Patents by Inventor Hideki Shimamoto

Hideki Shimamoto 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: 20220115699
    Abstract: An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material includes a conductive polymer, and the electrolytic solution contains anions and cations. The conductive polymer is capable of doping and dedoping of the anions. The cations includes a lithium ion and a quaternary ammonium ion.
    Type: Application
    Filed: January 22, 2020
    Publication date: April 14, 2022
    Inventors: HIDEO SAKATA, NAO MATSUMURA, HIDEKI SHIMAMOTO, TOSHIAKI SHIMIZU
  • Patent number: 9287059
    Abstract: In an electric storage device, a terminal plate includes an element-connecting part electrically connected to a first electrode at a first end of an electric storage element, and an external terminal connected to this element-connecting part. A sealing member is on the element-connecting part, and includes a hole where the external terminal is inserted. The sealing member and the external terminal seal an opening of an outer jacket. The external terminal includes a tapered part on its outer periphery at a tip, and is partially exposed from the sealing member. The tapered part includes a first end and a second end farther away from the element-connecting part than the first end. An edge of a side wall at the opening of the outer jacket is between the first and second ends of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: March 15, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Teruhisa Miura, Ikufumi Oshima, Kazuhiro Murakami, Hideki Shimamoto, Shusaku Kawasaki, Susumu Nomoto, Motohiro Sakata, Kouji Ueoka, Masayuki Shinjou
  • Patent number: 9218912
    Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: December 22, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shotaro Doi, Hideki Shimamoto, Susumu Nomoto
  • Patent number: 9030805
    Abstract: Two electrodes are drawn out from a wound capacitor element by a pair of leads. Each of electrodes forming the capacitor element includes a sheet-like collector, an electrode layer formed on the surface of the collector, and an exposed part provided on one edge of the collector. The electrode layer is not formed on the exposed part. The electrodes are wound such that the exposed parts come to both ends of the capacitor element. Two or more points of at least one of the exposed parts are connected together.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 12, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Teruhisa Miura, Hideki Shimamoto, Shusaku Kawasaki
  • Patent number: 8988858
    Abstract: A negative electrode for an electrochemical capacitor includes a current collector having electric conductivity, and an electrode layer formed on a surface of the current collector and having cations stored therein. In at least a part of the electrode layer, a value of ratio Ia/Ib of peak value Ia indicating a presence of an anion decomposition compound and peak value Ib indicating a presence of an electrolyte in a spectrum of an atom forming the anion is 0.45 or more and less than 2.55 as measured using X-ray photoelectron spectroscopy.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kiyohiro Isii, Hideki Shimamoto, Junko Fujisawa, Susumu Nomoto
  • Patent number: 8958197
    Abstract: An electrode for capacitor includes a current collector having conductivity, a protective layer formed on the current collector, an anchor coat layer formed on the protective layer, and a polarizing electrode layer formed on the anchor coat layer. The protective layer contains an oxyhydroxide and the anchor coat layer contains conductive particles.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: February 17, 2015
    Assignee: Panasonic Corporation
    Inventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki, Tomohiro Okuzawa
  • Publication number: 20140293510
    Abstract: In an electric storage device, a terminal plate includes an element-connecting part electrically connected to a first electrode at a first end of an electric storage element, and an external terminal connected to this element-connecting part. A sealing member is on the element-connecting part, and includes a hole where the external terminal is inserted. The sealing member and the external terminal seal an opening of an outer jacket. The external terminal includes a tapered part on its outer periphery at a tip, and is partially exposed from the sealing member. The tapered part includes a first end and a second end farther away from the element-connecting part than the first end. An edge of a side wall at the opening of the outer jacket is between the first and second ends of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Teruhisa MIURA, Ikufumi OSHIMA, Kazuhiro MURAKAMI, Hideki SHIMAMOTO, Shusaku KAWASAKI, Susumu NOMOTO, Motohiro SAKATA, Kouji UEOKA, Masayuki SHINJOU
  • Patent number: 8780528
    Abstract: An electrolyte includes an organic solvent, a solute and a compound represented by chemical formula [1], both contained in the organic solvent. R1 and R2 represent a methyl group or an ethyl group; R3 represents a functional group having a straight chain including three or more carbon atoms and a hydroxyl group bonded to a terminal carbon; C represents a carbon atom; H represents a hydrogen atom; O represents an oxygen atom; and N represents a nitrogen atom.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 15, 2014
    Assignee: Panasonic Corporation
    Inventors: Seiji Takagi, Hideki Shimamoto, Hiroyuki Maeshima, Nao Matsumura
  • Patent number: 8693166
    Abstract: A capacitor includes a first collector made of metal foil, a first electrode layer placed on a surface of the first collector and mainly containing a carbonaceous material, a resin layer provided on the first electrode layer, a second electrode provided on the resin layer and mainly containing a carbonaceous material, a second collector provided on the second electrode layer and made of metal foil, a case accommodating the first collector, the first electrode layer, the resin layer, the second electrode, and the second collector therein, and an electrolyte accommodated in the case. The resin layer has a non-woven fabric form of fibers made of resin irregularly bonded to one another. The fibers of the resin layer intertwine with the first electrode layer. The fibers of the resin layer intertwine with the first electrode layer. This capacitor can be thin and small.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki
  • Publication number: 20140085774
    Abstract: An electrolyte includes an organic solvent, a solute and a compound represented by chemical formula [1], both contained in the organic solvent. R1 and R2 represent a methyl group or an ethyl group; R3 represents a functional group having a straight chain including three or more carbon atoms and a hydroxyl group bonded to a terminal carbon; C represents a carbon atom; H represents a hydrogen atom; 0 represents an oxygen atom; and N represents a nitrogen atom.
    Type: Application
    Filed: June 25, 2012
    Publication date: March 27, 2014
    Inventors: Seiji Takagi, Hideki Shimamoto, Hiroyuki Matsumura, Nao Matsumura
  • Publication number: 20130314846
    Abstract: An electrochemical capacitor includes electrolytic solution, a capacitor element, and a housing. The electrolytic solution contains cations, anions, solvent formed of materials other than lactones, and a lactone component. The capacitor element includes a negative electrode, a positive electrode, and a separator. The negative electrode includes an electrode layer capable of storing the cations, and the positive electrode includes a polarizable electrode layer and confronts the negative electrode. The separator is disposed between the negative and positive electrodes, and they are layered or wound together. The capacitor element is impregnated with the electrolytic solution. The housing accommodates the capacitor element and the electrolytic solution that contains the lactone component in a quantity ranging from 0.001 wt % to 5 wt % (inclusive) relative to the solvent.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 28, 2013
    Applicant: Panasonic Corporation
    Inventors: SHOTARO DOI, HIDEKI SHIMAMOTO, SUSUMU NOMOTO
  • Publication number: 20130258553
    Abstract: A pair of electrodes are drawn out from a wound capacitor element by a pair of leads. Each of electrodes forming the capacitor element includes a sheet-like collector, an electrode layer formed on the surface of the collector, and an exposed part provided on one edge of the collector. The electrode layer is not formed on the exposed part. The pair of electrodes are wound such that the exposed parts come to both ends of the capacitor element. Two or more points of at least one of the exposed parts are connected together.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 3, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Teruhisa MIURA, Hideki SHIMAMOTO, Shusaku KAWASAKI
  • Publication number: 20130163148
    Abstract: A negative electrode for an electrochemical capacitor includes a current collector having electric conductivity, and an electrode layer formed on a surface of the current collector and having cations stored therein. In at least a part of the electrode layer, a value of ratio Ia/Ib of peak value Ia indicating a presence of an anion decomposition compound and peak value Ib indicating a presence of an electrolyte in a spectrum of an atom forming the anion is 0.45 or more and less than 2.55 as measured using X-ray photoelectron spectroscopy.
    Type: Application
    Filed: October 14, 2011
    Publication date: June 27, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Kiyohiro Isii, Hideki Shimamoto, Junko Fujisawa, Susumu Nomoto
  • Publication number: 20130148267
    Abstract: A capacitor having an electrolyte solution, in which a sealing member has a gas barrier layer provided with lead holes and through holes, and a rubber material sandwiching the gas barrier layer. The gas barrier layer includes a material having lower gas permeability than the rubber material. The through holes are filled with the rubber material.
    Type: Application
    Filed: September 8, 2011
    Publication date: June 13, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Norihisa Takahara, Hideki Shimamoto, Kiyoshi Hirota, Yuichiro Tsubaki
  • Patent number: 8422199
    Abstract: The present invention provides an electrolyte highly reliable in charge and discharge in a high voltage condition, and an electrochemical capacitor using the same. The electrolyte of the present invention includes a solvent, an electrolyte salt having an anion having a perfluoro alkyl group represented by a following composition formula, and an acid inducing substance having a fluorine atom for an anion, characterized in that the weight ratio of the acid inducing substance is in a range of 0.0001 to 2.0 wt %: MX+[Q(Rf)yFz]X? (wherein Q is a group 13 or group 15 element in the periodic table, Rf is a perfluoro alkyl group (CnF2n+1), n is a natural number, 1?y<6, 1?z<6, MX+ is a cation of Xth valence, and X is a natural number from 1 to 3).
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: April 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Shotaro Doi, Atsuro Shirakami, Kiyohiro Isii, Susumu Nomoto, Hideki Shimamoto
  • Patent number: 8351182
    Abstract: An electric double layer capacitor includes a first collector, a first polarizable electrode layer provided on the first collector, a second collector, a second polarizable electrode layer provided on the second collector and facing the first polarizable electrode layer, a separator having an insulating property and provided between the first polarizable electrode layer and the second polarizable electrode layer, and a driving electrolyte impregnated in the first polarizable electrode layer and the second polarizable electrode layer. The polarizable electrode layers mainly contain activated carbon made from phenol resin, have a surface roughness not larger than 0.6 ?m, and have an electrode density ranging from 0.5 g/cm3 to 0.7 g/cm3. This electric double layer capacitor has characteristics deteriorating little even at low temperatures, thus having a reliability for a long time.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: January 8, 2013
    Assignee: Panasonic Corporation
    Inventors: Chiho Yamada, Eri Hirose, Yoshinori Takamuku, Hideki Shimamoto
  • Publication number: 20130003260
    Abstract: An electrode for capacitor includes a current collector having conductivity, a protective layer formed on the current collector, an anchor coat layer formed on the protective layer, and a polarizing electrode layer formed on the anchor coat layer. The protective layer contains an oxyhydroxide and the anchor coat layer contains conductive particles.
    Type: Application
    Filed: March 28, 2011
    Publication date: January 3, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Keiichi Kondou, Hideki Shimamoto, Yukihiro Shimasaki, Tomohiro Okuzawa
  • Publication number: 20120255858
    Abstract: Activated carbon used for an electrochemical element in which when W1 and W2 satisfy 1.0 nm?W1<W2?2.0 nm, a total pore volume of the activated carbon in which a slit width obtained by an MP method is W1 or more and W2 or less is 15% or more of a total pore volume of the activated carbon in which the slit width obtained by the MP method is 2.0 nm or less. Furthermore, an electrode layer of the electrochemical element includes activated carbon having a large pore volume in which the slit width is W1 or more and W2 or less.
    Type: Application
    Filed: December 14, 2010
    Publication date: October 11, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroyuki Maeshima, Chiho Yamada, Motohiro Sakata, Hideki Shimamoto
  • Publication number: 20120236469
    Abstract: A capacitor includes: a capacitor element; an electrolyte impregnated into at least the capacitor element; a bottomed cylindrical metal case accommodating the capacitor element and the electrolyte; and a sealing body sealing an opening portion of the case. Further, the capacitor also includes a coating layer provided at a portion in contact with the outer surface of the sealing body and formed by dispersing, into resin, an adsorbent adsorbing a solvent included in the electrolyte. Alternatively, the sealing body is formed by dispersing the above-described adsorbent in a rubber component.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 20, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Norihisa Takahara, Hideki Shimamoto, Kiyoshi Hirota, Yuichiro Tsubaki
  • Publication number: 20120100407
    Abstract: An electrical storage unit includes an electrical storage section whose collector-exposed portion formed on both ends of an element is attached to a terminal plate or an outer case, and a pair of cooling plates making contact with an outer surface of the terminal plate or an outer bottom face of the outer case of the electrical storage section. This enables heat release from the electrical storage section to the cooling plate via a material with high heat conductivity, such as a metal member. Accordingly, the electrical storage section heated in charge and discharge cycles can be efficiently cooled.
    Type: Application
    Filed: June 16, 2010
    Publication date: April 26, 2012
    Applicant: Panasonic Corporation
    Inventors: Tatehiko Inoue, Shusaku Kawasaki, Hideki Shimamoto, Susumu Nomoto