Patents by Inventor Atsushi Shirasawa
Atsushi Shirasawa 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: 9620817Abstract: The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1): wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —ClH2l—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.Type: GrantFiled: September 9, 2013Date of Patent: April 11, 2017Assignees: NAGOYA INSTITUTE OF TECHNOLOGY, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tsunehisa Hirashita, Shuki Araki, Hirofumi Nakamoto, Atsushi Shirasawa
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Patent number: 9306253Abstract: Provided is an electrolyte solution capable of further increasing the output of a lithium air battery, the electrolyte solution for a lithium air battery having a total bonding strength between Li2O2 is no less than 0.14.Type: GrantFiled: June 15, 2012Date of Patent: April 5, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirofumi Nakamoto, Taishi Shiotsuki, Atsushi Shirasawa, Yushi Suzuki
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Publication number: 20150236377Abstract: The present invention is to provide: a liquid electrolyte for batteries, which has excellent stability to lithium metals; a method for producing the liquid electrolyte; and a lithium battery comprising the liquid electrolyte. Presented is a liquid electrolyte for lithium batteries, wherein the liquid electrolyte comprises a mesoionic compound represented by the following general formula (1): wherein R1 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and R2 is a group represented by any one of the following general formulae (2), (3) and (4): General Formula (2): —C1H21—(OCH2)m—CnH2n+1; General Formula (3): —CxH2x—(CH2OCH2)y—CzH2z+1; and General Formula (4): —CpH2p—(C2H4OCH2)q—CrH2r+1.Type: ApplicationFiled: September 9, 2013Publication date: August 20, 2015Inventors: Tsunehisa Hirashita, Shuki Araki, Hirofumi Nakamoto, Atsushi Shirasawa
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Publication number: 20140212772Abstract: Provided is an electrolyte solution capable of further increasing the output of a lithium air battery, the electrolyte solution for a lithium air battery having a total bonding strength between Li2O2 is no less than 0.14.Type: ApplicationFiled: June 15, 2012Publication date: July 31, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirofumi Nakamoto, Taishi Shiotsuki, Atsushi Shirasawa, Yushi Suzuki
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Publication number: 20130266832Abstract: A battery that includes a battery cell and a case within which the battery cell is housed, and in which a gas that pressurizes the battery cell is filled into the case, also includes a pressure controlling mechanism capable of controlling pressure inside of the case.Type: ApplicationFiled: December 22, 2011Publication date: October 10, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Shirasawa, Shigenori Hama
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Publication number: 20120290224Abstract: A method for determining a cation which is stable to oxygen radical. Specifically, a lithium air cell which includes at least an air electrode, a negative electrode and a non-aqueous electrolyte that is interposed between the air electrode and the negative electrode. The lithium air cell is characterized in that the nonaqueous electrolyte contains an ionic liquid that does not contain atoms having a positive charge larger than that of a hydrogen atom and is composed of cations, which have an average of the charges carried by atoms other that hydrogen atoms of 0 or less, and counter anions of the cations.Type: ApplicationFiled: January 18, 2010Publication date: November 15, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidetaka Nishikoori, Noriaki Nishino, Atsushi Shirasawa, Iwao Nitta, Fuminori Mizuno
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Publication number: 20120208054Abstract: A battery system is provided with: an assembled battery having a plurality of solid-state unit cells; an assembled battery case that houses the assembled battery; a gas that fills an interior of the assembled battery case; a pressing section that pressurizes the unit cells with hydrostatic pressure that is generated in the assembled battery case by the gas; a deformation section that is part of the assembled battery case and that, upon occurrence of an anomaly in the assembled battery case, deforms in reaction to the anomaly; and a sensing section that senses deformation of the deformation section.Type: ApplicationFiled: February 14, 2012Publication date: August 16, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi SHIRASAWA, Hiroshi TERANISHI, Hirotoshi IMAI
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Publication number: 20100116912Abstract: A fuel injector inhibiting adhesion of deposits and simultaneously improving durability by a simple configuration is provided. A fuel injector having a valve body provided with a main space receiving fuel and an injection hole and a needle movably supported at the valve body and having a seal part at its front end, in which needle the movement causes the seal part to separate from or contact an inner surface of the valve body and thereby open or close a fuel passage communicating the main space and the injection hole of the valve body, the fuel injector characterized in that the injection hole of the valve body is covered by an injection hole coating comprised of a material with a lower adsorption and reactivity with oxygen compared with the material of the valve body itself, and the seal part of the needle is covered by a seal part coating comprised of a material higher in liquid-repellency compared with the material of the needle itself and not forming a metal surface.Type: ApplicationFiled: October 30, 2007Publication date: May 13, 2010Inventors: Motonari Yarino, Tomojiro Sugimoto, Shouji Miyazaki, Takehiro Nitoh, Atsushi Shirasawa, Kazuaki Satoh, Eriko Matsumura
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Patent number: 6423668Abstract: A friction material exhibiting a great coefficient of friction, as compared to that of the conventional friction material, which is produced with the use of an organic paper-like substrate. The friction material is composed of the paper-like substrate of a fibrous material, and an inorganic binder with which said substrate is impregnated. When friction is produced, the inorganic binder exhibits friction characteristics so that a great coefficient of friction can be effected, as compared to the cases organic binders such as phenol resin are used.Type: GrantFiled: December 9, 1998Date of Patent: July 23, 2002Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masatsugu Nakanishi, Masataka Kawabata, Atsushi Suzuki, Atsushi Shirasawa
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Patent number: 6154283Abstract: The present invention relates to a method for evaluating a liquid repellent film on parts subjected to liquid repellent treatment, particularly to a method for evaluating the quality of a liquid repellent film comprising a substance absorbing or emitting electromagnetic waves, wherein the transmittance or reflectance ratio of electromagnetic waves, or fluorescence intensity is measured, and the characteristics of the liquid repellent film is evaluated from the graph of the relationship between a film thickness and a contact angle with a liquid having been determined in advance.Type: GrantFiled: September 3, 1998Date of Patent: November 28, 2000Assignee: Toyota Jidosha Kabushiki KaishaInventors: Atsushi Shirasawa, Masatsugu Nakanishi
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Patent number: 5656751Abstract: Disclosed is a dichroic crystal including at least one member selected from the group consisting of phtharocyanine, a phtharocyanine derivative, phtharocyanine with a central metal introduced therein, a phtharocyanine derivative with a central metal introduced therein, and iodine. It is precipitated when the iodine is added to a solution containing the member, and it includes the iodine in a form of I.sub.3.sup.- and I.sub.5.sup.- ions. It not only has a high dichroic property but also superb heat resistance and weatherability, so that it is applicable to suspended particles display devices used in severe environments.Type: GrantFiled: April 17, 1996Date of Patent: August 12, 1997Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiromitsu Tanaka, Hisato Takeuchi, Arimitsu Usuki, Kazuo Tojima, Atsushi Shirasawa, Ai Kobayashi