Patents by Inventor Masatoshi Sakai
Masatoshi Sakai 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: 11267387Abstract: A work vehicle is disclosed that includes a front guard that is provided at a front end portion of a traveling vehicle body and protects the traveling vehicle body, and an auxiliary device that can be attached to and removed from the front guard. The front guard is provided with an attachment portion to which the auxiliary device can be attached and from which the auxiliary device can be removed.Type: GrantFiled: May 13, 2019Date of Patent: March 8, 2022Assignee: Kubota CorporationInventors: Yumi Kushimoto, Masatoshi Sakai, Junichi Fujiwara, Yusuke Morita
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Patent number: 11148530Abstract: A multi-purpose vehicle is disclosed that includes a mode change switch for operating a travel mode of a vehicle body and a mode control device for switching the travel mode of the vehicle body in response to an operation of the mode change switch. The mode control device switches the travel mode of the vehicle body between a two-wheel engine driving mode in which only an engine is driven, a two-wheel motor driving mode in which only a motor is driven, a four-wheel hybrid driving mode in which both of the engine and the motor are driven, and an OFF-mode in which none of the engine and the motor is driven.Type: GrantFiled: December 8, 2017Date of Patent: October 19, 2021Assignee: Kubota CorporationInventor: Masatoshi Sakai
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Publication number: 20200181452Abstract: Provided are a coating composition or the like which is highly wettable to a plastic substrate and which can form a hardcoat layer having high adhesiveness to the substrate and favorable appearance on the plastic substrate. A coating composition for forming a hardcoat layer for a plastic substrate including (A) an organosilicon compound represented by general formula: R1R2aSi(OR3)3-a(R1 to R3 each represent a hydrocarbon group or the like, and a is 0 or 1), a hydrolysate thereof, etc, (B) silica-based fine particles, (C) a curing agent including polycarboxylic acid, etc, and a cyanamide derivative compound, (D) a leveling agent, and (E) a solvent including respective predetermined amounts of water and an organic solvent.Type: ApplicationFiled: August 28, 2018Publication date: June 11, 2020Inventors: Masatoshi Sakai, Takehiro Shimizu
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Patent number: 10639983Abstract: A work vehicle includes an assist motor that is located opposite an engine with respect to a continuously variable transmission device. The assist motor has an output shaft that extends coaxially with a drive shaft of the continuously variable transmission device and is interlocked with the drive shaft. A motor support platform that supports the assist motor protrudes more outward than the continuously variable transmission device does in a lateral direction relative to a vehicle body. The motor support platform includes a slide movement mechanism, and the slide movement mechanism is configured to change the position at which the assist motor is attached, relative to the continuously variable transmission device, axially of the drive shaft, between a connected position and a disconnected position of the drive shaft and the output shaft.Type: GrantFiled: December 15, 2017Date of Patent: May 5, 2020Assignee: Kubota CorporationInventors: Go Takaki, Takahito Matsumori, Shunsuke Miyashita, Yukifumi Yamanaka, Masatoshi Sakai
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Patent number: 10538157Abstract: Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.Type: GrantFiled: December 18, 2017Date of Patent: January 21, 2020Assignee: Kubota CorporationInventors: Yoshinori Oyama, Takeshi Satozono, Rei Tokuda, Kazuyuki Tashiro, Masatoshi Sakai, Yuki Nakaoka
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Publication number: 20190359111Abstract: A work vehicle is disclosed that includes a front guard that is provided at a front end portion of a traveling vehicle body and protects the traveling vehicle body, and an auxiliary device that can be attached to and removed from the front guard. The front guard is provided with an attachment portion to which the auxiliary device can be attached and from which the auxiliary device can be removed.Type: ApplicationFiled: May 13, 2019Publication date: November 28, 2019Inventors: Yumi Kushimoto, Masatoshi Sakai, Junichi Fujiwara, Yusuke Morita
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Patent number: 10232699Abstract: Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.Type: GrantFiled: December 5, 2016Date of Patent: March 19, 2019Assignee: Kubota CorporationInventors: Yoshinori Oyama, Takeshi Satozono, Rei Tokuda, Kazuyuki Tashiro, Masatoshi Sakai, Yuki Nakaoka
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Publication number: 20180312061Abstract: A multi-purpose vehicle is disclosed that includes a mode change switch for operating a travel mode of a vehicle body and a mode control device for switching the travel mode of the vehicle body in response to an operation of the mode change switch. The mode control device switches the travel mode of the vehicle body between a two-wheel engine driving mode in which only an engine is driven, a two-wheel motor driving mode in which only a motor is driven, a four-wheel hybrid driving mode in which both of the engine and the motor are driven, and an OFF-mode in which none of the engine and the motor is driven.Type: ApplicationFiled: December 8, 2017Publication date: November 1, 2018Inventor: Masatoshi Sakai
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Patent number: 10112475Abstract: A utility vehicle includes: a travel unit having a left-right pair of front travel apparatuses and a left-right pair of rear travel apparatuses; an engine capable of driving first travel apparatuses being one of the pair of front travel apparatuses and the pair of rear travel apparatuses; a motor capable of driving second travel apparatuses being the other of the pair of front travel apparatuses and the pair of rear travel apparatuses; and a control apparatus capable of switching between an engine two-wheel drive mode in which only the engine is driven, a motor two-wheel drive mode in which only the motor is driven, and a hybrid four-wheel drive mode in which the engine and the motor are both driven.Type: GrantFiled: November 18, 2016Date of Patent: October 30, 2018Assignee: Kubota CorporationInventors: Masatoshi Sakai, Hiroki Bessho, Kazuyuki Tashiro
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Publication number: 20180264928Abstract: A work vehicle includes an assist motor that is located opposite an engine with respect to a continuously variable transmission device. The assist motor has an output shaft that extends coaxially with a drive shaft of the continuously variable transmission device and is interlocked with the drive shaft. A motor support platform that supports the assist motor protrudes more outward than the continuously variable transmission device does in a lateral direction relative to a vehicle body. The motor support platform includes a slide movement mechanism, and the slide movement mechanism is configured to change the position at which the assist motor is attached, relative to the continuously variable transmission device, axially of the drive shaft, between a connected position and a disconnected position of the drive shaft and the output shaft.Type: ApplicationFiled: December 15, 2017Publication date: September 20, 2018Inventors: Go Takaki, Takahito Matsumori, Shunsuke Miyashita, Yukifumi Yamanaka, Masatoshi Sakai
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Publication number: 20180105032Abstract: Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.Type: ApplicationFiled: December 18, 2017Publication date: April 19, 2018Inventors: Yoshinori Oyama, Takeshi Satozono, Rei Tokuda, Kazuyuki Tashiro, Masatoshi Sakai, Yuki Nakaoka
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Publication number: 20170174069Abstract: Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.Type: ApplicationFiled: December 5, 2016Publication date: June 22, 2017Inventors: Yoshinori Oyama, Takeshi Satozono, Rei Tokuda, Kazuyuki Tashiro, Masatoshi Sakai, Yuki Nakaoka
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Publication number: 20170158044Abstract: A utility vehicle includes: a travel unit having a left-right pair of front travel apparatuses and a left-right pair of rear travel apparatuses; an engine capable of driving first travel apparatuses being one of the pair of front travel apparatuses and the pair of rear travel apparatuses; a motor capable of driving second travel apparatuses being the other of the pair of front travel apparatuses and the pair of rear travel apparatuses; and a control apparatus capable of switching between an engine two-wheel drive mode in which only the engine is driven, a motor two-wheel drive mode in which only the motor is driven, and a hybrid four-wheel drive mode in which the engine and the motor are both driven.Type: ApplicationFiled: November 18, 2016Publication date: June 8, 2017Inventors: Masatoshi Sakai, Hiroki Bessho, Kazuyuki Tashiro
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Patent number: 8859212Abstract: Provided is a technique of extracting a component in a food from the food by using a reducing agent that is inexpensive and has a mild reducing action. A component in a food is extracted by mixing the food with an extractant containing a sulfite. In addition, the resultant food extract is brought into contact with a specific antibody that specifically recognizes a substance included in a specified ingredient of interest for inspection, to thereby inspect the presence or absence and/or the amount of a specified ingredient in a food by utilizing an immunological measurement method. Further provided is a food inspection kit for inspection of the presence or absence and/or the amount of a specified ingredient in a food, including: (1) an extractant and a sulfite to be added to the extractant, or an extractant including a sulfite added; and (2) an antibody that specifically recognizes a substance included in a specified ingredient of interest for inspection.Type: GrantFiled: November 28, 2008Date of Patent: October 14, 2014Assignee: Morinaga & Co., Ltd.Inventors: Yuriko Oyama, Tsutomu Honjoh, Masatoshi Sakai, Eriko Watanabe, Kaori Itoh, Rieko Tsuruma
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Publication number: 20100304499Abstract: Provided is a technique of extracting a component in a food from the food by using a reducing agent that is inexpensive and has a mild reducing action. A component in a food is extracted by mixing the food with an extractant containing a sulfite. In addition, the resultant food extract is brought into contact with a specific antibody that specifically recognizes a substance included in a specified ingredient of interest for inspection, to thereby inspect the presence or absence and/or the amount of a specified ingredient in a food by utilizing an immunological measurement method. Further provided is a food inspection kit for inspection of the presence or absence and/or the amount of a specified ingredient in a food, including: (1) an extractant and a sulfite to be added to the extractant, or an extractant including a sulfite added; and (2) an antibody that specifically recognizes a substance included in a specified ingredient of interest for inspection.Type: ApplicationFiled: November 28, 2008Publication date: December 2, 2010Inventors: Yuriko Oyama, Tsutomu Honjoh, Masatoshi Sakai, Eriko Watanabe, Kaori Itoh, Rieko Tsuruma
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Patent number: 7829327Abstract: An optical waveguide type antibody chip includes a transparent substrate, an incident-side optical element and an emitting-side optical element placed at a distance from each other on a primary face of the substrate, a water repellent resin film formed on the primary face of the substrate including an optical waveguide layer formed between the optical elements, the water repellent resin film includes a reaction hole having exposed the optical waveguide layer on its bottom and a frame-shaped trench surrounding the reaction hole, a rectangular frame-shaped cell wall which is fixed in the trench of the water repellent resin film and which forms a cell capable of infusion and discharge of a specimen solution together with the reaction hole, and an antibody immobilization layer formed on the bottom of the reaction hole, the surface of the antibody immobilization layer being masked with at least a buffer agent and a salt.Type: GrantFiled: March 13, 2008Date of Patent: November 9, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Ikuo Uematsu, Masatoshi Sakai, Shingo Kasai
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Publication number: 20080227126Abstract: An optical waveguide type antibody chip includes a transparent substrate, an incident-side optical element and an emitting-side optical element placed at a distance from each other on a primary face of the substrate, a water repellent resin film formed on the primary face of the substrate including an optical waveguide layer formed between the optical elements, the water repellent resin film includes a reaction hole having exposed the optical waveguide layer on its bottom and a frame-shaped trench surrounding the reaction hole, a rectangular frame-shaped cell wall which is fixed in the trench of the water repellent resin film and which forms a cell capable of infusion and discharge of a specimen solution together with the reaction hole, and an antibody immobilization layer formed on the bottom of the reaction hole, the surface of the antibody immobilization layer being masked with at least a buffer agent and a salt.Type: ApplicationFiled: March 13, 2008Publication date: September 18, 2008Inventors: Ikuo Uematsu, Masatoshi Sakai, Shingo Kasai
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Publication number: 20070237701Abstract: [PROBLEMS] To provide a silica sol and the method of producing the silica sol, wherein the silica sol is suitable for use as a material for, e.g., an abrasive material for electronic materials, silicon wafers or the like which are required to have a high purity, has excellent sol stability, can hence be easily made to have an increased silica concentration, and can be regulated so as to have a silica concentration equal to or higher than that of silica sols produced from water glass. [MEANS FOR SOLVING PROBLEMS] The silica sol comprises water and fine silica particles dispersed therein, and wherein the fine silica particles have a secondary-particle diameter of 10-1,000 nm, a metal impurity content of 1 ppm or lower, and a silica concentration of 10-50 wt. %. Also provided is a process for producing a stable silica sol comprising the following steps (a) and (b). (a) A first step in which a hydrolyzable silicon compound is hydrolyzed and condensation-polymerized to produce a silica sol.Type: ApplicationFiled: January 18, 2005Publication date: October 11, 2007Inventors: Yasuhiro Yamakawa, Yoshiaki Tomoda, Keiji Toyama, Masatoshi Sakai
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Publication number: 20050158793Abstract: This invention provides a method wherein a protein sparingly soluble in water, or a protein in a hardly extractable state, is detected sharply and easily in subsequent immunoreaction while high efficiency of extraction from a sample is maintained. Disclosed is a highly sensitive and easy immunoassay characterized in that a water-sparingly-soluble protein in a sample, or a protein in a hardly extractable state, is extracted/solubilized with an aqueous solvent containing an ionic surfactant at relatively high concentration, and then the protein in the extract is detected directly by an antibody raised against the protein previously denatured with the ionic surfactant.Type: ApplicationFiled: March 3, 2004Publication date: July 21, 2005Inventors: Shiroo Muraoka, Yumiko Watanabe, Masatoshi Sakai, Tsutomu Honjoh
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Patent number: 6750257Abstract: The present invention provides the colloidal silica slurry which does not have a bad influence, such as corrosion, to a silicon wafer and wiring material on a silicon wafer and inhibits growth of microbes, and whereof preserving stability is high because stability of particle diameters of a colloidal particle is superior and using for a long period continuously is possible. For providing the above, the colloidal silica slurry wherein hydrogen peroxide from 5 to 100 ppm is added.Type: GrantFiled: January 15, 2001Date of Patent: June 15, 2004Assignee: Fuso Chemical, Ltd.Inventors: Shigetoyo Matsumura, Yukio Okada, Tatsuo Manaki, Keiji Toyama, Masatoshi Sakai