Patents by Inventor Shin Saito

Shin Saito 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: 20100159350
    Abstract: A membrane-electrode assembly for a solid polymer fuel cell, which comprises a mutually opposing anode catalyst layer and cathode catalyst layer with a polymer electrolyte membrane formed between the anode catalyst layer and cathode catalyst layer, wherein the anode catalyst layer and cathode catalyst layer each contain a catalyst and a hydrocarbon-based polymer electrolyte with an ion-exchange group. If the ion-exchange group density of the anode catalyst layer is represented as ? [?eq/cm2] and the ion-exchange group density of the cathode catalyst layer is represented as ? [?eq/cm2], then ? and ? satisfy the following relational expressions (1), (2) and (3). ?/?>1.0??(1) ?<0.45??(2) ?<0.
    Type: Application
    Filed: June 13, 2008
    Publication date: June 24, 2010
    Inventors: Hiroyuki Kurita, Hiroshi Shinoda, Shin Saito, Ryuma Kuroda
  • Publication number: 20100086823
    Abstract: A membrane-electrode assembly, containing an electrode catalyst containing a base metal complex, in which exchange current density i0 obtained from a Tafel plot, which is related to current density and voltage, is 5.0×10?4 Acm?2 or more, and in which a Tafel slope obtained from the Tafel plot is 450 mV/decade or less; and a membrane-electrode assembly, containing catalyst layers each containing an electrode catalyst on both sides of an electrolyte membrane, in which at least one of the catalyst layers comprises a non-noble metal-based electrode catalyst, and in which the electrolyte membrane is a hydrocarbon-based electrolyte membrane.
    Type: Application
    Filed: March 10, 2008
    Publication date: April 8, 2010
    Applicant: Sumitomo Chemical Company Limited
    Inventors: Nobuyoshi Koshino, Hiroshi Shinoda, Shin Saito, Hideyuki Higashimura, Taiga Sakai
  • Patent number: 7684392
    Abstract: A virtual network prefix is provided as a dedicated prefix for a mobile node in a domain having a plurality of subnets. The domain includes a layered network that has a quasi-micro mobility network (QMMN) and a pure-micro mobility network (PMMN). The quasi-micro mobility network (QMMN) performs prefix-based routing, and the pure-micro mobility network (PMMN) performs routing using two different routing protocols, that is, prefix-based routing and host-based routing. In each network, processing for changing a route, such as changing cache data or the like, is performed depending on how a terminal moves.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: March 23, 2010
    Assignee: Sony Corporation
    Inventors: Shin Saito, Fumio Teraoka, Kuniaki Kurihara, Kazuhiro Shitama
  • Patent number: 7685260
    Abstract: A method that enables a tester to efficiently perform confirmation behavior of a Web page that utilizes DHTML or difference in behavior of the Web page among various browsers, or assignment of information relating to accessibility of the Web page or verification of the information. A method is provided that analyzes change in a Web page by determining states that can dynamically occur in response to an external event in a Web page that utilizes DHTML by analyzing at least one of DOM, style information for when rendered on a browser, input data from a user, and the value of a global variable in JAVA®SCRIPT, storing data that can identify each of the states, identifying state transition between the stored states, and reproducing the stored states.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: March 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kentarou Fukuda, Shin Saito
  • Publication number: 20100068589
    Abstract: There is provided a membrane-electrode assembly including catalyst layers disposed on both surfaces of an electrolyte membrane, wherein water transfer resistance of said electrolyte membrane, calculated by the following formula (F1), is 10 ?m·g/meq or less and a platinum amount contained in at least one of the catalyst layers is 0.02 to 0.20 mg/cm2.
    Type: Application
    Filed: November 8, 2007
    Publication date: March 18, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Shin Saito, Ryuma Kuroda
  • Publication number: 20100039730
    Abstract: The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium 10 according to the present invention includes at least a soft magnetic underlayer 2, an orientation control layer 3, a magnetic recording layer 4, and a protective layer 5 formed on a non-magnetic substrate 1. The orientation control layer 3 has a seed layer 6 and an intermediate layer 7. The seed layer 6 is made of a Cu—Ti alloy that has a face-centered cubic structure and includes Cu as a main component.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 18, 2010
    Applicants: SHOWA DENKO K. K., KABUSHIKI KAISHA TOSHIBA, TOHOKU UNIVERSITY
    Inventors: Shinichi ISHIBASHI, Migaku TAKAHASHI, Shin SAITO, Yuzo SASAKI, Atsushi HASHIMOTO, Gohei KUROKAWA, Tomoyuki MAEDA, Akihiko TAKEO
  • Patent number: 7664538
    Abstract: A wireless communication device is provided. The wireless communication device includes a communicate range and communicating with a destination device outside the communication range thorough at least one relay station. The wireless communication device includes power mode controlling means for performing power saving control of power supplied to the wireless communication device; forcing information holding means for holding forcing information including a forced mode flag indicating whether a forced operation instruction concerning the power saving control is enabled or disabled and a limited number of the relay stations; forcing information transmitting means for transmitting the forcing information to another wireless communication device within the communication range of the wireless communication device; and forcing-information update controlling means for updating the forcing information.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: February 16, 2010
    Assignee: Sony Corporation
    Inventors: Kazuhiro Watanabe, Shin Saito
  • Publication number: 20100033873
    Abstract: In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 11, 2010
    Applicants: SHOWA DENKO K. K., KABUSHIKI KAISHA TOSHIBA, TOHOKU UNIVERSITY
    Inventors: Shinichi ISHIBASHI, Migaku Takahashi, Shin Saito, Yuzo Sasaki, Atsushi Hashimoto, Gohei Kurokawa, Tomoyuki Maeda, Akihiko Takeo
  • Publication number: 20090317683
    Abstract: The present invention is to provide a membrane electrode assembly for fuel cell which retains the wet state of a polymer electrolyte membrane and has excellent output characteristic under low humidified condition, under high-temperature condition, or in high current density region, and a fuel cell provided with the membrane electrode assembly.
    Type: Application
    Filed: August 23, 2007
    Publication date: December 24, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mitsuyasu Kawahara, Masayoshi Takami, Shin Saito, Yasuhiro Yamashita
  • Patent number: 7630334
    Abstract: A wireless communication network that forms an ad-hoc network without the arrangement of a controlling station sets a period that a communication apparatus can utilize with priority and performs isochronous communication in the period as required. When isochronous communication has not been performed or after isochronous communication has finished in the priority utilization period, other communication apparatuses perform arbitrary communication. When another communication is performed in a communication apparatus's own priority utilization period, the start of isochronous communication is temporarily delayed. In an ad-hoc communication environment, data having a real-time characteristic, such as AV content, can be efficiently transmitted through the isochronous communication.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: December 8, 2009
    Assignee: Sony Corporation
    Inventors: Shigeru Sugaya, Shin Saito, Kazuyuki Sakoda
  • Publication number: 20090208804
    Abstract: Provided is a polymer electrolyte emulsion, wherein a polymer electrolyte particle is dispersed in a dispersing medium, a zeta potential at the measurement temperature of 25° C. being in a range of ?50 mV to ?300 mV. Also, provided is a polymer electrolyte emulsion, wherein a polymer electrolyte particle is dispersed in a dispersing medium, an ion exchange capacity of a solid material obtained by removing a volatile substance from the polymer electrolyte emulsion being 1.5 to 3.0 meq/g.
    Type: Application
    Filed: June 29, 2007
    Publication date: August 20, 2009
    Inventors: Ryuma Kuroda, Shin Saito, Hiroyuki Kurita, Kentaro Masui
  • Publication number: 20090208810
    Abstract: A process for producing a polymer electrolyte emulsion having the following steps (1) and (2) is provided. Step (1): a step of dissolving a polymer electrolyte in a solvent comprising a good solvent for the polymer electrolyte to prepare a polymer electrolyte solution having a polymer electrolyte concentration of 0.1 to 10% by weight. Step (2): a step of mixing the polymer electrolyte solution obtained in the step (1), and a poor solvent for the polymer electrolyte at a ratio of 4 to 99 parts by weight of the poor solvent based on 1 part by weight of the polymer electrolyte solution. In addition, a process for producing a polymer electrolyte emulsion comprising separating a polymer electrolyte dispersion in which a polymer electrolyte particle is dispersed in a dispersing medium, with a membrane is provided.
    Type: Application
    Filed: June 29, 2007
    Publication date: August 20, 2009
    Inventors: Ryuma Kuroda, Shin Saito, Hiroyuki Kurita, Kentaro Masui
  • Publication number: 20090202888
    Abstract: A polymer electrolyte emulsion wherein a polymer electrolyte particle is dispersed in a dispersing medium, wherein a polymer electrolyte contained in the polymer electrolyte particle is a block copolymer consisting of a segment having an acidic group and a segment without substantially ion exchange group, is provided.
    Type: Application
    Filed: June 29, 2007
    Publication date: August 13, 2009
    Inventors: Ryuma Kuroda, Shin Saito, Hiroyuki Kurita, Kentaro Masui
  • Patent number: 7561525
    Abstract: A wireless communication system for performing multi-hop transmission between stations includes: a requesting station for requesting multi-hop transmission; a destination station which receives the request from the requesting station; and neighbor stations, wherein the requesting station determines a communication capacity for each neighbor station and transmits a routing request message in which capacity information is described to each neighbor station, and based on the capacity information described in the routing request message received from each neighbor station, the destination station determines as to which routing request message to respond to and performs routing.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: July 14, 2009
    Assignee: Sony Corporation
    Inventor: Shin Saito
  • Publication number: 20090166579
    Abstract: The present invention is to provide an electrolyte membrane which retains durability even after having undergone a dimensional change accompanying chemical deterioration caused owing to radicals having high oxidizing ability such as hydroxyl radicals (.OH) or peroxide radicals (.OOH), and the selecting method thereof. An electrolyte membrane has an amount of dimensional change in a plane direction between dimensions obtained in a dry state before and after carrying out the Fenton test, the amount of dimensional change before and after the Fenton test being smaller than an amount of maximum elastic deformation in a plane direction obtained in dry state before carrying out the Fenton test, provided that the Fenton test is carried out under the following condition, and the selecting method of the same. <Condition of Fenton test> (1) iron ion (Fe2+) concentration: 4 ppm, (2) hydrogen peroxide concentration: 3 wt %, (3) boiling temperature: 80° C.
    Type: Application
    Filed: June 11, 2007
    Publication date: July 2, 2009
    Applicants: Toyota Jidosha Kabushiki Kaisha, Sumitomo Chemical Company, Limited
    Inventors: Mitsuyasu Kawahara, Masayoshi Takami, Katsuhiko Iwasaki, Shin Saito
  • Publication number: 20090147401
    Abstract: The present invention provides a magnetic recording medium capable of recording or reproducing high-density information by reducing the grain size of a perpendicular magnetic recording layer and improving vertical orientation, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. The perpendicular magnetic recording medium includes: a non-magnetic substrate; and at least an soft magnetic layer, an under layer, an intermediate layer, and a perpendicular magnetic recording film that are formed on the non-magnetic substrate. At least one layer of the intermediate layer is made of an alloy material of an element having an fcc structure and an element having a bcc structure or an hcp structure, and has both a crystal structure having (111) orientation and an irregular layer lattice (stacking fault) caused by a mixture of the fcc structure and the bcc structure.
    Type: Application
    Filed: May 5, 2007
    Publication date: June 11, 2009
    Inventors: Migaku Takahashi, Shin Saito, Tomoyuki Maeda, Akihiko Takeo, Yuzo Sasaki, Ryuji Sakaguchi
  • Publication number: 20090143038
    Abstract: The present invention relates to a data processing device data processing device (1; 1?) for processing signals received via a wireless link, comprising a first beam steering and/or forming antenna (5) arranged on said data processing device (1; 1?) adapted to receive data via said wireless link, a second beam steering and/or forming antenna (6) arranged on said data processing device (1; 1?) in an angle to said first beam steering and/or forming antenna (5), said second beam steering and/or forming antenna (6) adapted to receive data via said wireless link, and processing means (10) adapted to process signals received by said first (5) and said second (6) beam steering and/or forming antenna. The present invention further relates to a similar data processing device adapted to transmit signals via beam steering and/or forming antennas.
    Type: Application
    Filed: November 18, 2008
    Publication date: June 4, 2009
    Applicant: Sony Corporation
    Inventor: Shin SAITO
  • Publication number: 20090137406
    Abstract: The present invention provides an RNA detection method detecting, from a reaction system containing a target sample, a target RNA chain originated from the target sample, using a surface having on the surface thereof a polymer substance which contains a first unit having a group derived from a phosphate ester composing the hydrophilic portion of a phospholipid and a second unit having a carboxylic acid derivative group composed of an electron-attractive substitutional group bound to a carbonyl group, while being provided with at least one reaction space, the reaction space having an immobilized nucleic acid primer immobilized therein.
    Type: Application
    Filed: June 1, 2007
    Publication date: May 28, 2009
    Inventors: Kenji Kinoshita, Kanehisa Yokoyama, Kentaro Fujimoto, Toru Yakabe, Shin Saito, Kazuhiko Fujiwara
  • Publication number: 20090117438
    Abstract: The present invention provides polymer electrolyte that has the ion-exchange capacity of 1.7 meq/g or more and has the reduced viscosity of 160 mL/g or more at 40° C. when being made to be 1% by weight solution with at least one kind of solvent selected from the group consisting of N,N-dimethylformamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide, N,N-dimethylacetamide, sulfolane, and ?-butyrolactone, and polymer electrolyte that has the ion-exchange capacity of 1.7 meq/g or more and the reduced viscosity of 160 mL/g or more at 40° C. when being made to be 1% by weight solution with at least one kind of solvent selected from the group consisting of N,N-dimethylformamide, N-methyl-2-pyrrolidone, and dimethyl sulfoxide.
    Type: Application
    Filed: September 13, 2006
    Publication date: May 7, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY , LIMITED
    Inventors: Shin Saito, Katsuhiko Iwasaki, Ken Yoshimura, Takashi Yamada
  • Patent number: 7529551
    Abstract: A system and method for performing ranging and positioning as follows by using the procedure for packet transmission and reception between a sender and a recipient. A first radio set transmits packets to a second radio set as a recipient. The second radio set returns the packets without fail after the lapse of time (from the detection of packets) which corresponds to an integral multiple of a prescribed unit time. The first radio set counts, by using its counter, the time which has elapsed from its transmission of packets to its detection of packets from the second radio set. The remainder of the thus counted time after subtraction of the time taken by the second radio set from packet detection to packet return and the processing time of the first radio set itself is converted into the distance of propagation between the first radio set and the second radio set as a recipient.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: May 5, 2009
    Assignee: Sony Corporation
    Inventors: Katsuyuki Tanaka, Mitsuhiro Suzuki, Shin Saito, Katsumi Watanabe