Patents by Inventor Koichi Toriyama
Koichi Toriyama 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: 10511024Abstract: An electrode for a nonaqueous electrolyte secondary battery includes an electrode mixture layer. The electrode mixture layer contains a hollow active material particle and a needle-shaped filler having a through-hole that extends through the needle-shaped filler in a longitudinal direction. The needle-shaped filler is arranged on surfaces of the hollow active material particle.Type: GrantFiled: January 7, 2016Date of Patent: December 17, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Tatsuya Hashimoto, Naoyuki Wada, Keiichi Takahashi, Koichi Toriyama
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Patent number: 10320002Abstract: A method for manufacturing an electrode sheet includes the steps of forming a granulated material containing a plurality of granules; forming an electrode mixture layer by molding the granulated material into a sheet; and placing the electrode mixture layer on electrode current collector foil. The step of forming the granulated material includes the steps of forming a granule containing at least an electrode active material and a binder; and adhering a polyglycerol fatty acid ester to a surface of the granule.Type: GrantFiled: June 20, 2016Date of Patent: June 11, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Tatsuya Hashimoto, Yusuke Fukumoto, Naoto Onodera, Koichi Toriyama
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Patent number: 10193122Abstract: A separator includes a base material layer and a heat resistance layer. The heat resistance layer includes, in a direction of thickness of the heat resistance layer, a central portion and a first end portion and a second end portion between which the central portion lies. The first end portion includes an interface with an electrode. The second end portion includes an interface with the base material layer. A composition ratio of a resin binder to a total mass of inorganic particles and the resin binder in the first end portion and the second end portion is not lower than 8 mass % and not higher than 30 mass %. A composition ratio of the resin binder to a total mass of the inorganic particles and the resin binder in the central portion is not lower than 2 mass % and not higher than 7 mass %.Type: GrantFiled: September 9, 2016Date of Patent: January 29, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Harunari Shimamura, Yusuke Fukumoto, Koichi Toriyama
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Patent number: 9972824Abstract: An inversion plate short-circuits the positive electrode external terminal and the negative electrode external terminal to each other by changing its position. A temperature sensitive member is disposed adjacent to the inversion plate on the side opposite to a direction in which the inversion plate changes its position. The volume of temperature sensitive member increases due to a rise in temperature. The temperature sensitive member contains aluminum phosphite and calcium carbonate.Type: GrantFiled: March 7, 2017Date of Patent: May 15, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Tatsuya Hashimoto, Hiroaki Imanishi, Yukinobu Miyamura, Koichi Toriyama
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Patent number: 9819027Abstract: A method for producing a battery resulting from the joining with a plurality of weld nuggets therebetween of a foil layered part, at which foil exposed portions exposing an aluminum foil overlap, and a positive terminal member made of aluminum, includes: a formation step for forming at the foil layered part a foil welded part at which are formed, by welding aluminum foils together by means of ultrasonic welding, a first high-position part at at least a section of a surface to be joined, and a plurality of first low-position parts distributed at scattered points within the first high-position part; and a resistance-welding step for contacting the first high-position part to the positive terminal member, generating weld nuggets at the first low-position part by flowing an electric current, and resistance-welding the foil welded part and the positive terminal member with the weld nuggets therebetween.Type: GrantFiled: June 28, 2012Date of Patent: November 14, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventors: Toshihiko Inoue, Masaharu Miyahisa, Hajime Konishi, Koichi Toriyama
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Publication number: 20170263915Abstract: An inversion plate short-circuits the positive electrode external terminal and the negative electrode external terminal to each other by changing its position. A temperature sensitive member is disposed adjacent to the inversion plate on the side opposite to a direction in which the inversion plate changes its position. The volume of temperature sensitive member increases due to a rise in temperature. The temperature sensitive member contains aluminum phosphite and calcium carbonate.Type: ApplicationFiled: March 7, 2017Publication date: September 14, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Tatsuya HASHIMOTO, Hiroaki IMANISHI, Yukinobu MIYAMURA, Koichi TORIYAMA
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Publication number: 20170077478Abstract: A separator includes a base material layer and a heat resistance layer. The heat resistance layer includes, in a direction of thickness of the heat resistance layer, a central portion and a first end portion and a second end portion between which the central portion lies. The first end portion includes an interface with an electrode. The second end portion includes an interface with the base material layer. A composition ratio of a resin binder to a total mass of inorganic particles and the resin binder in the first end portion and the second end portion is not lower than 8 mass % and not higher than 30 mass %. A composition ratio of the resin binder to a total mass of the inorganic particles and the resin binder in the central portion is not lower than 2 mass % and not higher than 7 mass %.Type: ApplicationFiled: September 9, 2016Publication date: March 16, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Harunari SHIMAMURA, Yusuke FUKUMOTO, Koichi TORIYAMA
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Publication number: 20170018779Abstract: A method for manufacturing an electrode sheet includes the steps of forming a granulated material containing a plurality of granules; forming an electrode mixture layer by molding the granulated material into a sheet; and placing the electrode mixture layer on electrode current collector foil. The step of forming the granulated material includes the steps of forming a granule containing at least an electrode active material and a binder; and adhering a polyglycerol fatty acid ester to a surface of the granule.Type: ApplicationFiled: June 20, 2016Publication date: January 19, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Tatsuya HASHIMOTO, Yusuke FUKUMOTO, Naoto ONODERA, Koichi TORIYAMA
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Patent number: 9515313Abstract: A nonaqueous electrolyte secondary battery includes: a positive electrode collector core material; and a sheet body including a plurality of granulation bodies. The sheet body is disposed on the positive electrode collector core material. The granulation bodies each contain a first positive electrode active material particle, a second positive electrode active material particle, and expanded graphite, the first positive electrode active material particle including lithium-nickel composite oxide, the second positive electrode active material particle including lithium iron phosphate.Type: GrantFiled: April 27, 2015Date of Patent: December 6, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Umeyama, Tatsuya Hashimoto, Yusuke Fukumoto, Yuji Yokoyama, Koichi Toriyama
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Patent number: 9507282Abstract: The present invention provides an electrophotographic photoreceptor comprising a multilayered photosensitive layer or a monolayer photosensitive layer, wherein the multilayered photosensitive layer comprises at least a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material that are stacked on a conductive substrate in this order, and the monolayer photosensitive layer contains a charge generation material and a charge transport material that is stacked on a conductive substrate, wherein the electrophotographic photoreceptor contains 5 to 17 wt % of fluorine resin fine particles and their aggregates with respect to all photoreceptor components in a surface layer of the photoreceptor, wherein the fluorine resin fine particles are 0.1 to 0.Type: GrantFiled: May 18, 2015Date of Patent: November 29, 2016Assignee: Sharp Kabushiki KaishaInventors: Akiko Kihara, Kotaro Fukushima, Masaki Hashimoto, Koichi Toriyama, Takahiro Kurauchi, Rikiya Matsuo, Tomoko Kanazawa, Chikako Iibachi
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Publication number: 20160204438Abstract: An electrode for a nonaqueous electrolyte secondary battery includes an electrode mixture layer. The electrode mixture layer contains a hollow active material particle and a needle-shaped filler having a through-hole that extends through the needle-shaped filler in a longitudinal direction. The needle-shaped filler is arranged on surfaces of the hollow active material particle.Type: ApplicationFiled: January 7, 2016Publication date: July 14, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Tatsuya HASHIMOTO, Naoyuki WADA, Keiichi TAKAHASHI, Koichi TORIYAMA
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Patent number: 9316933Abstract: An electrophotographic photoreceptor having a photosensitive layer formed on a conductive substrate, wherein the photosensitive layer contains oxygen-containing fluorinated fine particles in a surface layer thereof, and the oxygen-containing fluorinated fine particles have an oxygen composition ratio of 0.9 to 3.0% by atom based on the whole composition of the fine particles according to an X-ray fluorescence composition analysis.Type: GrantFiled: May 20, 2014Date of Patent: April 19, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Kotaro Fukushima, Kimiko Kumazawa, Koichi Toriyama, Takahiro Kurauchi, Tomoko Kanazawa, Chikako Iibachi, Rikiya Matsuo
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Publication number: 20150346615Abstract: The present invention provides an electrophotographic photoreceptor comprising a multilayered photosensitive layer or a monolayer photosensitive layer, wherein the multilayered photosensitive layer comprises at least a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material that are stacked on a conductive substrate in this order, and the monolayer photosensitive layer contains a charge generation material and a charge transport material that is stacked on a conductive substrate, wherein the electrophotographic photoreceptor contains 5 to 17 wt % of fluorine resin fine particles and their aggregates with respect to all photoreceptor components in a surface layer of the photoreceptor, wherein the fluorine resin fine particles are 0.1 to 0.Type: ApplicationFiled: May 18, 2015Publication date: December 3, 2015Inventors: Akiko KIHARA, Kotaro FUKUSHIMA, Masaki HASHIMOTO, Koichi TORIYAMA, Takahiro KURAUCHI, Rikiya MATSUO, Tomoko KANAZAWA, Chikako IIBACHI
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Publication number: 20150333324Abstract: A nonaqueous electrolyte secondary battery includes: a positive electrode collector core material; and a sheet body including a plurality of granulation bodies. The sheet body is disposed on the positive electrode collector core material. The granulation bodies each contain a first positive electrode active material particle, a second positive electrode active material particle, and expanded graphite, the first positive electrode active material particle including lithium-nickel composite oxide, the second positive electrode active material particle including lithium iron phosphate.Type: ApplicationFiled: April 27, 2015Publication date: November 19, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya UMEYAMA, Tatsuya HASHIMOTO, Yusuke FUKUMOTO, Yuji YOKOYAMA, Koichi TORIYAMA
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Publication number: 20150147598Abstract: A method for producing a battery resulting from the joining with a plurality of weld nuggets therebetween of a foil layered part, at which foil exposed portions exposing an aluminum foil overlap, and a positive terminal member made of aluminum, includes: a formation step for forming at the foil layered part a foil welded part at which are formed, by welding aluminum foils together by means of ultrasonic welding, a first high-position part at at least a section of a surface to be joined, and a plurality of first low-position parts distributed at scattered points within the first high-position part; and a resistance-welding step for contacting the first high-position part to the positive terminal member, generating weld nuggets at the first low-position part by flowing an electric current, and resistance-welding the foil welded part and the positive terminal member with the weld nuggets therebetween.Type: ApplicationFiled: June 28, 2012Publication date: May 28, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toshihiko Inoue, Masaharu Miyahisa, Hajime Konishi, Koichi Toriyama
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Publication number: 20150017580Abstract: An electrophotographic photoreceptor having a photosensitive layer formed on a conductive substrate, wherein the photosensitive layer contains oxygen-containing fluorinated fine particles in a surface layer thereof, and the oxygen-containing fluorinated fine particles have an oxygen composition ratio of 0.9 to 3.0% by atom based on the whole composition of the fine particles according to an X-ray fluorescence composition analysis.Type: ApplicationFiled: May 20, 2014Publication date: January 15, 2015Inventors: Kotaro FUKUSHIMA, Kimiko KUMAZAWA, Koichi TORIYAMA, Takahiro KURAUCHI, Tomoko KANAZAWA, Chikako IIBACHI, Rikiya MATSUO
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Patent number: 8568946Abstract: An electrophotographic photoreceptor, comprising a conductive support, an undercoat layer and a photosensitive layer formed in sequence, the electrophotographic photoreceptor characterized in that a coating solution for undercoat layer formation for producing the electrophotographic photoreceptor contains at least a binder resin and metal oxide particles surface-treated with anhydrous silicon dioxide.Type: GrantFiled: February 26, 2010Date of Patent: October 29, 2013Assignee: Sharp Kabushiki KaishaInventors: Satoshi Katayama, Koichi Toriyama, Kimiko Nishi
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Patent number: 8367287Abstract: An electrophotographic photoconductor of the invention comprising: an conductive support; a light-sensitive layer formed on the conductive support and containing a charge generating material and a charge transport material; and a surface protective layer formed on the light-sensitive layer and made of a resin composition, wherein the resin composition constituting the surface protective layer contains an amine compound represented by the following formula (1): wherein R1 and R2 are, the same or different, each an alkyl group or an allyl group which may have a substituent or a heterocyclic residue to be formed through or not through a nitrogen atom or an oxygen atom together with the nitrogen atom to which R1 and R2 are bonded, R3 and R4 are, the same or different, each an alkyl group having a substituent and n denotes 1 or 2, provided that when n is 1, X is a hydrogen atom, a halogen atom, or an alkyl group, a hydroxyl group or a mercapto group which may have a substituent, or a ring optionally containingType: GrantFiled: December 21, 2006Date of Patent: February 5, 2013Assignee: Sharp Kabushiki KaishaInventors: Hiroshi Sugimura, Kotaro Fukushima, Koichi Toriyama
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Patent number: 8338065Abstract: An electrophotographic photoreceptor comprising: a conductive support, a photosensitive layer and an intermediate layer interposed between the conductive support and the photosensitive layer, wherein the intermediate layer contains metal oxide microparticles surface-treated with silicon dioxide anhydride and a binder resin; and the binder resin contains a polyamide resin containing a piperazine-based compound.Type: GrantFiled: October 4, 2010Date of Patent: December 25, 2012Assignee: Sharp Kabushiki KaishaInventors: Satoshi Katayama, Koichi Toriyama, Hiroshi Sugimura
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Patent number: 8340551Abstract: The present invention therefore provides an image forming apparatus, comprising: a photoconductor; a charge means for charging the photoconductor; an exposure means for irradiating a surface of the photoconductor with light to form an electrostatic latent image; a development means for developing the electrostatic latent image formed; a transfer means for transferring the image developed onto a paper sheet; and a discharge means for irradiating the surface of the photoconductor with light to eliminate charges, wherein the photoconductor contains a titanylphthalocyanine having absorption bands in a wavelength region of 380 nm to 420 nm and a wavelength region of 600 nm to 850 nm as a charge generation material, the exposure means irradiates the surface of the photoconductor with light having a wavelength of 380 nm to 420 nm to form the electrostatic latent image, and the discharge means irradiates the surface of the photoconductor with light having a wavelength of 600 nm to 850 nm to eliminate the charges.Type: GrantFiled: May 19, 2010Date of Patent: December 25, 2012Assignee: Sharp Kabushiki KaishaInventors: Takayuki Yamanaka, Koichi Toriyama, Kotaro Fukushima, Masanori Matsumoto