Patents by Inventor Yasuhisa Yamashita
Yasuhisa Yamashita 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: 9214279Abstract: An ultrafine metal oxide particle dispersion liquid is prepared by mixing an ultrafine titanium-based composite metal oxide particle dispersion liquid prepared by hydrolysis in a microemulsion containing a hydrophobic dispersion medium, water, and a surfactant and an organic metal compound solution for the same titanium-based composite metal oxide at a ratio of 1:1 to 1:30 in terms of the composite metal oxide contained.Type: GrantFiled: March 25, 2010Date of Patent: December 15, 2015Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Yasuhisa Yamashita
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Patent number: 8558683Abstract: A display apparatus for a vehicle includes: a display element; an image generation element for generating a vehicle image, an analog image and an indication image; and a display controller. The analog image includes an indication position and multiple indexes arranged on an upside and downside of the indication position. The indication image shows the current vehicle speed at the indication position. Each index shows a corresponding vehicle speed. Display dimensions of each index are inverse proportion to the corresponding vehicle speed, and a distance between the indication position and each index is proportion to a difference between the current vehicle speed and the corresponding vehicle speed. The display controller controls the display element to display the indication image at the indication position of the analog image.Type: GrantFiled: March 24, 2010Date of Patent: October 15, 2013Assignee: Denso CorporationInventors: Ryoichi Nishikawa, Yasuhisa Yamashita, Hiroki Matsui, Takaaki Muramatsu, Kenichirou Karikomi, Tomoyuki Miyagaki, Hitoshi Sugiyama
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Publication number: 20100253496Abstract: A display apparatus for a vehicle includes: a display element; an image generation element for generating a vehicle image, an analog image and an indication image; and a display controller. The analog image includes an indication position and multiple indexes arranged on an upside and downside of the indication position. The indication image shows the current vehicle speed at the indication position. Each index shows a corresponding vehicle speed. Display dimensions of each index are inverse proportion to the corresponding vehicle speed, and a distance between the indication position and each index is proportion to a difference between the current vehicle speed and the corresponding vehicle speed. The display controller controls the display element to display the indication image at the indication position of the analog image.Type: ApplicationFiled: March 24, 2010Publication date: October 7, 2010Applicant: DENSO CORPORATIONInventors: Ryoichi Nishikawa, Yasuhisa Yamashita, Hiroki Matsui, Takaaki Muramatsu, Kenichirou Karikomi, Tomoyuki Miyagaki, Hitoshi Sugiyama
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Publication number: 20100183803Abstract: An ultrafine metal oxide particle dispersion liquid is prepared by mixing an ultrafine titanium-based composite metal oxide particle dispersion liquid prepared by hydrolysis in a microemulsion containing a hydrophobic dispersion medium, water, and a surfactant and an organic metal compound solution for the same titanium-based composite metal oxide at a ratio of 1:1 to 1:30 in terms of the composite metal oxide contained.Type: ApplicationFiled: March 25, 2010Publication date: July 22, 2010Applicant: MURATA MANUFACTURING CO., LTD.Inventor: Yasuhisa Yamashita
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Publication number: 20050194573Abstract: An ultrafine metal oxide particle dispersion liquid is prepared by mixing an ultrafine titanium-based composite metal oxide particle dispersion liquid prepared by hydrolysis in a microemulsion containing a hydrophobic dispersion medium, water, and a surfactant and an organic metal compound solution for the same titanium-based composite metal oxide at a ratio of 1:1 to 1:30 in terms of the composite metal oxide contained.Type: ApplicationFiled: February 9, 2005Publication date: September 8, 2005Inventor: Yasuhisa Yamashita
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Patent number: 6409984Abstract: The invention provides a spinel-type lithium manganese complex oxide for use as a cathode active material of a lithium secondary battery, which is characterized in that said spinel-type lithium manganese complex oxide has an average particle diameter between about 1 and 5 micrometers and a specific surface area between about 2 and 10 m2/g. The invention also provides a process for producing the spinel-type lithium manganese complex oxide comprises the steps of l)atomizing and pyrolyzing an aqueous or alcohol solution of compounds containing metallic salts constituting a spinel-type lithium manganese complex oxide to obtain said complex oxide, and 2) annealing said spinel-type lithium manganese complex oxide to increase the average particle diameter thereof to between about 1 and 5 micrometers and adjust the specific surface area thereof to between about 2 and 10 m2/g.Type: GrantFiled: June 17, 1997Date of Patent: June 25, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Koji Hattori, Yasuhisa Yamashita
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Patent number: 6270924Abstract: The invention provides a lithium secondary battery, comprising a cathode having a spinel-structured lithium-manganese complex oxide as the active material, which is characterized in that the particles of said spinel-structured lithium-manganese complex oxide are hollow, spherical secondary particles formed by sintering of primary particles, and said secondary particles have a mean particle size of from about 1 to 5 micrometer and a specific surface area of from about 2 to 10 m2/g. The lithium secondary battery has a high capacity and excellent charge-discharge cycle characteristics.Type: GrantFiled: July 16, 1997Date of Patent: August 7, 2001Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasuhisa Yamashita, Koji Hattori
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Patent number: 6270926Abstract: A lithium secondary battery includes an anode, a cathode and a separator containing non-aqueous electrolytic solution or solid-state electrolyte, interposed between the anode and the cathode. The anode comprises, as an active material, lithium metal, lithium alloy or a material capable of absorbing and desorbing lithium ions. The cathode comprises spinel-structured lithium-manganese complex oxide as an active material. The spinel-structured lithium-manganese complex oxide is in the form of hollow spherical particles formed by sintering single crystal particles.Type: GrantFiled: January 7, 1998Date of Patent: August 7, 2001Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasuhisa Yamashita, Koji Hattori
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Patent number: 6255020Abstract: The invention provides a lithium secondary battery comprising a cathode having a lithium cobalt complex oxide or a lithium nickel complex oxide as a cathode active material, which is characterized in that said lithium cobalt complex oxide is in the form of hollow, spherical sinters of particles, and said sinters have a mean particle diameter of from about 1 to 5 micrometers and a specific surface area of from about 2 to 10 m2/g. The lithium secondary battery has high capacity and excellent charge-discharge cycle characteristics.Type: GrantFiled: August 19, 1997Date of Patent: July 3, 2001Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasuhisa Yamashita, Koji Hattori, Yukio Sakabe
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Patent number: 6187282Abstract: A method of manufacturing a lithium complex oxide involves the steps of 1) atomizing and pyrolyzing an aqueous or alcohol solution of metallic salt compounds constituting a lithium cobalt complex oxide or a lithium nickel complex oxide, and 2) annealing said lithium cobalt complex oxide or said lithium nickel complex oxide to increase the average particle diameter thereof to between about 1 and 5 micrometers and adjust the specific surface area thereof to between about 2 and 10 m2/g. The lithium complex oxide provided by this method is homogeneous and enables a long cycle life to withstand repeated charging and discharging and a high level of storage stability to be realized when used as an cathode active material of a secondary lithium battery.Type: GrantFiled: August 13, 1997Date of Patent: February 13, 2001Assignee: Murata Manufacturing Co., Ltd.Inventors: Koji Hattori, Yasuhisa Yamashita, Yukio Sakabe
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Patent number: 5980786Abstract: A method for producing a cathode active material for a lithium secondary battery having a large initial capacity and excellent in the charging-discharging cycle characteristics, while restraining the generation of NO.sub.2, is provided. In the production method of a cathode active material for a lithium secondary battery made up of a complex oxide containing at least lithium, after adding a material generating oxygen on spray pyrolysis, such as nitric acid, hydrogen peroxide, etc., to an aqueous or alcohol solution of the organic acid salts of metal elements constituting the complex oxide, the mixture is subjected to spray pyrolysis to form a complex oxide, and the complex oxide is heat-treated. As the complex oxides, there are a lithium manganese complex oxide, a lithium cobalt complex oxide, a lithium nickel complex oxide, etc.Type: GrantFiled: April 23, 1998Date of Patent: November 9, 1999Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasuhisa Yamashita, Koji Hattori
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Patent number: 5293033Abstract: An optical reading apparatus for optically reading information of a symbol on an article is comprised of a bar code reading circuit for emitting laser beams to a bar code printed on a commodity passing in front of the bar code reading circuit and for reading the information of the bar code from the laser beams reflected at the bar code. In the optical reading apparatus the bar code reading circuit includes a plurality of bar code readers which are put toward a path through which the commodity is moved so that read areas formed by the bar code readers contain the article moving path at different angles. A priority decision circuit is provided for applying a selective operation to the data read by the bar code readers.Type: GrantFiled: February 5, 1992Date of Patent: March 8, 1994Assignee: Tokyo Electric Co., Ltd.Inventor: Yasuhisa Yamashita
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Patent number: 5041796Abstract: The amplifier employs an FET having a flat characteristic of mutual conductance versus the potential gap between the gate and the source of the FET. By employing this FET, the amplifier achieves a sufficiently flat gain characteristic in which the gain deviation is very small throughout the range of the objective frequencies.Type: GrantFiled: March 26, 1990Date of Patent: August 20, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shutaro Nambu, Yasuhisa Yamashita, Kazuhide Goda