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).

  • Patent number: 9290178
    Abstract: 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: Grant
    Filed: March 28, 2014
    Date of Patent: March 22, 2016
    Assignee: DENSO CORPORATION
    Inventors: Taku Sakima, Akira Isogai
  • Publication number: 20160074305
    Abstract: 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: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Akira ISOGAI, Hideyuki SUMI, Yousuke GOI
  • Publication number: 20160074306
    Abstract: 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: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Akira ISOGAI, Hideyuki SUMI, Yousuke GOI
  • Patent number: 9248090
    Abstract: 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: Grant
    Filed: January 22, 2010
    Date of Patent: February 2, 2016
    Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
  • Patent number: 9243128
    Abstract: 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: Grant
    Filed: December 10, 2010
    Date of Patent: January 26, 2016
    Assignee: KAO CORPORATION
    Inventors: Yoshiaki Kumamoto, Kenta Mukai, Hironobu Kawajiri, Akira Takenaka, Taiki Yoshino, Akira Isogai, Motoi Konishi, Tetsuji Kito
  • Patent number: 9150223
    Abstract: 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: Grant
    Filed: May 13, 2014
    Date of Patent: October 6, 2015
    Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha
    Inventors: Akitoshi Minemura, Norio Tsuchida, Akira Isogai, Jun Tsuchida, Masayuki Shimizu
  • Patent number: 9103065
    Abstract: 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: Grant
    Filed: September 11, 2012
    Date of Patent: August 11, 2015
    Assignee: GUNZE LIMITED
    Inventors: Chiaki Tanaka, Yoshinari Yui, Akira Isogai
  • Publication number: 20150093560
    Abstract: 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: Application
    Filed: May 15, 2013
    Publication date: April 2, 2015
    Applicants: THE UNIVERSITY OF TOKYO, HOKUETSU KISHU PAPER CO., LTD.
    Inventors: Junji Nemoto, Toshihiko Soyama, Akira Isogai, Tsuguyuki Saito
  • Patent number: 8992728
    Abstract: 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: Grant
    Filed: November 26, 2008
    Date of Patent: March 31, 2015
    Assignee: The University of Tokyo
    Inventors: Akira Isogai, Tsuguyuki Saito
  • Publication number: 20150075406
    Abstract: 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: Application
    Filed: February 15, 2012
    Publication date: March 19, 2015
    Inventors: Junji Nemoto, Toshihiko Soyama, Tsuguyuki Saito, Akira Isogai
  • Publication number: 20140343750
    Abstract: 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: Application
    Filed: May 13, 2014
    Publication date: November 20, 2014
    Applicant: DENSO CORPORATION
    Inventors: Akitoshi Minemura, Norio Tsuchida, Akira Isogai
  • Publication number: 20140324330
    Abstract: 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: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: DENSO CORPORATION
    Inventors: Akitoshi Minemura, Akira Isogai, Yoshihisa Ogata
  • Patent number: 8865886
    Abstract: 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: Grant
    Filed: February 16, 2010
    Date of Patent: October 21, 2014
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
  • Publication number: 20140292502
    Abstract: 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: Application
    Filed: March 28, 2014
    Publication date: October 2, 2014
    Applicant: DENSO CORPORATION
    Inventors: Taku Sakima, Akira Isogai
  • Publication number: 20140249305
    Abstract: 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: Application
    Filed: September 11, 2012
    Publication date: September 4, 2014
    Applicant: GUNZE LIMITED
    Inventors: Chiaki Tanaka, Yoshinari Yui, Akira Isogai
  • Patent number: 8708855
    Abstract: 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: Grant
    Filed: March 10, 2011
    Date of Patent: April 29, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Junji Matsushita, Akira Isogai, Daisuke Iimura, Hironari Toyoda
  • Publication number: 20130296544
    Abstract: 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: Application
    Filed: January 18, 2012
    Publication date: November 7, 2013
    Applicant: GUNZE LIMITED
    Inventors: Akira Isogai, Chiaki Tanaka, Yoshinari Yui
  • Patent number: 8377563
    Abstract: 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: Grant
    Filed: March 25, 2009
    Date of Patent: February 19, 2013
    Assignee: Nippon Paper Industruies Co., Ltd.
    Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
  • Publication number: 20120308624
    Abstract: 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: Application
    Filed: January 22, 2010
    Publication date: December 6, 2012
    Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
    Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
  • Publication number: 20120283363
    Abstract: 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: Application
    Filed: December 10, 2010
    Publication date: November 8, 2012
    Applicant: KAO CORPORATION
    Inventors: Yoshiaki Kumamoto, Kenta Mukai, Hironobu Kawajiri, Akira Takenaka, Taiki Yoshino, Akira Isogai, Motoi Konishi, Tetsuji Kito