concave portion of sealing member (a) faces sealing member (b) through the battery main body, wherein collar portions (a-i) and (b-i) are mutually welded, and either sealing member (a) or (b) is provided with a power output terminal having electrical continuity with the battery main body and an insulating portion for insulating said terminal.
    Type: Application
    Filed: September 16, 2005
    Publication date: January 12, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takao Ogura, Soichiro Kawakami
  • Publication number: 20050266605
    Abstract: A process for patterning a nanocarbon material includes a step of forming a nanocarbon layer on a substrate; a step of forming a first metal layer on the nanocarbon layer to pattern the first metal layer, the first metal layer containing at least one selected from the group consisting of zinc, tin, indium, aluminum, and titanium; and a step of etching the nanocarbon layer with oxygen plasma using the first metal layer as a positive pattern. Also, a method for manufacturing a semiconductor device including a semiconductor layer containing a nanocarbon material includes a step of patterning a nanocarbon material by the above process; and, a semiconductor device containing a nanocarbon material includes a semiconductor layer including a nanocarbon sub-layer patterned by the process.
    Type: Application
    Filed: May 27, 2005
    Publication date: December 1, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Soichiro Kawakami
  • Patent number: 6953564
    Abstract: A method for producing fullerenes, characterized in that said method includes a step (a) of contacting an aromatic compound-containing starting material with a supercritical fluid or a subcritical fluid at a temperature in a range of from 31° C. to 500° C. and at a pressure in a range of from 3.8 MPa to 60 MPa. Said supercritical fluid or said subcritical fluid is formed from one or more kinds of materials selected from the group consisting of an aromatic compound as said starting material, a solvent capable of dissolving said aromatic compound, water, dinitrogen monoxide, and ammonia.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: October 11, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Tomoya Yamamoto, Hitomi Sano
  • Patent number: 6953642
    Abstract: An ion conductor structural body principally comprising (a) a polymer matrix, (b) a solvent capable of functioning as a plasticizer and (c) an electrolyte, wherein said polymer matrix (a) comprises a polymer chain having at least a segment represented by the following general formula (1), a main chain portion of said polymer chain and a side chain portion of said segment have an orientation property, and said polymer matrix has a crosslinked structure. (wherein R1 and R2 are respectively H or an alkyl group of 2 or less carbon atoms, A is a group having at least a polyether group, and R3 is a group having at least a alkyl group of more than 6 carbon atoms.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 11, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoya Yamamoto, Soichiro Kawakami, Toshifumi Akasaka
  • Patent number: 6949312
    Abstract: An electrode material for an anode of a rechargeable lithium battery, containing a particulate comprising an amorphous Sn.A.X alloy with a substantially non-stoichiometric ratio composition. For said formula Sn.A.X, A indicates at least one kind of an element selected from a group consisting of transition metal elements, X indicates at least one kind of an element selected from a group consisting of O, F, N, Mg, Ba, Sr, Ca, La, Ce, Si, Ge, C, P, B, Pb, Bi, Sb, Al, Ga, In, Tl, Zn, Be, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, As, Se, Te, Li and S, where the element X is not always necessary to be contained. The content of the constituent element Sn of the amorphous Sn.A.X alloy is Sn/(Sn+A+X)=20 to 80 atomic %.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: September 27, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Masaya Asao
  • Publication number: 20050196678
    Abstract: An ion conductor structural body principally comprising (a) a polymer matrix, (b) a solvent capable of functioning as a plasticizer and (c) an electrolyte, wherein said polymer matrix (a) comprises a polymer chain having at least a segment represented by the following general formula (1), a main chain portion of said polymer chain and a side chain portion of said segment have an orientation property, and said polymer matrix has a crosslinked structure. (wherein R1 and R2 are respectively H or an alkyl group of 2 or less carbon atoms, A is a group having at least a polyether group, and R3 is a group having at least a alkyl group of more than 6 carbon atoms.
    Type: Application
    Filed: April 26, 2005
    Publication date: September 8, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Tomoya Yamamoto, Soichiro Kawakami, Toshifumi Akasaka
  • Patent number: 6932955
    Abstract: Disclosed herein is a powder material comprising a compound which electrochemically intercalates and deintercalates a lithium ion, wherein the powder material is comprised mainly of a compound containing at least an oxygen element, a sulfur element and at least one transition metal element.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: August 23, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoya Yamamoto, Soichiro Kawakami, Naoya Kobayashi
  • Publication number: 20050175901
    Abstract: An electrode material for an anode of a rechargeable lithium battery, containing a particulate comprising an amorphous Sn.A.X alloy with a substantially non-stoichiometric ratio composition. For said formula Sn.A.X, A indicates at least one kind of an element selected from a group consisting of transition metal elements, X indicates at least one kind of an element selected from a group consisting of O, F, N, Mg, Ba, Sr, Ca, La, Ce, Si, Ge, C, P, B, Pb, Bi, Sb, Al, Ga, In, Tl, Zn, Be, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, As, Se, Te, Li and S, where the element X is not always necessary to be contained. The content of the constituent element Sn of the amorphous Sn.A.X alloy is Sn/(Sn+A+X)=20 to 80 atomic %.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 11, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Soichiro Kawakami, Masaya Asao
  • Patent number: 6924059
    Abstract: A thin rechargeable lithium battery having a battery main body enclosed between sealing members (a) and (b), at least sealing member (a) having a concave portion that extends to either side from a central position so as to have a peripheral collar portion (a-i) which surrounds the concave portion, sealing member (b) having a peripheral collar portion (b-i) corresponding to the collar portion (a-i) of sealing member (a) and the two sealing members (a) and (b) being opposingly arranged such that the face of said concave portion of sealing member (a) faces sealing member (b) through the battery main body, wherein collar portions (a-i) and (b-i) are mutually welded, and either sealing member (a) or (b) is provided with a power output terminal having electrical continuity with the battery main body and an insulating portion for insulating said terminal.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: August 2, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Soichiro Kawakami, Takao Ogura
  • Publication number: 20050164081
    Abstract: A thin rechargeable lithium battery having a battery main body enclosed between sealing members (a) and (b), at least sealing member (a) having a concave portion that extends to either side from a central position so as to have a peripheral collar portion (a-i) which surrounds the concave portion, sealing member (b) having a peripheral collar portion (b-i) corresponding to the collar portion (a-i) of sealing member (a) and the two sealing members (a) and (b) being opposingly arranged such that the face of said concave portion of sealing member (a) faces sealing member (b) through the battery main body, wherein collar portions (a-i) and (b-i) are mutually welded, and either sealing member (a) or (b) is provided with a power output terminal having electrical continuity with the battery main body and an insulating portion for insulating said terminal.
    Type: Application
    Filed: March 24, 2005
    Publication date: July 28, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takao Ogura, Soichiro Kawakami
  • Publication number: 20050142446
    Abstract: A process for producing an electrode material for a rechargeable lithium battery, comprising the steps of mixing a metal compound (a) of a metal (a?) capable of being electrochemically alloyed with lithium, a transition metal compound (b) of a transition metal (b?) and a complexing agent (c) with a solvent (d) to obtain a mixed solution, mixing a reducing agent (e) with said mixed solution to obtain a mixture, and oxidizing said reducing agent in said mixture to reduce ion of said metal (a?) and ion of said transition metal (b?) to obtain an amorphous alloy material capable of being electrochemically alloyed with lithium as said electrode material. An electrode structural body in which said electrode material is used, and a rechargeable lithium battery in which said electrode material is used.
    Type: Application
    Filed: August 17, 2004
    Publication date: June 30, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Tomoya Yamamoto, Soichiro Kawakami, Hiroya Umeyama