Patents by Inventor Hideki Sakai

Hideki 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).

  • Publication number: 20160141070
    Abstract: An electric lead contains at least three conductors. Each of conductors has a line which is surrounded by a conductor sheath. Two of the conductors are embodied as signal conductors, and form, with a common partial lead sheath surrounding them, a first partial lead, in particular a signal lead. Another of the conductors is embodied as a power conductor and forms a second partial lead, in particular a power lead. The conductors are surrounded by a separating sleeve, which is in turn surrounded by a common sheath of the electric lead. The lead is characterized in that the partial lead sheath has an inner sheath section and an outer sheath section, and the outer sheath section is harder than the inner sheath section.
    Type: Application
    Filed: January 26, 2016
    Publication date: May 19, 2016
    Inventors: MARKUS HEIPEL, LAZHAR KAHOULI, HIDEKI SAKAI, AKIHIRO KOEDA
  • Patent number: 9201225
    Abstract: A zoom lens includes, in order from an object side to an image side: a positive first lens unit; a positive second lens unit; and an aperture stop disposed between the first and second lens units and moving along a locus different from loci of the first and the second lens units during zooming, the first and second lens units being configured to change an interval therebetween during zooming, the second lens unit including at least one positive lens and at least one negative lens. A distance from a lens surface closest to the object side in the entire system to the aperture stop at a wide angle end, and a distance from the lens surface closest to the object side in the entire system to a lens surface closest to the object side in the second lens unit at the wide angle end are each appropriately set.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: December 1, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hideki Sakai
  • Patent number: 9057869
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, and a third lens unit having positive refractive power, wherein at least the first to third lens units move during zooming from a wide-angle end to a telephoto end, and a focal length f2 of the second lens unit, a focal length ft of the entire zoom lens at the telephoto end, and a refractive index Nd2n of a lens having negative refractive power closest to the object side included in the second lens unit are appropriately set.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: June 16, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Patent number: 8956772
    Abstract: To provide a fuel cell that can perform efficient power generation through a simple fuel supply. There is provided a fuel cell that generates electricity through progress of an oxidation-reduction reaction using an enzyme as a catalyst, the fuel cell including at least a fuel-vaporizing layer formed through vaporization of a fuel; an anode to which a vaporized fuel is supplied from the fuel-vaporizing layer; and a cathode connected to the anode in a state in which protons can be conducted. In the fuel cell, since a fuel is supplied to an electrode in a vaporized state, a vaporized fuel is supplied to an inner portion of the electrode and a reaction sufficiently proceeds at the inner surface of the electrode, which can achieve high output due to efficient power generation.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: February 17, 2015
    Assignee: Sony Corporation
    Inventors: Hideki Sakai, Takaaki Nakagawa, Masaya Kakuta, Yuichi Tokita
  • Patent number: 8930080
    Abstract: A driver state estimation device 1 includes a steering angle sensor 2 detecting a steering angle of a steering, a steering torque sensor 3 detecting steering torque applied to the steering, and an ECU 4 having a steering angle estimation unit 5 and a driver state estimation unit 6. The steering angle estimation unit 5 is input with a steering angle (steering angle detected value) MA detected by the steering angle sensor 2 and steering torque (steering torque detected value) MT detected by the steering torque sensor 3, determines whether the steering angle detected value MA is 0 or not, when the steering angle detected value MA is 0, calculates a steering angle estimated value MAest by multiplying the steering torque detected value MT by the gradient of the steering angle (proportionality coefficient) ? with respect to the steering torque, and when the steering angle detected value MA is not 0, sets the steering angle detected value MA as the steering angle estimated value MAest.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: January 6, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Patent number: 8911908
    Abstract: Provided is a fuel cell that is high in performance capabilities of initial power generation and in volume power density, and produces a stable power. Between fixing plates, first and second cell portions are provided. The first cell portion includes an anode, a cathode, and a proton conductor, and the second cell portion includes an anode, a cathode, and a proton conductor. To a space formed by gas-liquid separation and permeable films, cathode spacers, and an anode spacer, a fuel solution is filled. The gas-liquid separation and permeable films are disposed between the fixing plate and the cathode, and between the fixing plate and the cathode. The cathode spacers are provided around the cathodes, respectively, and the anode spacer is provided between the anodes.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: December 16, 2014
    Assignee: Sony Corporation
    Inventors: Hideki Sakai, Takaaki Nakagawa, Hideyuki Kumita, Hiroki Mita, Yasuhide Hosoda, Taiki Sugiyama, Ryuhei Matsumoto
  • Patent number: 8891180
    Abstract: An optical system includes an aperture diaphragm having such a curved surface shape that an aperture part moves in an optical axis direction as an aperture diameter changes. The aperture diaphragm has a convex shape on an object side when an optical system on the object side of the aperture diaphragm has a negative refractive power, and the aperture diaphragm has a convex shape on an image side when the optical system on the object side of the aperture diaphragm has a positive refractive power.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Patent number: 8808928
    Abstract: Provided is a fuel cell having a structure in which a cathode and an anode face each other with a proton conductor therebetween. In this fuel cell, an oxygen reductase or the like is immobilized on at least the cathode, and the cathode is composed of a material having pores therein such as porous carbon. In this fuel cell, the volume of water contained in the cathode is controlled to be 70% or less of the volume of the pores of the cathode, whereby a high current value can be stably obtained through optimization of the amount of moisture contained in the cathode when an enzyme is immobilized on at least the cathode. Also provided is a method for operating the fuel cell.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 19, 2014
    Assignee: Sony Corporation
    Inventors: Takaaki Nakagawa, Hideki Sakai, Hideyuki Kumita, Masaya Kakuta
  • Publication number: 20140204264
    Abstract: A zoom lens includes, in order from an object side to an image side: a positive first lens unit; a positive second lens unit; and an aperture stop disposed between the first and second lens units and moving along a locus different from loci of the first and the second lens units during zooming, the first and second lens units being configured to change an interval therebetween during zooming, the second lens unit including at least one positive lens and at least one negative lens. A distance from a lens surface closest to the object side in the entire system to the aperture stop at a wide angle end, and a distance from the lens surface closest to the object side in the entire system to a lens surface closest to the object side in the second lens unit at the wide angle end are each appropriately set.
    Type: Application
    Filed: January 6, 2014
    Publication date: July 24, 2014
    Inventor: Hideki Sakai
  • Publication number: 20140085528
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power. Each lens unit moves so that a distance between adjacent lens units changes during zooming. The third lens unit includes a positive lens G3i closest to the image side which has a concave meniscus surface on an image side. A conditional expression 0.03<R3i2/ft<0.25 is satisfied where R3i2 is a radius of curvature of a lens surface on the image side of the positive lens G3i, and ft is a focal length of the overall system at a telephoto end.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 27, 2014
    Applicant: Canon Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Publication number: 20140065494
    Abstract: Provided is a fuel cell capable of preventing elution of nicotinamide adenine dinucleotide and/or a derivative thereof immobilized on an electrode, and capable of preventing performance degradation due to elution, and a method for manufacturing the fuel cell. A biofuel cell having a structure in which a positive electrode and a negative electrode face each other via a proton conductor, the biofuel cell configured so that an enzyme is used to extract electrons from a fuel, wherein the negative electrode is configured from an electrode including carbon and/or an inorganic compound having pores with a size of 2 nm or more and 100 nm or less on the surface, nicotinamide adenine dinucleotide and/or a derivative thereof being immobilized on the carbon and/or the inorganic compound. A carbon particle, a carbon sheet, or carbon fiber is used as the carbon.
    Type: Application
    Filed: January 24, 2012
    Publication date: March 6, 2014
    Applicant: Sony Corporation
    Inventors: Shuji Fujita, Hiroki Mita, Shun Yamanoi, Hideki Sakai, Yuichi Tokita, Seiichiro Tabata, Tsunetoshi Samukawa, Takaaki Nakagawa
  • Publication number: 20140051905
    Abstract: There is provided a stimulus generation apparatus including a stimulus generation section which provides a stimulus for promoting fat burning for fat or a satiety center inside a body cavity.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 20, 2014
    Applicant: SONY CORPORATION
    Inventors: YOICHIRO SAKO, MAIKO SAITOU, TAKAYUKI HIRABAYASHI, HIDEKI SAKAI, TAKATOSHI NAKAMURA
  • Publication number: 20140024102
    Abstract: As a technique for increasing the output of a microbial fuel cell, a microbial fuel cell including a polyol such as glycerol as a fuel and using a microbe in which an enzyme that catalyzes a redox reaction has been introduced by genetic recombination on the side of a negative electrode is provided. By this microbial fuel cell, the velocity of the reaction can be increased to thereby give a high output by retaining a microbe in which an enzyme that catalyzes a redox reaction such as diaphorase has been introduced by genetic recombination on the side of the negative electrode.
    Type: Application
    Filed: February 24, 2012
    Publication date: January 23, 2014
    Inventors: Hideki Sakai, Ryuhei Matsumoto, Shuji Fujita, Yoshio Goto, Yuichi Tokita
  • Publication number: 20130321681
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, and a third lens unit having positive refractive power, wherein at least the first to third lens units move during zooming from a wide-angle end to a telephoto end, and a focal length f2 of the second lens unit, a focal length ft of the entire zoom lens at the telephoto end, and a refractive index Nd2n of a lens having negative refractive power closest to the object side included in the second lens unit are appropriately set.
    Type: Application
    Filed: May 24, 2013
    Publication date: December 5, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hideki Sakai
  • Publication number: 20130300913
    Abstract: An optical system includes an aperture diaphragm having such a curved surface shape that an aperture part moves in an optical axis direction as an aperture diameter changes. The aperture diaphragm has a convex shape on an object side when an optical system on the object side of the aperture diaphragm has a negative refractive power, and the aperture diaphragm has a convex shape on an image side when the optical system on the object side of the aperture diaphragm has a positive refractive power.
    Type: Application
    Filed: May 2, 2013
    Publication date: November 14, 2013
    Inventor: Hideki Sakai
  • Publication number: 20130143131
    Abstract: A biofuel cell is formed by disposing an anode (negative electrode) to be a fuel electrode, an anode current collector, a separator, a cathode current collector, a cathode (positive electrode) to be an air electrode and a gas-liquid separation membrane in this order between a fuel tank and a positive electrode cover. During the formation, an electrode formed of a carbon fiber fabric having a network structure constituted by a monofilament strand of a carbon fiber and has a redox enzyme on the surface is used in at least the anode.
    Type: Application
    Filed: April 25, 2011
    Publication date: June 6, 2013
    Applicant: SONY CORPORATION
    Inventors: Tsunetoshi Samukawa, Taiki Sugiyama, Hideki Sakai, Yuichi Tokita
  • Publication number: 20130126336
    Abstract: There is provided a carbon dioxide immobilization unit capable of easily immobilizing carbon dioxide in the form of an organic acid or a carbohydrate under a normal environment. An anode and a cathode both having a surface where an oxidoreductase is present are disposed to face each other with a proton conductor in between. Then, when electric power is externally supplied to the carbon dioxide immobilization unit, in the anode, water is decomposed to produce protons, and in the cathode, an organic acid or a carbohydrate is produced from the protons produced in the anode and carbon dioxide. At this time, while a carbon dioxide supply section supplies a high concentration of carbon dioxide to the cathode, oxygen produced in the anode and the organic acid or hydrocarbon produced in the cathode are removed from a reaction system through an oxygen removal section and a product recovery section, respectively.
    Type: Application
    Filed: July 8, 2011
    Publication date: May 23, 2013
    Applicant: SONY CORPORATION
    Inventors: Hideki Sakai, Hiroki Mita, Yuichi Tokita
  • Patent number: 8440333
    Abstract: A fuel cell is provided having excellent performance and being capable of achieving a sufficient buffer ability in a high-output operation when an enzyme is immobilized on at least one of a positive electrode and a negative electrode and of sufficiently exhibiting the ability inherent in the enzyme. A biofuel cell includes a structure in which a positive electrode and a negative electrode are opposed to each other with an electrolyte layer containing a buffer material provided therebetween, an enzyme being immobilized on at least one of the positive electrode and the negative electrode. The electrolyte layer contains as the buffer material a compound including an imidazole ring. As the compound including an imidazole ring, imidazole, 1-methylimidazole, 2-methylimidazole, 4-methylimidazole, 2-ethylimidazole, or the like is used.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 14, 2013
    Assignee: Sony Corporation
    Inventors: Takaai Nakagawa, Hideki Sakai, Taiki Sugiyama
  • Patent number: 8419913
    Abstract: A porous electroconductive material is provided. The electroconductive material enables efficient enzymatic metabolic reactions on electrodes and yields electrodes having immobilized enzymes thereon which remain stable in any working environment. The porous electroconductive material, which has a three-dimensional network structure, is formed from a skeleton of porous material and a carbonaceous material covering the surface of the skeleton. The porous material constituting the skeleton is foamed metal or alloy. This porous electroconductive material is made into an electrode, and enzymes are immobilized on this electrode. The resulting electrode with immobilized enzymes thereon is used as the anode of a bio-fuel cell.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: April 16, 2013
    Assignee: Sony Corporation
    Inventors: Atsushi Sato, Hideki Sakai, Mamoru Hatakeyama, Takaaki Nakagawa
  • Patent number: D689924
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: September 17, 2013
    Assignee: Seiko Instruments Inc.
    Inventors: Hideki Sakai, Kazuyuki Aizawa