Patents by Inventor Tomohiro Yamashita

Tomohiro Yamashita 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: 20080274286
    Abstract: An ink having a cyan color is provided which can form images excellent in ozone resistance in such a high level as to exceed anticipation and having a preferable color tone. The ink includes at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound having a copper phthalocyanine skeleton with a specific structure and the second coloring material is a compound having a copper phthalocyanine skeleton with a specific structure that is different from the first coloring material.
    Type: Application
    Filed: April 28, 2008
    Publication date: November 6, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomohiro Yamashita, Jun Yoshizawa, Daiji Okamura
  • Publication number: 20080262687
    Abstract: An electric parking brake system includes an electric parking brake mechanism that includes a brake which suppresses rotation of a wheel and an electric motor which applies or releases the brake, and that maintains a vehicle at a standstill while the brake is applied. A parking switch selectively outputs an application command for applying the brake and a release command for releasing the brake in response to an operation of an operating portion for the parking switch. A parking switch malfunction determination unit determines whether the parking switch malfunctions, and a parking brake automatic control unit automatically applies the brake by operating the electric motor when an ignition switch of the vehicle is turned off in response to an operation of an operating portion for the ignition switch, in a case where the parking switch malfunction determination unit determines that the parking switch malfunctions.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 23, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kozo Fujita, Tomohiro Yamashita, Hideo Kondo, Hidehiro Yamamoto
  • Patent number: 7397639
    Abstract: A magnetic detecting element, which can suppress change in output asymmetry even if the magnetization direction of a pinned magnetic layer is changed 180°, is provided. The magnetic-film-thickness of a second free magnetic layer is increased so as to be greater than that of a first free magnetic layer and offset the torque applied to the second free magnetic layer with that applied to the first free magnetic layer when the sensing current magnetic field occurs. Thus, change in the magnetization direction of the free magnetic layer before and after a sensing current is applied in the magnetic detecting element can be suppressed. The orthogonal state between the free magnetic layer and the pinned magnetic layer is maintained even when a sensing current in the same direction as that before the occurrence is applied in the magnetic detecting element wherein pin inversion occurred, and the output asymmetry is maintained suitably.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: July 8, 2008
    Assignee: TDK Corporation
    Inventors: Tomohiro Yamashita, Naoya Hasegawa, Eiji Umetsu, Ryo Nakabayashi, Akira Takahashi
  • Publication number: 20080145709
    Abstract: A thin film magnetic head is disclosed that is capable of preventing the contact between an element portion and a recording medium and a variation in the amount of protrusion of the element portion. A thin film magnetic head includes: a reproducing element; a recording element that is formed on the reproducing element; a heater that is supplied with power and generates heat to expand at least one of the reproducing element and the recording element such that the reproducing element and/or the recording element protrude toward a recording medium; and a temperature correcting resistor that is connected in parallel to the heater and has a negative resistance temperature coefficient.
    Type: Application
    Filed: November 14, 2007
    Publication date: June 19, 2008
    Inventors: Tomohiro Yamashita, Yuya Kakuhari
  • Publication number: 20080113480
    Abstract: A semiconductor substrate is covered with a resist mask and then an opening for exposing a whole upper surface of a polysilicon gate is formed by photo lithography and dry etching. Thereafter, nitrogen ions are implanted into the polysilicon gate through the opening. Implantation energy at this time is set so that the implanted ions may not break through the polysilicon gate.
    Type: Application
    Filed: November 14, 2007
    Publication date: May 15, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Yukio NISHIDA, Takashi Hayashi, Tomohiro Yamashita, Katsuyuki Horita, Katsumi Eikyu
  • Patent number: 7336450
    Abstract: A magnetic head contains a write magnetic head and a read magnetic head. The write magnetic head includes a lower core layer, an upper core layer arranged over the lower core layer, and a coil layer for applying a magnetic field to the lower and upper core layers. The read magnetic head includes an upper shield layer, a lower shield layer, and a reproducing device arranged between the upper shield layer and the lower shield layer. The upper shield layer has a dimension A in a direction of track width and a dimension B in a direction of height and has an aspect ratio B/A ranging from 0.6 to 1.2. The dimension A ranges from 75 ?m to 150 ?m.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: February 26, 2008
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomohiro Yamashita, Akira Takahashi, Shuji Yanagi
  • Patent number: 7297197
    Abstract: An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: November 20, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Jinnou, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Daiji Okamura, Tomohiro Yamashita
  • Patent number: 7270701
    Abstract: An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: September 18, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Jinnou, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Daiji Okamura, Tomohiro Yamashita
  • Patent number: 7247194
    Abstract: An ink jet ink is disclosed which includes water, a water-soluble organic solvent and a coloring material and has excellent properties. The coloring material is a specific phthalocyanine derivative and is contained in a specific amount in the ink. The water-soluble organic solvent includes a specific amount of 2-pyrrolidone. In addition, a d75 value is in a specific range where the d75 value corresponds to 75% of a dispersion distance distribution, measured by a small angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 0.5 mass %.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: July 24, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daiji Okamura, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Tomohiro Yamashita, Masanori Jinnou
  • Publication number: 20070138574
    Abstract: The top ends of polysilicon gate electrodes with different gate lengths are formed so as to be equally high and lower than the top end of the side wall. A metal film is formed so as to cover the polysilicon gate electrodes, followed by silicidation by thermal treatment. Since the top ends of the polysilicon gate electrodes are formed lower than the top end of the side wall, a silicon side reaction is not accelerated even in the case of a fine gate length, and proceeds in a one-dimensional manner. As a result, full-silicide gate electrodes having a uniform metal composition ratio can be stably formed even using the polysilicon gates with different gate lengths.
    Type: Application
    Filed: November 27, 2006
    Publication date: June 21, 2007
    Applicant: Renesas Technology Corp.
    Inventors: Katsumi EIKYU, Tomohiro Yamashita, Katsuyuki Horita, Takashi Hayashi
  • Publication number: 20070125262
    Abstract: An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.
    Type: Application
    Filed: January 8, 2007
    Publication date: June 7, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Masanori Jinnou, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Daiji Okamura, Tomohiro Yamashita
  • Patent number: 7226498
    Abstract: To provide an ink jet yellow ink having a favorable color tone and capable of providing an image excellent in humidity resistance. The ink jet yellow ink of the present invention is an ink jet yellow ink to be used in combination with an ink jet light-color ink comprising at least a coloring material and a water-soluble organic solvent, wherein the coloring material of the ink jet yellow ink is a compound represented by the following General Formula (I) or a salt thereof, and wherein the ink jet light-color ink satisfies a specific condition; wherein M's each independently represent a hydrogen atom, an alkali metal, an alkali earth metal, a cation of organic amine or an ammonium ion, and n's each independently represent 1 or 2; and Y?2.8X+10.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: June 5, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Yamashita, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura
  • Publication number: 20070111427
    Abstract: The semiconductor device which can apply the stress application technology to a channel part by a liner film to MISFET including a full silicidation gate electrode, and its manufacturing method are realized. The first liner silicon nitride film is formed on the semiconductor substrate MISFET formed. Insulating films, such as a silicon oxide film, are formed on the first liner silicon nitride film so that it may fully fill up the side of a gate electrode. Next, flattening processing is performed to an insulating film and the first liner silicon nitride film, and a polysilicon gate electrode is exposed. An insulating film is removed leaving the first liner silicon nitride film. The full silicidation of the exposed gate electrode is done, and the second liner silicon nitride film that covers the first liner silicon nitride film and the exposed full silicidation gate electrode is formed.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 17, 2007
    Inventors: Tomohiro Yamashita, Yukio Nishida, Hidekazu Oda
  • Patent number: 7201791
    Abstract: There is provided an ink jet light-color ink which is excellent in color developability and is capable of achieving compatibility between environmental gas resistance and bronze resistance. The ink jet light-color ink to be used in combination with ink jet deep-color ink has a relatively large coloring material content, and comprises at least water, a water-soluble organic solvent, and a coloring material. The ink jet deep-color ink and the ink jet light-color ink satisfy specific conditions.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: April 10, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daiji Okamura, Yoshihisa Takizawa, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Yoshihide Aikawa, Tomohiro Yamashita, Masanori Jinnou
  • Publication number: 20070007602
    Abstract: The technology which can control a threshold value appropriately, adopting the material which fitted each gate electrode of the MOS structure from which a threshold value differs without making the manufacturing process complicated, and does not make remarkable diffusion to the channel region from the gate electrode is offered. The PMOS transistor has a gate electrode GP, and an N type well which confronts each other via a gate insulating film with this, and the NMOS transistor has a gate electrode GN, and an P type well which confronts each other via a gate insulating film with this. While gate electrode GN includes a polycrystalline silicon layer, gate electrode GP is provided with the laminated structure of a metal layer/polycrystalline silicon layer.
    Type: Application
    Filed: July 3, 2006
    Publication date: January 11, 2007
    Applicant: Renesas Technology Corp.
    Inventors: Hidekazu Oda, Takahisa Eimori, Jiro Yugami, Takahiro Maruyama, Tomohiro Yamashita, Yukio Nishida, Shinichi Yamanari, Takashi Hayashi, Kenichi Mori
  • Patent number: 7160372
    Abstract: There is provided ink jet ink containing at least a coloring material, in which: the coloring material is a compound represented by the following general formula (I) or a salt thereof; a content (weight %) of the coloring material is 3.0 weight % or more with respect to a total weight of the ink jet ink; in a dispersion distance distribution, measured by a small-angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 3.0 weight %, a dispersion distance d75 value corresponding to 75% of the distribution is 6.50 nm or more and 7.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: January 9, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Yoshizawa, Shin-ichi Sato, Kunihiko Nakamura, Daiji Okamura, Tomohiro Yamashita, Masanori Jinnou
  • Publication number: 20060152569
    Abstract: An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 13, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Masanori Jinnou, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Daiji Okamura, Tomohiro Yamashita
  • Publication number: 20060119685
    Abstract: To provide an ink jet yellow ink having a favorable color tone and capable of providing an image excellent in humidity resistance. The ink jet yellow ink of the present invention is an ink jet yellow ink to be used in combination with an ink jet light-color ink comprising at least a coloring material and a water-soluble organic solvent, wherein the coloring material of the ink jet yellow ink is a compound represented by the following General Formula (I) or a salt thereof, and wherein the ink jet light-color ink satisfies a specific condition; General Formula (I): wherein M's each independently represent a hydrogen atom, an alkali metal, an alkali earth metal, a cation of organic amine or an ammonium ion, and n's each independently represent 1 or 2; and Y?2.8X+10 Expression (1).
    Type: Application
    Filed: January 31, 2006
    Publication date: June 8, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Tomohiro Yamashita, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura
  • Publication number: 20060119682
    Abstract: There is provided an ink jet light-color ink which is excellent in color developability and is capable of achieving compatibility between environmental gas resistance and bronze resistance. The ink jet light-color ink to be used in combination with ink jet deep-color ink has a relatively large coloring material content, and comprises at least water, a water-soluble organic solvent, and a coloring material. The ink jet deep-color ink and the ink jet light-color ink satisfy specific conditions.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 8, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Daiji Okamura, Yoshihisa Takizawa, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Yoshihide Aikawa, Tomohiro Yamashita, Masanori Jinnou
  • Publication number: 20060103705
    Abstract: An ink jet ink contains at least a coloring material and a specific water-soluble organic solvent and has both excellent color developability and excellent humidity resistance. The coloring material exhibits a small (9 or less) color difference ?E value which is determined by a method including a series of specific steps and is represented as the square root of (L1-L2)2+(a1-a2)2+(b1-b2)2. The specific water-soluble organic solvent has an evaporation rate X smaller than that of water and a moisture absorptivity Y, the values of X and Y satisfying the relation of Y?2.8X+10. The content of the specific water-soluble organic solvent is 50 mass % or more of the total amount of water-soluble organic solvents contained in the ink.
    Type: Application
    Filed: December 30, 2005
    Publication date: May 18, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Jun Yoshizawa, Shin-ichi Sato, Kunihiko Nakamura, Tomohiro Yamashita