Patents by Inventor Jun Tamura

Jun Tamura 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: 20090092023
    Abstract: A cleaning tape has a base tape made of a synthetic resin and a cleaning layer formed on a surface of this base tape. The cleaning layer has a binding agent and a large number of spherical particles dispersed in the binding agent in a single particle layer. Such a cleaning tape is capable of removing very small unwanted protrusions and particles on the surface of a target object such as a magnetic hard disk without forming scratches.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 9, 2009
    Applicant: NIHON MICRO COATING CO., LTD.
    Inventors: Yuji Horie, Yasuyuki Yokota, Jun Tamura, Akihiro Sakamoto, Noriyuki Kumasaka
  • Publication number: 20090093192
    Abstract: A device for polishing the peripheral edge part of a semiconductor wafer includes a wafer stage for holding the wafer, a wafer stage unit including devices for rotating the wafer stage, causing the wafer stage to undergo a rotary reciprocating motion within the same plane as the surface of the wafer stage, and moving the wafer stage parallel to the surface, a notch polishing part for polishing the notch on the wafer and a bevel polishing part for polishing the beveled part of the wafer. Pure water is supplied to the wafer to prevent it from becoming dry as it is transported from the notch polishing part to the bevel polishing part.
    Type: Application
    Filed: April 18, 2006
    Publication date: April 9, 2009
    Applicants: EBARA CORPORATION, NIHON MICRO COATING CO., LTD.
    Inventors: Tamami Takahashi, Kenya Ito, Mitsuhiko Shirakashi, Kazuyuki Inoue, Kenji Yamaguchi, Masaya Seki, Satoru Sato, Jun Watanabe, Kenji Kato, Jun Tamura, Souichi Asakawa
  • Publication number: 20090081528
    Abstract: The present invention provides a supported catalyst excellent both in catalytic performance and in stability against concentrated methanol. The supported catalyst is used for an electrode of a fuel cell, and comprises catalytic metal particles supported on supports. The supports have hydrophilicity. On at least one part of the surface of the hydrophilic supports, particles of metal oxide super-strong acid are also supported. The metal oxide super-strong acid particles promote proton conduction.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 26, 2009
    Inventors: Yoshihiko Nakano, Jun Tamura, Mutsuki Yamazaki
  • Publication number: 20090061276
    Abstract: This invention provides an anode for a fuel cell which can realize stable output for a long period of time, and a fuel cell using the anode for a fuel cell. The anode for a fuel cell comprises an electrode catalyst layer, the electrode catalyst layer comprising a supported catalyst comprising an electroconductive carrier material and catalyst fine particles supported on the electroconductive carrier material, a proton conductive inorganic oxide, and a proton conductive organic polymer binder, the weight ratio between the supported catalyst (C) and the proton conductive inorganic oxide (SA), WSA/WC, being 0.06 to 0.38, the weight ratio between the proton conductive inorganic oxide (SA) and the proton conductive organic polymer binder (P), WP/WSA, being 0.125 to 0.5.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Jun TAMURA, Yoshihiko NAKANO, Wu MEI, Taishi FUKAZAWA
  • Publication number: 20080293332
    Abstract: A circular polishing pad has grooves formed on the surface in a spiral pattern with its center point offset from the center of the pad. The spiral pattern is an Archimedean spiral pattern or a parabolic spiral pattern. A target object is polished by using such a polishing pad without oscillating the platen to which the polishing pad is pasted or the polishing head that holds the target object.
    Type: Application
    Filed: May 23, 2008
    Publication date: November 27, 2008
    Applicant: NIHON MICRO COATING CO., LTD.
    Inventors: Jun Watanabe, Tetsujiro Tada, Takashi Arahata, Jun Tamura, Moriaki Akazawa, Masaru Sakamoto, Takahiko Kawasaki
  • Publication number: 20080254974
    Abstract: There is provided a supported catalyst which has an excellent catalyst performance and is stable against highly concentrated methanol. The supported catalyst for a fuel cell electrode comprises a carrier and a catalytic metal supported on the carrier, characterized in that the carrier is hydrophilic and a metal oxide capable of accelerating proton conduction is provided on at least a part of the surface of the hydrophilic carrier.
    Type: Application
    Filed: March 18, 2008
    Publication date: October 16, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshihiko Nakano, Jun Tamura, Kazuhiro Yasuda
  • Publication number: 20080242576
    Abstract: A probe cleaning sheet for removing foreign objects attached to tip part of a probe is formed with a plastic sheet having a flat and even surface and a uniform thickness and a cleaning layer with a flat and even surface and a uniform thickness formed on the surface of this plastic sheet. The cleaning layer has viscoelastic properties. Its Young's modulus is 30 MPa or more and 700 MPa les less, its storage modulus at 25° C. is 1.2×108 dyn/cm2 or more and 1.2×109 dyn/cm2 or less, and the value of its storage modulus at 25° C. is 1.2 or more and 3.0 or less times the value of its storage modulus at 150° C.
    Type: Application
    Filed: August 3, 2007
    Publication date: October 2, 2008
    Inventors: Jun Tamura, Toshihiro Kobayashi, Jun Watanabe
  • Publication number: 20080203472
    Abstract: A lateral MOSFET according to the present invention has a trench gate structure having a cross sectional shape spreading toward an open end.
    Type: Application
    Filed: February 25, 2008
    Publication date: August 28, 2008
    Applicant: NEC ELECTRONICS CORPORATION
    Inventor: Jun TAMURA
  • Publication number: 20080070481
    Abstract: A probe cleaner for removing foreign objects from the tip part of a probe is formed with a cleaner sheet having a surface part with microfibers and abrading particles affixed to the surface of the microfibers at this surface part. The average fiber diameter of the microfibers is in the range of 0.1 ?m or more and 20 ?m or less. The average particle diameter of the abrading particles is in the range of 0.05 ?m or more and 3.0 ?m or less. For cleaning the tip part of a probe, the probe cleaner is set to the surface of a table, the tip part of the probe is caused to penetrate inside the surface part, and the probe is caused to undergo a reciprocal motion in the direction of the thickness of the surface part.
    Type: Application
    Filed: August 24, 2007
    Publication date: March 20, 2008
    Inventors: Jun Tamura, Kenji Kato
  • Publication number: 20080026282
    Abstract: A fuel cell, which can supply stable output even at elevated temperatures and can maintain its power generation performance over a long period of time, can be realized by an electrode for a fuel cell comprising a catalyst layer formed of a catalyst composite and a binder, the catalyst composite comprising a proton-conductive inorganic oxide and an oxidation-reduction catalyst phase supported on the proton-conductive inorganic oxide, the proton-conductive inorganic oxide comprising a catalyst carrier selected from tin(Sn)-doped In2O3, fluorine(F)-doped SnO2, and antimony(Sb)-doped SnO2 and an oxide particle phase chemically bonded to the surface of the catalyst carrier.
    Type: Application
    Filed: July 17, 2007
    Publication date: January 31, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Jun TAMURA, Yoshihiko NAKANO, Wu MEI, Satoshi MIKOSHIBA
  • Publication number: 20070264919
    Abstract: A polishing pad includes a main body having a polishing surface and a backing that is affixed to the back surface of the main body. The elasticity of the main body is within the range of 600 psi-16000 psi and preferably within the range of 1600 psi-16000 psi when a compressive pressure of 2 psi-16 psi is applied, and the thickness of the main body is within the range of 0.5 mm-3.0 mm. The elasticity of the backing is lower than that of the main body and exceeds 300 psi when a compressive pressure of 2 psi-16 psi is applied.
    Type: Application
    Filed: July 16, 2007
    Publication date: November 15, 2007
    Inventors: Toshihiro Kobayashi, Toshihiro Izumi, Jun Tamura, Takuya Nagamine, Takashi Arahata
  • Publication number: 20070207360
    Abstract: An electrolyte membrane includes a porous membrane and a proton conductive inorganic material loaded in the porous membrane. The proton conductive inorganic material has a super strong acidity. The proton conductive inorganic material contains a first oxide and a second oxide bonded to the first oxide. The first oxide contains an element X formed of at least one element selected from the group consisting of Ti, Zr, Hf, Nb, Al, Ga, In, Si, Ge, Sn and Ce. The second oxide contains an element Y formed of at least one element selected from the group consisting of V, Cr, Me, W and B.
    Type: Application
    Filed: May 4, 2007
    Publication date: September 6, 2007
    Inventors: Jun Tamura, Yoshihiko Nakano, Wu Mei, Kazuhiro Yasuda
  • Publication number: 20070166590
    Abstract: An electrolytic membrane comprising a porous membrane substrate containing a cross-linked polymer electrolyte having at least a structural component shown by following chemical formula 1: wherein A represents a repeating unit having an aromatic hydrocarbon group substituted by at least a sulfonic acid group, B represents a repeating unit having one of a nitrogen-containing hetero ring compound residue, and the sulfate, hydrochloride or organic sulfonate thereof, C represents a repeating unit having a cross-linked group, and X, Y and Z represent mol fractions of respective repeating units in the chemical formula 1, with 0.34?X?0.985, 0.005?Y?0.49, 0.01?Z?0.495 and Y?X and Z?X, provided that, in the repeating unit A, a ratio of the aromatic hydrocarbon group substituted by at least a sulfonic acid group is 0.3 to 1.0, and the number of the sulfonic acid group in the aromatic hydrocarbon group is 1 to 3.
    Type: Application
    Filed: December 27, 2006
    Publication date: July 19, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshihiko Nakano, Hideo Ohta, Kazuhiro Yasuda, Jun Tamura
  • Patent number: 7241204
    Abstract: A polishing pad has a resin sheet having a flat surface and abrading particles fixed inside and on the surface of this resin sheet. Its tensile strength is in the range of 30 MPa or greater and 70 MPa or less and preferably in the range of 40 MPa or greater and 60 MPa or less. Its tensile tear elongation is in the range of 50% or less, preferably 20% or less and more preferably 5% or less. The average diameter of the primary particles of the abrading particles is in the range of 0.005 ?m or greater and less than 0.5 ?m, and preferably in the range of 0.005 ?m or greater and 0.2 ?m or less. The content of the abrading particles fixed to the resin sheet is 10 volume % or greater and 50 volume % or less, or preferably 10 volume % or greater and 24 volume or less.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 10, 2007
    Assignee: Nihon Micro Coating Co., Ltd.
    Inventors: Jun Watanabe, Takuya Nagamine, Jun Tamura, Takashi Arahata
  • Publication number: 20070134533
    Abstract: A proton conductive inorganic material includes oxide particles containing at least one element X selected from the group consisting of W, Mo, Cr, B and V, an oxide carrier carrying the oxide particles and containing at least one element Y selected from the group consisting of Sn, Hf, Ge, Ga, In, Ce and Nb.
    Type: Application
    Filed: March 27, 2006
    Publication date: June 14, 2007
    Inventors: Jun Tamura, Yoshihiko Nakano, Hideo Oota
  • Publication number: 20070082257
    Abstract: According to one embodiment, a catalyst layer of an electrode for a fuel cell has a proton conductive inorganic oxide containing an oxide superacid compound. The compound contains an element X (Titanium, Zirconium, Silicon, Tin, Hafnium, Germanium, Gallium, Indium, Cerium, Niobium or Aluminium) and an element Y (Tungsten, Molybdenum, Chromium, Boron or Vanadium). The catalyst layer also contains a reduction-oxidation metal catalyst or a carrier carrying a reduction-oxidation metal catalyst.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 12, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Jun Tamura, Yoshihiko Nakano, Wu Mei
  • Patent number: 7202471
    Abstract: A method of mass spectrometry. The method starts with gaining a total ion chromatogram by a mass spectrometer. An accumulation mass spectrum indicating vicinities of a desired peak top of the total ion chromatogram is displayed. The operator selects a desired mass peak from the displayed accumulation mass spectrum. Another mass chromatogram that is coincident in elution start time, maximum elution time, and elution end time with the mass chromatogram of the selected mass peak are extracted and selected out as a mass peak. Thus, a mass spectrum of a single component is reconstructed.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: April 10, 2007
    Assignee: JEOL Ltd.
    Inventors: Toshinobu Hondo, Jun Tamura
  • Publication number: 20070077408
    Abstract: A cleaning sheet has a foamed layer on the surface of a plastic base sheet with the thickness in the range of 25 ?m or more and 125 ?m or less. The foamed layer has average diameter of air bubbles in the range of 1 ?m or more and 50 ?m or less and preferably 30 ?m or less, compressibility in the range of 3% or more and 7% or less, compression recovery ratio in the range of 40% or more and 60% or less, and the Shore D hardness in the range of 20 degrees or more and 30 degrees or less.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 5, 2007
    Inventors: Hiromitsu Okuyama, Mitsuru Saito, Jun Tamura
  • Publication number: 20070054600
    Abstract: A polishing pad has a resin sheet having a flat surface and abrading particles fixed inside and on the surface of this resin sheet. Its tensile strength is in the range of 30MPa or greater and 70 MPa or less and preferably in the range of 40MPa or greater and 60MPa or less. Its tensile tear elongation is in the range of 50% or less, preferably 20% or less and more preferably 5% or less. The average diameter of the primary particles of the abrading particles is in the range of 0.005 ?m or greater and less than 0.5 ?m, and preferably in the range of 0.005 ?m or greater and 0.2 ?m or less. The content of the abrading particles fixed to the resin sheet is 10 volume % or greater and 50 volume % or less, or preferably 10 volume % or greater and 24 volume or less.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 8, 2007
    Inventors: Jun Watanabe, Takuya Nagamine, Jun Tamura, Takashi Arahata
  • Patent number: D535917
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: January 30, 2007
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Jun Tamura