Patents by Inventor Mitsuaki Ishimaru
Mitsuaki Ishimaru 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: 9037362Abstract: Disclosed is a shift range switching apparatus of an automatic transmission which can improve the durability over the conventional shift range switching apparatus. An ECU is operative to rotate an actuator in a predetermined direction (Step S2) in the state of the automatic transmission switched to a predetermined shift range (Step S1), and thereafter the actuator is deenergized (Step S3). The reference position of the actuator corresponding to the predetermined shift range is detected (Step S5) in accordance with the fluctuation of the count value counted by an encoder when the actuator is deenergized (Step S4).Type: GrantFiled: April 15, 2010Date of Patent: May 19, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keisuke Sekiya, Koki Ueno, Mitsuaki Ishimaru
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Patent number: 8770369Abstract: It is provided a vehicle shift control device electrically switching a shift position between a parking position and a non-parking position, the vehicle being capable of switching a vehicle state among a first state, a second state and a third state, when an operation for switching the vehicle state is performed in the first state, if a vehicle speed is a predetermined speed or less, switching is executed to the parking position and, after completion of the switching, the vehicle state is switched to the third state, whereas when plural-times of the operations are performed successively during the vehicle running, the vehicle state is compulsorily switched to the second state, and when at least one operation of the plural-times of the operations is performed if the vehicle speed is the predetermined speed or less, switching to the parking position is executed prior to switching to the second state.Type: GrantFiled: May 11, 2010Date of Patent: July 8, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koki Ueno, Keisuke Sekiya, Mitsuaki Ishimaru
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Patent number: 8735335Abstract: A base oil for hydraulic oil suitably used for hydraulic systems having filters of which micropore diameter is 50 ?m or less is disclosed. The disclosure also provides a hydraulic oil composition using the above base oil, especially a hydraulic oil composition suitably used for such as tractors, transmissions, and common systems thereof having the hydraulic systems. The base oil has mineral oil, and the mineral oil is defined by kinematic viscosity at 100° C.: 1.5˜6 mm2/s, pour-point: ?10° C. or less, viscosity index: 100 or more, % CP: 70 or more, % CA: 2 or less, and aniline point: 106° C. or more, and the mineral base oil is treated by catalytic dewaxing process and/or contains tertiary carbon atoms at a ratio of 7.4% or more to the total carbon atoms.Type: GrantFiled: March 12, 2012Date of Patent: May 27, 2014Assignee: Nippon Oil CorporationInventors: Shinichi Shirahama, Tooru Aoki, Mitsuaki Ishimaru
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Publication number: 20130072350Abstract: It is provided a vehicle shift control device electrically switching a shift position between a parking position and a non-parking position, the vehicle being capable of switching a vehicle state among a first state, a second state and a third state, when an operation for switching the vehicle state is performed in the first state, if a vehicle speed is a predetermined speed or less, switching is executed to the parking position and, after completion of the switching, the vehicle state is switched to the third state, whereas when plural-times of the operations are performed successively during the vehicle running, the vehicle state is compulsorily switched to the second state, and when at least one operation of the plural-times of the operations is performed if the vehicle speed is the predetermined speed or less, switching to the parking position is executed prior to switching to the second state.Type: ApplicationFiled: May 11, 2010Publication date: March 21, 2013Inventors: Koki Ueno, Keisuke Sekiya, Mitsuaki Ishimaru
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Publication number: 20130024079Abstract: Disclosed is a shift range switching apparatus of an automatic transmission which can improve the durability over the conventional shift range switching apparatus. An ECU is operative to rotate an actuator in a predetermined direction (Step S2) in the state of the automatic transmission switched to a predetermined shift range (Step S1), and thereafter the actuator is deenergized (Step S3). The reference position of the actuator corresponding to the predetermined shift range is detected (Step S5) in accordance with the fluctuation of the count value counted by an encoder when the actuator is deenergized (Step S4).Type: ApplicationFiled: April 15, 2010Publication date: January 24, 2013Inventors: Keisuke Sekiya, Koki Ueno, Mitsuaki Ishimaru
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Publication number: 20120172268Abstract: A base oil for hydraulic oil suitably used for hydraulic systems having filters of which micropore diameter is 50 ?m or less is disclosed. The disclosure also provides a hydraulic oil composition using the above base oil, especially a hydraulic oil composition suitably used for such as tractors, transmissions, and common systems thereof having the hydraulic systems. The base oil has mineral oil, and the mineral oil is defined by kinematic viscosity at 100° C.: 1.5˜6 mm2/s, pour-point: ?10° C. or less, viscosity index: 100 or more, % CP: 70 or more, % CA: 2 or less, and aniline point: 106° C. or more, and the mineral base oil is treated by catalytic dewaxing process and/or contains tertiary carbon atoms at a ratio of 7.4% or more to the total carbon atoms.Type: ApplicationFiled: March 12, 2012Publication date: July 5, 2012Applicant: NIPPON OIL CORPORATIONInventors: Shinichi SHIRAHAMA, Tooru AOKI, Mitsuaki ISHIMARU
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Publication number: 20100144571Abstract: The object of the present invention is to provide a base oil for hydraulic oil suitably used for hydraulic systems having filters of which micropore diameter is 50 ?m or less, which is capable to improve the decrease of flow in a hydraulic pump at low temperature like ?30° C. or less and capable to normally operate the hydraulic systems. The invention also provides a hydraulic oil composition using the above base oil, especially a hydraulic oil composition suitably used for such as tractors, transmissions, and common systems thereof having the hydraulic systems. In order to achieve the object, provided is a base oil for hydraulic oil comprising mineral oil, wherein the mineral oil is defined by kinematic viscosity at 100° C.: 1.5˜6 mm2/s, pour-point: ?10° C. or less, viscosity index: 100 or more, % CP: 70 or more, % CA: 2 or less, and aniline point: 106° C. or more; and wherein, the mineral base oil is treated by catalytic dewaxing process and/or contains tertiary carbon atoms at a ratio of 7.Type: ApplicationFiled: June 27, 2006Publication date: June 10, 2010Inventors: Shinichi Shirahama, Tooru Aoki, Mitsuaki Ishimaru
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Patent number: 5663125Abstract: A lubricating oil for two-cycle engines, which comprises a polyoxyalkylene glycol derivative represented by the following formula as a base oil, can be used to lubricate bearing portions and frictional portions of an two-cycle engine, so that the engine can be remarkably improved in generation of smoke, starting performance, cleanliness to prevent its exhaust system from clogging with carbon, cleanliness at high- or low temperature, and anti-seizure performance.Type: GrantFiled: July 22, 1996Date of Patent: September 2, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Mitsuaki Ishimaru, Mineo Kagaya, Noboru Ishida
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Patent number: 5543081Abstract: A method of making a novel lubricant additive comprising a boric acid modified aminoamide compound is disclosed. A lubricating oil composition incorporating the modified aminoamide compound is also disclosed, which exhibits enhanced high-temperature cleanliness when used particularly for two stroke cycle engines.Type: GrantFiled: October 16, 1992Date of Patent: August 6, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Noboru Ishida, Mitsuaki Ishimaru, Mineo Kagaya
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Patent number: 5411672Abstract: The lubricating oil composition of the present invention comprising an ester mixture as the main ingredient consisting of (A) 60-95% by weight of an ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms, and (B) 5-40% by weight of a complex ester of a hindered alcohol with a straight-chain saturated fatty acid having 8-12 carbon atoms and also with a dibasic acid having 20-50 carbon atoms, the composition having excellent performances such as biodegradability, high-temperature engine cleanliness, lubricity and piston seizure preventiveness which are conductive to environmental protection.Type: GrantFiled: November 10, 1993Date of Patent: May 2, 1995Assignee: Nippon Oil Co., Ltd.Inventors: Mineo Kagaya, Mitsuaki Ishimaru, Hiroaki Ishii
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Patent number: 4994196Abstract: A two-cycle engine oil composition comprising:(I) 100 parts by weight of a base oil composed of (A) 20 to 80% by weight of a copolymer of an .alpha.-olefin with an ester of a dicarboxylic acid, said copolymer having a kinematic viscosity of 20 to 50 cSt at 100.degree. C., and (B) 80 to 20% by weight of an ester of pentaerythritol with a fatty acid, said ester having a kinematic viscosity of 4 to 20 cSt at 100.degree. C., and(II) 0.4 to 6 parts by weight of calcium phenate incorporated as an indispensable ingredient in the base oil.Type: GrantFiled: October 13, 1989Date of Patent: February 19, 1991Assignee: Nippon Oil Co., Ltd.Inventors: Mineo Kagaya, Mitsuaki Ishimaru