Patents by Inventor Akira Isogai
Akira Isogai 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: 9290178Abstract: A driving support system detects a target area ahead of the vehicle, a position or a moving direction, etc. of an object such as a pedestrian or another vehicle by using a camera or radar, as well as determines a probability of collision between the own vehicle and the object based on the position, etc. of the object, and performs a driving support for avoiding the collision when the probability of the collision is high. Further, a sensitivity of determination is set high when the object remains in the target area, or when the object is moving towards the target area, while the sensitivity is set low when the object is not present in the target area, or the object is moving away from the target area.Type: GrantFiled: March 28, 2014Date of Patent: March 22, 2016Assignee: DENSO CORPORATIONInventors: Taku Sakima, Akira Isogai
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Publication number: 20160074305Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) and the specific cellulose fibers (A), (A?) and (A?) are used with appropriate selection according to uses of a cosmetic composition, a gel-like composition and a spray composition. Therefore, in case where the composition is used as the cosmetic composition, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics is obtained. Additionally, in case where the composition is used as a gel-like composition, gel-state can be kept without separation or water release. Furthermore, in case where the composition is used as a spray composition, since it is possible to time-dependently keep stable gel state even if functional additives such as electrolytes, ionic substances, etc.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira ISOGAI, Hideyuki SUMI, Yousuke GOI
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Publication number: 20160074306Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) and the specific cellulose fibers (A), (A?) and (A?) are used with appropriate selection according to uses of a cosmetic composition, a gel-like composition and a spray composition. Therefore, in case where the composition is used as the cosmetic composition, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics is obtained. Additionally, in case where the composition is used as a gel-like composition, gel-state can be kept without separation or water release. Furthermore, in case where the composition is used as a spray composition, since it is possible to time-dependently keep stable gel state even if functional additives such as electrolytes, ionic substances, etc.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira ISOGAI, Hideyuki SUMI, Yousuke GOI
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Patent number: 9248090Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) which are selected according to uses of a cosmetic composition, a gel-like composition and a spray composition. By using the composition of the present invention, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics; a gel-like composition wherein gel-state can be kept without separation or water release; and a spray composition wherein various functional additives which is necessary for the use is mixed without any problem can be obtained.Type: GrantFiled: January 22, 2010Date of Patent: February 2, 2016Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
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Patent number: 9243128Abstract: A composite material of the invention is a mixture of cellulose microfibers having a carboxyl group content of 0.1 to 3 mmol/g and a moldable polymeric material selected from the group consisting of a biomass-derived polymer and a petroleum-derived polymer. The biomass-derived polymer is preferably polylactic acid or pulp. The cellulose microfibers are preferably present in an amount of 0.01% to 60% by mass. Another composite material of the invention is a mixture of cellulose composite microfibers and a moldable resin, the cellulose composite microfibers being obtained by adsorbing a surfactant onto cellulose microfibers having a carboxyl group content of 0.1 to 3 mmol/g.Type: GrantFiled: December 10, 2010Date of Patent: January 26, 2016Assignee: KAO CORPORATIONInventors: Yoshiaki Kumamoto, Kenta Mukai, Hironobu Kawajiri, Akira Takenaka, Taiki Yoshino, Akira Isogai, Motoi Konishi, Tetsuji Kito
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Patent number: 9150223Abstract: A collision mitigation apparatus includes an object detecting section for detecting a collision object present in front of an own vehicle on which the collision mitigation apparatus is mounted, a drive assisting section that performs drive assist for avoiding a collision between the collision object detected by the object detecting section and the own vehicle, or mitigate damage to the own vehicle due to the collision, a reliability determining section for determining reliability of detection result of the object detecting section, and a timing setting section for setting start timing to start the drive assist by the drive assisting section in accordance with the reliability determined by the reliability determining section.Type: GrantFiled: May 13, 2014Date of Patent: October 6, 2015Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki KaishaInventors: Akitoshi Minemura, Norio Tsuchida, Akira Isogai, Jun Tsuchida, Masayuki Shimizu
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Patent number: 9103065Abstract: The present invention provides a hydrophilized cellulose fiber producing method, comprising oxidizing cellulose fibers in a reaction solution containing a N-oxyl compound, an oxidizing agent, and a co-catalyst and oxidizing other cellulose fibers using the reaction solution again. The present invention relates to a hydrophilized cellulose fiber producing method, comprising the steps of: (1a) oxidizing cellulose fibers in a reaction solution containing a N-oxyl compound, an oxidizing agent, and sodium sulfate to provide oxidized cellulose fibers; and (1b) separating the obtained oxidized cellulose fibers from the reaction solution, and then adding other additional cellulose fibers and oxidizing agent to the reaction solution to oxidize the cellulose fibers again to provide oxidized cellulose fibers.Type: GrantFiled: September 11, 2012Date of Patent: August 11, 2015Assignee: GUNZE LIMITEDInventors: Chiaki Tanaka, Yoshinari Yui, Akira Isogai
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Publication number: 20150093560Abstract: A porous body that contains cellulose nanofibers having very thin fiber diameters and high hydrophilicity, and has a large specific surface area, and to provide a method of producing the porous body simply with low cost. A method of producing a porous cellulose comprises a process of lyophilizing a mixed liquid containing cellulose nanofibers and a dispersion medium, wherein the dispersion medium is a mixed dispersion medium of water and an organic solvent dissolving in water, a concentration of the organic solvent in the mixed dispersion medium is 2 to 40 mass %, and a solid content concentration of the cellulose nanofibers in the mixed liquid is 0.001 to 5 mass %.Type: ApplicationFiled: May 15, 2013Publication date: April 2, 2015Applicants: THE UNIVERSITY OF TOKYO, HOKUETSU KISHU PAPER CO., LTD.Inventors: Junji Nemoto, Toshihiko Soyama, Akira Isogai, Tsuguyuki Saito
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Patent number: 8992728Abstract: The cellulose nanofiber production method of the present invention comprises an oxidation treatment step for oxidizing native cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent that oxidizes aldehyde groups, and a dispersion step for dispersing the native cellulose in a medium following the oxidation treatment step. According to the production method of the present invention, a cellulose nanofiber is provided that has long fibers and demonstrates high strength.Type: GrantFiled: November 26, 2008Date of Patent: March 31, 2015Assignee: The University of TokyoInventors: Akira Isogai, Tsuguyuki Saito
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Publication number: 20150075406Abstract: The object of the present invention is to provide a porous body having fluid permeance, which contains cellulose-based nanofibers having an extremely thin fiber diameter and high hydrophilicity, and to manufacture a porous body at low cost. The porous body according to the present invention is a porous body in which nanofibers are entangled to form net-like structural bodies in pores of a porous support having many pores that are connecting with one another, wherein the nanofibers are cellulose-based nanofibers, and have a number average fiber diameter of from 1 to 100 nm.Type: ApplicationFiled: February 15, 2012Publication date: March 19, 2015Inventors: Junji Nemoto, Toshihiko Soyama, Tsuguyuki Saito, Akira Isogai
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Publication number: 20140343750Abstract: A collision mitigation apparatus includes an object detecting section for detecting a collision object present in front of an own vehicle on which the collision mitigation apparatus is mounted, a drive assisting section that performs drive assist for avoiding a collision between the collision object detected by the object detecting section and the own vehicle, or mitigate damage to the own vehicle due to the collision, a reliability determining section for determining reliability of detection result of the object detecting section, and a timing setting section for setting start timing to start the drive assist by the drive assisting section in accordance with the reliability determined by the reliability determining section.Type: ApplicationFiled: May 13, 2014Publication date: November 20, 2014Applicant: DENSO CORPORATIONInventors: Akitoshi Minemura, Norio Tsuchida, Akira Isogai
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Publication number: 20140324330Abstract: A collision determination device is mounted to an own vehicle and determines a probability of a collision with a moving object. The collision determination device determines whether or not an own vehicle will collide with a moving object that is detected within a captured image. The collision determination device determines whether or not the moving object is in a shielded state where at least a portion of the moving object is hidden behind another object or the moving object appears from behind another object. The collision determination device sets an amount of time required for the collision determining means to complete a determination related to the collision to a shorter amount of time when the moving object is in the shielded state, compared to when the moving object is not in the shielded state.Type: ApplicationFiled: April 23, 2014Publication date: October 30, 2014Applicant: DENSO CORPORATIONInventors: Akitoshi Minemura, Akira Isogai, Yoshihisa Ogata
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Patent number: 8865886Abstract: An effluent produced in oxidation of a cellulosic material with an oxidizing agent in the presence of an N-oxyl compound and a bromide and/or iodide is deionized by electrodialysis to an inorganic salt concentration of less than 0.4%, whereby the N-oxyl compound in the effluent is concentrated and recovered. The N-oxyl compound thus recovered can be reused in oxidation of a cellulosic material. Preferably, the effluent is subjected to reduction treatment and ion exchange resin treatment prior to the electrodialysis.Type: GrantFiled: February 16, 2010Date of Patent: October 21, 2014Assignee: Nippon Paper Industries Co., Ltd.Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20140292502Abstract: A driving support system detects a target area ahead of the vehicle, a position or a moving direction, etc. of an object such as a pedestrian or another vehicle by using a camera or radar, as well as determines a probability of collision between the own vehicle and the object based on the position, etc. of the object, and performs a driving support for avoiding the collision when the probability of the collision is high. Further, a sensitivity of determination is set high when the object remains in the target area, or when the object is moving towards the target area, while the sensitivity is set low when the object is not present in the target area, or the object is moving away from the target area.Type: ApplicationFiled: March 28, 2014Publication date: October 2, 2014Applicant: DENSO CORPORATIONInventors: Taku Sakima, Akira Isogai
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Publication number: 20140249305Abstract: The present invention provide a hydrophilized cellulose fiber producing method, comprising oxidizing cellulose fibers in a reaction solution containing a N-oxyl compound, an oxidizing agent, and a co-catalyst and oxidizing other cellulose fibers using the reaction solution again. The present invention relate to a hydrophilized cellulose fiber producing method, comprising the steps of: (1a) oxidizing cellulose fibers in a reaction solution containing a N-oxyl compound, an oxidizing agent, and sodium sulfate to provide oxidized cellulose fibers; and (1b) separating the obtained oxidized cellulose fibers from the reaction solution, and then adding other additional cellulose fibers and oxidizing agent to the reaction solution to oxidize the cellulose fibers again to provide oxidized cellulose fibers.Type: ApplicationFiled: September 11, 2012Publication date: September 4, 2014Applicant: GUNZE LIMITEDInventors: Chiaki Tanaka, Yoshinari Yui, Akira Isogai
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Patent number: 8708855Abstract: A vehicle drive system, including a motor generator; a gear group having a plurality of gears; and a motor cooling circuit for cooling the motor generator. The system further includes a lubricating circuit for lubricating the gear group; a cooler circuit in which an oil cooler is provided; and an oil pump that supplies oil to each circuit. The motor cooling circuit is arranged in series with and downstream of the cooler circuit, and the lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump.Type: GrantFiled: March 10, 2011Date of Patent: April 29, 2014Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Junji Matsushita, Akira Isogai, Daisuke Iimura, Hironari Toyoda
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METHOD FOR PRODUCING HYDROPHILIZED CELLULOSE FIBER, AND METHOD FOR REDUCING OXIDIZED CELLULOSE FIBER
Publication number: 20130296544Abstract: This invention provides a method for hydrophilic cellulose fibers capable of inhibiting decrease in the degree of polymerization and whiteness degree of oxidized cellulose fibers in oxidized cellulose in which a carbon at position 6 of each glucose unit in the cellulose fiber starting material is oxidized to a carboxyl group, the method comprising (A) the step of performing dehalogenation together with reduction, the dehalogenation comprising mixing a dehalogenation agent, a reducing agent, and oxidized cellulose fibers, and removing halogens remaining in the oxidized cellulose fibers, and the reduction comprising reducing a ketone group at position 2 and/or position 3 of each glucose unit in the oxidized cellulose fibers.Type: ApplicationFiled: January 18, 2012Publication date: November 7, 2013Applicant: GUNZE LIMITEDInventors: Akira Isogai, Chiaki Tanaka, Yoshinari Yui -
Patent number: 8377563Abstract: A papermaking additive comprising cellulose nanofibers whose aqueous solution at a concentration of 2% (w/v) has a B-type viscosity (60 rpm, 20° C.) of 500 to 7000 mPa·s, preferably 500 to 2000 mPa·s is used to prepare a paper having improved air resistance and smoothness. This additive is prepared by oxidizing a cellulosic material with an oxidizing agent in the presence of (1) N-oxyl compound(s) and (2) bromide, iodide or a mixture thereof to prepare oxidized cellulose, and finely grinding the oxidized cellulose in a wet condition to convert the oxidized cellulose into nanofibers.Type: GrantFiled: March 25, 2009Date of Patent: February 19, 2013Assignee: Nippon Paper Industruies Co., Ltd.Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20120308624Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) which are selected according to uses of a cosmetic composition, a gel-like composition and a spray composition. By using the composition of the present invention, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics; a gel-like composition wherein gel-state can be kept without separation or water release; and wherein various functional additives which is necessary for the use is mixed without any problem can be obtained.Type: ApplicationFiled: January 22, 2010Publication date: December 6, 2012Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
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Publication number: 20120283363Abstract: A composite material of the invention is a mixture of cellulose microfibers having a carboxyl group content of 0.1 to 3 mmol/g and a moldable polymeric material selected from the group consisting of a biomass-derived polymer and a petroleum-derived polymer. The biomass-derived polymer is preferably polylactic acid or pulp. The cellulose microfibers are preferably present in an amount of 0.01% to 60% by mass. Another composite material of the invention is a mixture of cellulose composite microfibers and a moldable resin, the cellulose composite microfibers being obtained by adsorbing a surfactant onto cellulose microfibers having a carboxyl group content of 0.1 to 3 mmol/g.Type: ApplicationFiled: December 10, 2010Publication date: November 8, 2012Applicant: KAO CORPORATIONInventors: Yoshiaki Kumamoto, Kenta Mukai, Hironobu Kawajiri, Akira Takenaka, Taiki Yoshino, Akira Isogai, Motoi Konishi, Tetsuji Kito