Patents by Inventor Yasuo Nakahara
Yasuo Nakahara 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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Publication number: 20200227774Abstract: Various solid-state battery cell arrangements and methods are presented. An anode current collector and anode may be present. A solid electrolyte may be present that is formed using an electrolyte material. A gradational interface located between the solid electrolyte and the anode may be formed. The gradational interface may include a mixture of the electrolyte material and the anode material. The gradational interface can include a greater percentage of the electrolyte material in a first portion of the gradational interface that contacts the solid electrolyte than a second portion of the gradational interface that contacts the anode.Type: ApplicationFiled: January 10, 2019Publication date: July 16, 2020Inventor: Yasuo Nakahara
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Patent number: 7697265Abstract: An electric double layer capacitor comprises an electrode, a current collector, an electrolyte, a separator, a concave-shaped container for accommodating them, and a sealing plate for sealing an opening part of the container, wherein the sealing plate is fitted inside the container. By having a structure fitting the sealing plate inside an opening part of the concave-shaped container, the positioning between the sealing plate and the container becomes easy, and the displacement of the sealing plate in the horizontal direction can be reduced. Thus, the decline of the yield can be prevented.Type: GrantFiled: December 12, 2006Date of Patent: April 13, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Takashi Umemoto, Yasuo Nakahara, Hiroshi Nonoue, Masaaki Nemoto
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Publication number: 20080297981Abstract: The present invention is characterized by obtaining a high charge/discharge capacity upon high rate charging/discharging in a hybrid capacitor having characteristics of both an electric double layer capacitor and a lithium-ion secondary battery. Specifically, the present invention is a capacitor comprising: a positive electrode 1 composed of a polarizable electrode containing activated carbon; a negative electrode 2 containing as an anode active material a carbon material capable of inserting/extracting lithium ion; and a nonaqueous electrolyte containing lithium ion, wherein a charge cutoff potential for the negative electrode 2 is within the range of 0.15 to 0.25 V (vs. Li/Li+).Type: ApplicationFiled: April 25, 2008Publication date: December 4, 2008Applicant: Sanyo Electric Co., Ltd.Inventors: Koji Endo, Yasuo Nakahara, Hiroshi Nonoue
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Patent number: 7414825Abstract: An electrochemical device includes a pair of electrodes at least containing activated carbon powder, a separator interposed between the pair of electrodes, and an electrolytic solution impregnated into the pair of electrodes and the separator. The electrodes and the separator are stacked on a collector. Each of the electrodes includes at least two layers arranged in a thickness direction, and the two layers are made of the activated carbon powder having mutually different average grain sizes. The average grain size of the activated carbon powder in the layer contacting the separator is greater than the average grain size of the activated carbon powder in the layer located on the collector side.Type: GrantFiled: June 27, 2006Date of Patent: August 19, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Kikuko Kato, Yasuo Nakahara, Mamoru Kimoto
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Publication number: 20080187837Abstract: An electrochemical device includes an electrode formed using an electrode active material that includes: a carbon material having a crystal structure in which a plurality of graphite layers (31) are stacked; and a conductive polymer or conductive oligomer (32) which is intercalated between at least part of the graphite layers (31) and in which electron transfer takes place along with redox reaction.Type: ApplicationFiled: January 28, 2008Publication date: August 7, 2008Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yasuo Nakahara, Hiroshi Nonoue
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Patent number: 7321486Abstract: The present invention provides an electric double layer capacitor that has less chance for internal resistance increase. For this objective, in this electric double layer capacitor, an electric double layer capacitor element sandwiches a separator between a cathode and an anode, arranged inside a container comprising a lid and a concave shaped containing portion. On the inner bottom face in the containing portion, an insulating layer having a first conductive layer connected to a connecting terminal, and an opening portion penetrates to the first conductive layer are formed, wherein a second conductive layer fills inside the opening portion. Onto the insulating layer and the second conductive layer, a third conductive layer which laminates a first layer comprised of aluminum and a second layer comprised of carbon, is formed and connected to the cathode. The fourth conductive layer is connected to the anode, and also connected to the connecting terminal.Type: GrantFiled: January 31, 2007Date of Patent: January 22, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Masaaki Nemoto, Koji Endo, Kikuko Kato, Yasuo Nakahara, Hiroshi Nonoue
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Publication number: 20070274024Abstract: The present invention provides an electric double layer capacitor that has less chance for internal resistance increase. For this objective, in this electric double layer capacitor, an electric double layer capacitor element sandwiches a separator between a cathode and an anode, arranged inside a container comprising a lid and a concave shaped containing portion. On the inner bottom face in the containing portion, an insulating layer having a first conductive layer connected to a connecting terminal, and an opening portion penetrates to the first conductive layer are formed, wherein a second conductive layer fills inside the opening portion. Onto the insulating layer and the second conductive layer, a third conductive layer which laminates a first layer comprised of aluminum and a second layer comprised of carbon, is formed and connected to the cathode. The fourth conductive layer is connected to the anode, and also connected to the connecting terminal.Type: ApplicationFiled: January 31, 2007Publication date: November 29, 2007Applicant: Sanyo Electric Co., Ltd.Inventors: Masaaki Nemoto, Koji Endo, Kikuko Kato, Yasuo Nakahara, Hiroshi Nonoue
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Publication number: 20070228507Abstract: The current invention provides for an electric double layer capacitor which can be manufactured with low manufacturing cost, and an increase of internal resistance due to the damage of a cathode current collector by reflow is inhibited. For this reason, in the current invention, the electric double layer capacitor comprising a cathode 1a, anode 1b, a separator 1c to separate said cathode 1a and anode 1b, electrolytic solution 7 and a container 10 to house said cathode 1a, anode 1b, separator 1c and electrolytic solution 7, wherein said cathode 1a is electrically connected to cathode current collector 2, and said cathode current collector 2 is comprised of alloy of a metal element showing an oxide passivation phenomenon and aluminum.Type: ApplicationFiled: January 31, 2007Publication date: October 4, 2007Applicant: Sanyo Electric Co., Ltd.Inventors: Koji Endo, Yasuo Nakahara, Kikuko Kato, Hiroshi Nonoue
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Publication number: 20070177333Abstract: An electric double layer capacitor comprises an electrode, a current collector, an electrolyte, a separator, a concave-shaped container for accommodating them, and a sealing plate for sealing an opening part of the container, wherein the sealing plate is fitted inside the container.Type: ApplicationFiled: December 12, 2006Publication date: August 2, 2007Applicant: SANYO ELECTRIC CO., LTD.Inventors: Takashi Umemoto, Yasuo Nakahara, Hiroshi Nonoue, Masaaki Nemoto
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Publication number: 20070000775Abstract: An electrochemical device includes a pair of electrodes, an electrolytic solution, and a container for containing the pair of electrodes and the electrolytic solution. The container includes a frame body having concave shape and a sealing plate configured to seal an opening of the frame body, and an electronic device is buried in the frame body or the sealing plate.Type: ApplicationFiled: June 27, 2006Publication date: January 4, 2007Applicant: Sanyo Electric Co., Ltd.Inventors: Yasuo Nakahara, Kikuko Kato, Mamoru Kimoto
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Publication number: 20060291141Abstract: An electrochemical device includes a pair of electrodes at least containing activated carbon powder, a separator interposed between the pair of electrodes, and an electrolytic solution impregnated into the pair of electrodes and the separator. The electrodes and the separator are stacked on a collector. Each of the electrodes includes at least two layers arranged in a thickness direction, and the two layers are made of the activated carbon powder having mutually different average grain sizes. The average grain size of the activated carbon powder in the layer contacting the separator is greater than the average grain size of the activated carbon powder in the layer located on the collector side.Type: ApplicationFiled: June 27, 2006Publication date: December 28, 2006Applicant: Sanyo Electric Co., Ltd.Inventors: Kikuko Kato, Yasuo Nakahara, Mamoru Kimoto
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Patent number: 6281057Abstract: A method is obtained of manufacturing a semiconductor device including a semiconductor layer with high field-effect mobility. According to the semiconductor device manufacturing method, a semiconductor layer is formed on a substrate and then the semiconductor layer is irradiated with high energy beam. Then, a heat treatment is provided under a temperature condition capable of reducing the surface roughness of the semiconductor layer. The radiation of high energy beam toward the semiconductor layer improves the crystalinity of the semiconductor layer and the subsequent heat treatment reduces the surface roughness of the semiconductor layer to enhance the field-effect mobility of the semiconductor layer.Type: GrantFiled: January 9, 1998Date of Patent: August 28, 2001Assignee: Sanyo Electric Co., Ltd.Inventors: Yoichiro Aya, Tomoyuki Nouda, Yasuo Nakahara, Naoya Sotani, Hisashi Abe, Hiroki Hamada
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Publication number: 20010000620Abstract: A thin film transistor (TFT) which may be used as a pixel drive element in an active matrix LCD display includes a pair of side wall spacers adjacent to the opposing side walls of its gate electrode. The side wall spacers provide the gate electrode with a substantially rectangular cross section, such that the gate electrode has a substantially constant thermal conductivity over its area. The TFT has a uniform device characteristic.Type: ApplicationFiled: December 5, 2000Publication date: May 3, 2001Applicant: Sanyo Electric Co., Ltd.Inventors: Satoshi Ishida, Yasuo Nakahara, Hiroyuki Kuriyama, Tsutomu Yamada, Kiyoshi Yoneda, Yasushi Shimogaichi
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Patent number: 6215154Abstract: A thin film transistor (TFT) which may be used as a pixel drive element in an active matrix LCD display includes a pair of side wall spacers adjacent to the opposing side walls of its gate electrode. The side wall spacers provide the gate electrode with a substantially rectangular cross section, such that the gate electrode has a substantially constant thermal conductivity over its area. The TFT has a uniform device characteristic.Type: GrantFiled: February 13, 1998Date of Patent: April 10, 2001Assignees: Sanyo Electric co., Ltd., Sony CorporationInventors: Satoshi Ishida, Yasuo Nakahara, Hiroyuki Kuriyama, Tsutomu Yamada, Kiyoshi Yoneda, Yasushi Shimogaichi
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Patent number: 6133074Abstract: A thin film transistor (TFT) which may be used as a pixel drive element in an active matrix LCD display includes a pair of side wall spacers adjacent to the opposing side walls of its gate electrode. The side wall spacers provide the gate electrode with a substantially rectangular cross section, such that the gate electrode has a substantially constant thermal conductivity over its area. The TFT has a uniform device characteristic.Type: GrantFiled: July 13, 1998Date of Patent: October 17, 2000Assignees: Sanyo Electric Co., Ltd., Sony Corp.Inventors: Satoshi Ishida, Yasuo Nakahara, Hiroyuki Kuriyama, Tsutomu Yamada, Kiyoshi Yoneda, Yasushi Shimogaichi