Patents by Inventor Toshiki Sato

Toshiki Sato 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: 8137866
    Abstract: A separator for a fuel cell comprising a titanium alloy substrate containing at least one noble metal element selected from platinum group elements, Au and Ag; and a layer of a mixture formed on the titanium alloy substrate, said mixture comprising the noble metal element precipitated from the titanium alloy substrate and titanium oxide, and said layer having an average thickness of up to 200 nm; wherein the mixture layer on the surface and the titanium alloy substrate have a conductivity in terms of contact resistance as determined by the following method of up to 12 m?·cm2. The contact resistance is determined by placing a carbon cloth having an average thickness of 0.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: March 20, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Jun Suzuki, Toshiki Sato, Kasumi Yanagisawa, Takashi Yashiki, Masahito Fukuda
  • Publication number: 20120064370
    Abstract: Disclosed is an Al alloy reflective film which has a higher reflectance than that of pure Al films when produced by sputtering, excels in alkali resistance, acid resistance, and moisture resistance, and therefore less suffers from the reduction in reflectance even when a protective coating is not applied. Specifically disclosed is an Al alloy reflective film which contains at least one element selected from Sc, Y, La, Gd, Tb, and Lu in a total amount of from 0.4 to 2.5 atomic percent, with the remainder being Al and inevitable impurities. The Al alloy reflective film has a film surface roughness of 4 nm or less as measured with an atomic force microscope. Also disclosed are an automotive lighting device and an illumination device each provided with the reflective film. Further disclosed is an Al alloy sputtering target for use in the formation of the reflective film.
    Type: Application
    Filed: June 15, 2010
    Publication date: March 15, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shinichi Tanifuji, Toshiki Sato, Yoshinori Ito, Takayuki Tsubota, Jun Suzuki, Nobuhiro Kobayashi
  • Publication number: 20110318607
    Abstract: Provided is an Al alloy reflective film which does not require a protective film in that it has excellent alkali resistance (resistance to alkali corrosion), acid resistance (resistance to acid corrosion) and humidity resistance (resistance to a high-temperature, humid environment) even if there is no protective film, and which contains 2.5 to 20 at % of at least one element selected from Gd, La, Y, Sc, Tb, Lu, Pr, Nd, Pm, Ce, Dy, Ho, Er, and Tm, with the balance being Al and inevitable impurities. Also provided are an automobile light, illuminator, and ornamentation having such an Al alloy reflective film. Further provided is an Al alloy sputtering target, which is for forming such an Al alloy reflective film and which contains 2.5 to 35 at % of at least one element selected from Gd, La, Y, Sc, Tb, Lu, Pr, Nd, Pm, Ce, Dy, Ho, Er, and Tm, with the balance being Al and inevitable impurities.
    Type: Application
    Filed: March 2, 2010
    Publication date: December 29, 2011
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Nobuhiro Kobayashi, Toshiki Sato, Jun Suzuki, Shinichi Tanifuji, Yoshinori Ito, Takayuki Tsubota
  • Patent number: 8081893
    Abstract: An image forming apparatus is provided that has a first pressurizing member, a heating member, and a belt member laid across the heating member and the first pressurizing member in a tensioned state, the belt member being heated by the heating member. The apparatus also includes a second pressurizing member arranged at such position that the second pressurizing member is pressed against the first pressurizing member via the belt member, a fixing unit for fixing a developer image on a medium between the belt member and the second pressurizing member, and a heating control unit for controlling heating of the heating member to drive a temperature of the heating member toward a predetermined target temperature. In addition, the apparatus includes a first temperature detection unit for detecting the temperature of the first pressurizing member. The heating control unit determines the targeted temperature based on the temperature of the first pressurizing member detected by the first temperature detection unit.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: December 20, 2011
    Assignee: Oki Data Corporation
    Inventor: Toshiki Sato
  • Publication number: 20110220903
    Abstract: To avoid a phenomenon of deterioration which is characteristic to an organic EL display device, such as a dark spot, without forming a pin hole in an organic material used for forming an organic EL layer. A reflective anode for an organic EL display device includes: an Ag-based alloy film (6) containing 0.01 to 1.5 atomic % of Nd and formed on a substrate (1); and an oxide conductive film (7) formed on the Ag-based alloy film (6) and in direct contact with the film (6).
    Type: Application
    Filed: November 9, 2009
    Publication date: September 15, 2011
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.)
    Inventors: Yuuki Tauchi, Mototaka Ochi, Toshiki Sato
  • Publication number: 20110200344
    Abstract: When the temperature of a fixing section has not reached a fixable temperature and the condition of an image forming apparatus is an abnormal temperature rising condition, a print controller causes a toner image conveying section to move a toner image on an intermediate transfer member to a predetermined toner image standby position upstream of a secondary transfer section and to put the toner image on standby at the toner image standby position, and causes a recording medium conveying section to put a recording medium on standby at a predetermined sheet standby position upstream of the secondary transfer section. Thereafter, when the temperature of the fixing section reaches the fixable temperature, the print controller causes the secondary transfer section to transfer the toner image on the intermediate transfer member onto the recording medium.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 18, 2011
    Applicant: OKI DATA CORPORATION
    Inventor: Toshiki SATO
  • Publication number: 20110189474
    Abstract: A reflective film laminate is provided with high productivity and at low cost in which a protective film with minimized pinholes is provided to improve the alkali resistance and warm water resistance of the reflective film laminate including a pure Al film or an Al-based alloy film so that a reflectivity reduction resulting from the elution or oxidization of the Al film in an alkaline or warm water environment is less likely to occur. The reflective film laminate of the present invention includes, over a substrate, a pure Al film or an Al-based alloy film as a first layer, and an oxide film of a metal containing one or more elements selected from the group consisting of Zr, Cr, Y, Nb, Hf, Ta, W, Ti, Si, and Mo as a second layer over the first layer. The thickness of the second layer is 0.1 to 10 nm.
    Type: Application
    Filed: January 4, 2011
    Publication date: August 4, 2011
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.)
    Inventors: Sho KATSURA, Nobuhiro Kobayashi, Jun Suzuki, Toshiki Sato
  • Patent number: 7970299
    Abstract: The aim of the present invention is to provide an image forming apparatus that accurately detects surface temperature of a rotating body using a noncontact temperature detection section and corrects the detected temperature according to the temperature of the surrounding area. The present invention detects the temperature of a thermal unit and the temperature of a holding unit and corrects the temperature of the thermal unit based on the temperature of the holding unit so that effects from the temperature of a surrounding area can be corrected and the temperature can accurately be detected without scarring a surface of the rotating body. Accurate regulation of the surface temperature of the rotating body can therefore be performed.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: June 28, 2011
    Assignee: Oki Data Corporation
    Inventor: Toshiki Sato
  • Publication number: 20110135334
    Abstract: An invented fixing device having a fixing roller for fixing developer to a recording medium and plural fixing heaters for heating the fixing roller includes a temperature detection unit as well as a thermistor for detecting the temperature of the fixing roller, a RAM storing the switching temperature for switching drive of the fixing heaters, a heater selection unit for selecting some of the fixing heaters to be driven based on the switching temperature and the detected temperature of the fixing member detected through the temperature detection unit, and a heat control unit for selectively driving the fixing heater selected by the heater selection unit.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 9, 2011
    Applicant: OKI DATA CORPORATION
    Inventor: Toshiki SATO
  • Publication number: 20110042135
    Abstract: The present invention relates to an Ag alloy film. Particularly, it is preferably used as a reflective film or semi-transmissive reflective film for an optical information recording medium having high thermal conductivity/high reflectance/high durability in the field of optical information recording media, an electromagnetic-shielding film excellent in Ag aggregation resistance, and an optical reflective film on the back of a reflection type liquid crystal display device, or the like. The Ag alloy film of the present invention comprises an Ag base alloy containing Bi and/or Sb in a total amount of 0.005 to 10% (in terms of at %). Further, the present invention relates to a sputtering target used for the deposition of such an Ag alloy film.
    Type: Application
    Filed: October 29, 2010
    Publication date: February 24, 2011
    Applicant: Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
    Inventors: Yuuki TAUCHI, Katsutoshi Takagi, Junichi Nakai, Toshiki Sato
  • Patent number: 7887924
    Abstract: A high-strength steel excellent in hydrogen embrittlement resistance is provided. The high-strength steel of the present invention excellent in hydrogen embrittlement resistance has a tensile strength of 1800 N/mm2 or above, contains 0.3 to 0.7% (percent by mass) C, 0.95 to 5.0% Cr, not higher than 0.6% and higher than 0% Mn, and 0.7 to 2.5% Si, and contains at least one of Mg, Ca, Sr, Ba, Li, Na and K so as to meet the following conditions: (1) the upper limits of the Mg, the Ca, the Sr, the Ba, the Li, the Na and the K content are 0.05%, and (2) the Mg, the Ca, the Sr, the Ba, the Li, the Na and the K content meet Expression (1): Cr + Mn 4 ? 1000 × [ Ca + Mg + Sr + Ba 2 + Li + Na + K 8 ] .
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: February 15, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Wataru Urushihara, Toshiki Sato, Nao Yoshihara
  • Patent number: 7871686
    Abstract: The present invention relates to an Ag alloy film. Particularly, it is preferably used as a reflective film or semi-transmissive reflective film for an optical information recording medium having high thermal conductivity/high reflectance/high durability in the field of optical information recording media, an electromagnetic-shielding film excellent in Ag aggregation resistance, and an optical reflective film on the back of a reflection type liquid crystal display device, or the like. The Ag alloy film of the present invention comprises an Ag base alloy containing Bi and/or Sb in a total amount of 0.005 to 10% (in terms of at %). Further, the present invention relates to a sputtering target used for the deposition of such an Ag alloy film.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: January 18, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Yuuki Tauchi, Katsutoshi Takagi, Junichi Nakai, Toshiki Sato
  • Publication number: 20100290796
    Abstract: A heating device includes: a driving member configured to rotate; a driven member configured to rotate with the rotation of the driving member; a heater configured to heat a surface of one of the driving member and the driven member; a temperature detector configured to measure the temperature of the heated surface; and a controller operable to control heating of the heater based on the measurement result of the temperature detector. The controller includes: a calculator operable to calculate a change ratio of a slope of a temperature change of the heated surface with time, based on a first temperature detected by the temperature detector at a first time point and a second temperature detected by the temperature detector at a second time point a predetermined time interval after the first time point; and a determiner operable to determine that an abnormality occurs when the change ratio exceeds a threshold.
    Type: Application
    Filed: May 7, 2010
    Publication date: November 18, 2010
    Applicant: OKI DATA CORPORATION
    Inventor: Toshiki SATO
  • Publication number: 20100239300
    Abstract: An image forming apparatus includes: a heat transfer member having a width extending along a direction orthogonal to a medium conveying direction along which a medium is conveyed, the heat transfer member transferring heat from a heater to the medium; the heater provided along substantially the entire width of the heat transfer member and configured to heat the heat transfer member so as to heat the medium via the heat transfer member; a temperature detector configured to detect the temperature of the widthwise center of the heat transfer member; a temperature setting unit configured to set a target temperature by correcting a default target temperature, depending on the difference between the default target temperature and the temperature that is detected by the temperature detector when the heater starts to heat; a heat controller configured to control the heater to make the temperature detected by the temperature detector the target temperature.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 23, 2010
    Applicant: Oki Data Corporation
    Inventor: Toshiki Sato
  • Publication number: 20100233587
    Abstract: It is an object of the present invention to provide a titanium electrode material which is low in cost and is excellent in electric conductivity, corrosion resistance and hydrogen absorption resistance, and a surface treatment method of a titanium electrode material. A titanium electrode material includes: on the surface of a titanium material including pure titanium or a titanium alloy, a titanium oxide layer having a thickness of 3 nm or more and 75 nm or less, and having an atomic concentration ratio of oxygen and titanium (O/Ti) at a site having the maximum oxygen concentration in the layer of 0.3 or more and 1.7 or less; and an alloy layer including at least one noble metal selected from Au, Pt, and Pd, and at least one non-noble metal selected from Zr, Nb, Ta, and Hf, having a content ratio of the noble metal and the non-noble metal of 35:65 to 95:5 by atomic ratio, and having a thickness of 2 nm or more, on the titanium oxide layer.
    Type: Application
    Filed: February 22, 2010
    Publication date: September 16, 2010
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd)
    Inventors: Toshiki SATO, Jun Suzuki, Yoshinori Ito, Jun Hisamoto
  • Publication number: 20100209786
    Abstract: Disclosed are a separator for a fuel cell realizing both the high electrical conductivity and the corrosion resistance and enabling using stably for a long period of time in the fuel cell and a manufacturing method for it. The separator for a fuel cell 1 includes a substrate 2 composed of pure aluminum or aluminum alloy and a plating layer 3 formed on the substrate 2, wherein the plating layer 3 has a copper layer 3a formed in the substrate 2 side and a tin layer 3b formed on the copper layer 3a, the tin layer 3b is formed in an uppermost layer, the thickness of the copper layer 3a is 0.10 ?m or above, and the value obtained by dividing the thickness of the tin layer 3b by the thickness of the copper layer 3a is 0.1-50.
    Type: Application
    Filed: December 28, 2009
    Publication date: August 19, 2010
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd)
    Inventors: Jun SUZUKI, Nobuhiro KOBAYASHI, Yoshinori ITO, Toshiki SATO
  • Patent number: 7776420
    Abstract: The present invention relates to an Ag alloy film. Particularly, it is preferably used as a reflective film or semi-transmissive reflective film for an optical information recording medium having high thermal conductivity/high reflectance/high durability in the field of optical information recording media, an electromagnetic-shielding film excellent in Ag aggregation resistance, and an optical reflective film on the back of a reflection type liquid crystal display device, or the like. The Ag alloy film of the present invention comprises an Ag base alloy containing Bi and/or Sb in a total amount of 0.005 to 10% (in terms of at %). Further, the present invention relates to a sputtering target used for the deposition of such an Ag alloy film.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: August 17, 2010
    Assignee: Kobe Steel, Ltd.
    Inventors: Yuuki Tauchi, Katsutoshi Takagi, Junichi Nakai, Toshiki Sato
  • Patent number: 7776393
    Abstract: Provided is a method of producing an alumina film mainly in alpha crystal structure superior in heat resistance, wherein the alumina film mainly in alpha crystal structure is formed on a substrate, independently of the kind of the substrate at relatively low temperature, by treating the substrate surface with a ceramic powder mainly having the crystal structure same as that of alumina in the alpha crystal structure, in forming the alumina film mainly in alpha crystal structure on the substrate (including the substrate having a film previously formed thereon).
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: August 17, 2010
    Assignee: Kobe Steel, Ltd.
    Inventors: Hiroshi Tamagaki, Toshimitsu Kohara, Toshiki Sato
  • Publication number: 20100203385
    Abstract: A negative electrode for alkaline storage battery using a hydrogen-absorbing alloy includes fluorinated oil and a surface active agent.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 12, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yoshifumi Magari, Tadayoshi Tanaka, Shigekazu Yasuoka, Masaru Kihara, Akira Saguchi, Toshiki Sato
  • Publication number: 20100203424
    Abstract: The present invention provides: a corrosion resistant film that yields the effect of keeping a low contact resistance for an extended period of time by covering the surface of a fuel cell separator and is excellent in productivity at a low cost; and a separator using the corrosion resistant film. A separator according to the present invention has a corrosion resistant film formed by laminating a corrosion resistant layer and a conductive layer comprising one or more kinds of noble metal elements selected from the group of Au and Pt on the surface of a substrate comprising a metallic material such as Ti, Al, or SUS. The corrosion resistant layer: comprises an alloy of one or more kinds of noble metal elements selected from the group of Au and Pt and one or more kinds of normoble metal elements selected from the group of Nb, Ta, Zr, and Hf; and contains the normoble metal elements by 50 to 90 atomic %.
    Type: Application
    Filed: November 10, 2009
    Publication date: August 12, 2010
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO(KOBE STEEL, LTD.)
    Inventors: YOSHINORI ITO, TOSHIKI SATO, JUN SUZUKI, JUN HISAMOTO