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: 20130065139
    Abstract: A fuel cell that can have a higher battery capacity without degradation of cathode characteristics is provided. In a biofuel cell that includes one or more battery cell units (1) in which an oxidoreductase exists on the surface of an anode (2) and/or a cathode (3), and the cathode (3) is in contact with both a liquid phase and a gas phase, a selective transmission film (6) that restrains permeation of at least the fuel component is provided between an anode solution unit (4) provided around the anode (2) and a cathode solution unit (5) provided around the cathode (3). The fuel component concentration in the solution in contact with the anode (2) is higher than that in the solution in contact with the cathode (3).
    Type: Application
    Filed: June 2, 2011
    Publication date: March 14, 2013
    Applicant: SONY CORPORATION
    Inventors: Takaaki Nakagawa, Tsunetoshi Samukawa, Hiroki Mita, Taiki Sugiyama, Ryuhei Matsumoto, Hideki Sakai
  • Publication number: 20130011748
    Abstract: A power supply device in which an enzyme is immobilized as a catalyst on negative electrodes and/or positive electrodes, includes electromotive portions in which at least two of the negative electrodes and the positive electrodes are connected in series, and a fuel supply portion which communicates with the negative electrodes and which simultaneously supply a fuel to the negative electrodes, and in the power supply device, the fuel supply portion includes fuel-supply adjusting portions which adjust fuel supply to the negative electrodes.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 10, 2013
    Applicant: Sony Corporation
    Inventors: Hiroki MITA, Takaaki NAKAGAWA, Tsunetoshi SAMUKAWA, Taiki SUGIYAMA, Hideki SAKAI
  • Publication number: 20130011749
    Abstract: A separator formed of a material, which does not transmit liquid, is provided between a cell unit including an electrode on a surface of which an oxidoreductase is present and a fuel storage unit provided adjacent to the cell unit. It is configured such that power generation is started by supply of fuel solution stored in the fuel storage unit to the cell unit by removal of at least a part of the separator.
    Type: Application
    Filed: March 31, 2011
    Publication date: January 10, 2013
    Applicant: SONY CORPORATION
    Inventors: Hiroki Mita, Takaaki Nakagawa, Yuichi Tokita, Hideki Sakai, Ryuhei Matsumoto
  • Patent number: 8351128
    Abstract: A zoom lens includes a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit, the second lens unit, and the third lens unit are arranged in order from an object side to an image side. Distances between the lens units change during zooming. The first lens unit consists of two lenses. Radii of curvature of a lens surface closest to the object side and a lens surface closest to the image side in the first lens unit, a focal length of the first lens unit, and a focal length of the entire zoom lens at a telephoto end are set appropriately.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: January 8, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideki Sakai
  • Patent number: 8338039
    Abstract: A fuel cell is provided. The fuel cell includes at least one of a plant essential oil and a plant essential oil ingredient in an effective amount so as to function as a biological repellent.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 25, 2012
    Assignee: Sony Corporation
    Inventors: Yuichi Tokita, Hideki Sakai, Hideyuki Kumita, Ryuhei Matsumoto, Hiroki Mita, Taiki Sugiyama
  • Patent number: 8292526
    Abstract: A thermal printer has a thermal head for performing printing on a continuously fed recording sheet. A platen roller is mounted to undergo rotation for feeding the recording sheet between the platen roller and the thermal head. A cutting member cuts the recording sheet after printing is performed thereon by the thermal head. A sheet presenter mechanism discharges the recording sheet cut by the cutting member to the exterior. The sheet presenter mechanism is mounted to undergo movement to vary a discharge direction of the recording sheet.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: October 23, 2012
    Assignee: Seiko Instruments Inc.
    Inventor: Hideki Sakai
  • Publication number: 20120264023
    Abstract: A fuel supply body is partially or wholly formed from a material having a biopolymer as a main component and a biocatalyst that metabolically decomposes the biopolymer is contained therein or immobilized thereto. A bio-fuel cell system is constituted of the fuel supply body and a bio-fuel cell including electrodes with an oxidation-reduction enzyme present on a surface thereof to supply fuel and/or the biocatalyst from the fuel supply body to the bio-fuel cell and also to use the fuel supply body itself as the fuel.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 18, 2012
    Applicant: SONY CORPORATION
    Inventors: Hideki Sakai, Hiroki Mita, Shuji Fujita, Ryuhei Matsumoto, Tsunetoshi Samukawa
  • Patent number: 8200392
    Abstract: A vehicle steering control apparatus (10) is provided with: a steering force applying device (15, 30) for applying a steering force front wheels (5, 6); and a lateral force detecting device (42) for detecting a lateral force of each of the front wheels and rear wheels (7, 8), the steering force applying device applying, to the front wheels, a convergent steering force which steers the front wheels in a direction in which yaw oscillation converges, if a ratio of the lateral force (Fr) of the rear wheels to the lateral force (Ff) of the front wheels becomes a ratio of possibly causing the yaw oscillation in a vehicle (1).
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: June 12, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiro Kodaira, Hideki Sakai, Yoji Kunihiro, Motoshi Oki, Kentaro Horiuchi, Etsuo Katsuyama
  • Publication number: 20120000788
    Abstract: An electrolytic method of a fuel capable of suppressing reverse reaction of an enzyme and improving electrolytic rate is provided. In electrolyzing a fuel such as glucose by using an enzyme/electron mediator obtained by immobilizing an enzyme such as gluconate-5-dehydrogenase, alcohol dehydrogenase, and malate dehydrogenase and an electron mediator onto a porous electrode made of a carbon material, electrode reaction is generated only in the enzyme/electron mediator electrode.
    Type: Application
    Filed: March 2, 2010
    Publication date: January 5, 2012
    Applicant: SONY CORPORATION
    Inventors: Ryuhei Matsumoto, Yoshio Goto, Hideki Sakai, Yuichi Tokita
  • Patent number: 8076035
    Abstract: A fuel cell which utilizes the biogenic metabolism to produce a high current density is provided. The fuel cell generates electric power in such a way that the fuel is decomposed stepwise by a plurality of enzymes and those electrons formed by oxidation are transferred to the electrode. The enzymes work such that the enzyme activity of the enzyme involved in decomposition in the early stage is smaller than the sum of the enzyme activities of the enzymes involved in decomposition in the later stage. In the case where a coenzyme is involved, the enzyme activity of the oxidase that oxidizes the coenzyme is greater than the sum of the enzyme activities of the enzymes involved in the formation of the reduced form of the coenzyme, out of the enzymes involved in the stepwise decomposition of the fuel.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: December 13, 2011
    Assignee: Sony Corporation
    Inventors: Hideki Sakai, Takashi Tomita, Ryosuke Takagi, Yusuke Suzuki, Tsuyonobu Hatazawa
  • Publication number: 20110281182
    Abstract: Disclosed herein is a fuel analyzing method for a fuel cell, including the steps of: measuring a physical property and/or an electric characteristic of a fuel to be used in a biofuel cell having an electrode with an oxidoreductase present at a surface thereof; and determining the quantity of an effective component which contributes to power generation in the fuel, from the physical property and/or the electric characteristic.
    Type: Application
    Filed: April 13, 2011
    Publication date: November 17, 2011
    Applicant: SONY CORPORATION
    Inventors: Hideki Sakai, Taiki Sugiyama, Hideyuki Kumita, Ryuhei Matsumoto
  • Publication number: 20110281183
    Abstract: A fuel cell includes: one or a plurality of cell sections having an electrode with an oxidoreductase present at a surface thereof; and a container in which the cell section or sections are contained; wherein the container is provided with a fuel solution pouring port through which to pour a fuel solution into the cell section or sections, and the fuel solution pouring port is oriented in a fixed direction at least at the time of pouring the fuel solution.
    Type: Application
    Filed: April 13, 2011
    Publication date: November 17, 2011
    Applicant: SONY CORPORATION
    Inventors: Ryuhei Matsumoto, Taiki Sugiyama, Hideyuki Kumita, Hideki Sakai
  • Publication number: 20110250511
    Abstract: Disclosed herein is a biofuel cell including a polymer gel reversibly swelling and contracting in response to variations in a property of a fuel solution making contact therewith, the polymer gel being on a surface of an electrode and/or in the inside of the electrode.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 13, 2011
    Applicant: SONY CORPORATION
    Inventors: Tsunetoshi Samukawa, Taiki Sugiyama, Shuji Fujita, Yuichi Tokita, Hideki Sakai
  • Publication number: 20110236770
    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: Application
    Filed: August 6, 2009
    Publication date: September 29, 2011
    Applicant: SONY CORPORATION
    Inventors: Hideki Sakai, Takaaki Nakagawa, Hideyuki Kumita, Hiroki Mita, Yoshihide Hosoda, Taiki Sugiyama, Ryuhei Matsumoto
  • Publication number: 20110229776
    Abstract: Provided are an enzyme immobilizing method, a fuel cell and an electrode for the fuel cell which employ the enzyme immobilizing method, and a method for manufacturing the fuel cell and the electrode. The enzyme immobilizing method prevents reduction in enzyme activity when the enzyme is immobilized on the electrode, so as to make it possible to obtain a high catalyst current value. In the method for immobilizing an enzyme on the electrode used in the fuel cell, an enzyme variant with at least one amino acid residue being deleted, substituted, added, or inserted in a wild-type amino acid sequences is used as the enzyme, and the enzyme variant increases in activity through heat treatment. The immobilization is performed within a temperature range which makes it possible to increase the activity of the enzyme variant.
    Type: Application
    Filed: November 24, 2009
    Publication date: September 22, 2011
    Applicant: SONY CORPORATION
    Inventors: Hideyuki Kumita, Takaaki Nakagawa, Hideki Sakai, Masaya Kakuta, Yuichi Tokita
  • Publication number: 20110200889
    Abstract: A fuel cell with which in the case where an enzyme is immobilized to at least one of a cathode and an anode, sufficient buffer ability is able to be obtained even at the time of high output operation, ability inherent in the enzyme is able to be sufficiently demonstrated, and which has superior performance is provided. In a bio-fuel cell which has a structure in which a cathode and an anode are opposed to each other with an electrolyte layer containing a buffer substance in between, and in which an enzyme is immobilized to at least one of the cathode and the anode, a compound containing an imidazole ring is contained in the electrolyte layer as a buffer substance, and one or more acids selected from the group consisting of acetic acid, phosphoric acid, and sulfuric acid are further added.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 18, 2011
    Applicant: SONY CORPORATION
    Inventors: Hideyuki Kumita, Hiroki Mita, Yoshio Goto, Takaaki Nakagawa, Hideki Sakai, Ryuhei Matsumoto, Yuichi Tokita
  • Publication number: 20110171542
    Abstract: A fuel cell which can directly extract electric power from a polysaccharide, such as starch, is provided. A fuel electrode is formed by immobilizing with an immobilizer, on an electrode comprised of, e.g., carbon, an enzyme responsible for decomposing a polysaccharide into monosaccharides, an enzyme responsible for decomposing the monosaccharide formed, a coenzyme (e.g., NAD? or NADP+) which forms a reductant due to the oxidation reaction in the monosaccharide decomposition process, a coenzyme oxidase (e.g., diaphorase) for oxidizing the reductant of the coenzyme (e.g., NADH or NADPH), and an electron mediator (e.g., ACNQ or vitamin K3) for receiving electrons generated due to the oxidation of the coenzyme from the coenzyme oxidase and delivering the electrons to the electrode. The fuel cell comprises the fuel electrode and the air electrode that sandwich an electrolyte layer.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 14, 2011
    Applicant: SONY CORPORATION
    Inventors: Hideki Sakai, Takashi Tomita, Atsushi Sato, Yuichi Tokita
  • Publication number: 20110171541
    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: Application
    Filed: July 31, 2008
    Publication date: July 14, 2011
    Inventors: Takaaki Nakagawa, Hideki Sakai, Hideyuki Kumita, Masaya Kakuta
  • Publication number: 20110143225
    Abstract: A fuel cell is provided having a structure in which a cathode and an anode face each other with an electrolyte layer therebetween. The cathode includes an electrode on which an oxygen reductase and the like are immobilized, and the electrode has pores therein, water repellency is imparted to at least part of the surface of the electrode. Water repellency is imparted by forming a water-repellent agent on the surface of the electrode. The water-repellent agent includes a water-repellent material such as carbon powder and an organic solvent such as methyl isobutyl ketone that causes phase separation with water. When the electrode has pores therein, there are provided a fuel cell that stably provides a high current value and a method for manufacturing the fuel cell.
    Type: Application
    Filed: June 1, 2009
    Publication date: June 16, 2011
    Applicant: SONY CORPORATION
    Inventors: Takaaki Nakagawa, Hideyuki Kumita, Masaya Kakuta, Hideki Sakai, Hiroki Mita, Yoshio Goto
  • Publication number: 20110145280
    Abstract: Disclosed herein is a system for inquiring about fitness of a beverage as battery fuel, including a search request receiving section configured to receive an input of beverage information regarding a beverage as a search request, a storage section having stored therein a reference database in which search requests and performance data of fuel cells are associated with each other, a search section configured to automatically search the reference database for performance data which coincides with the search request, and a search answer outputting section configured to output a search answer.
    Type: Application
    Filed: November 19, 2010
    Publication date: June 16, 2011
    Applicant: SONY CORPORATION
    Inventors: Yuichi Tokita, Hideki Sakai, Hideyuki Kumita, Ryuhei Matsumoto, Hiroki Mita, Taiki Sugiyama