Patents by Inventor Hitoshi Yamamoto

Hitoshi Yamamoto 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: 7829795
    Abstract: In at least one embodiment of the disclosure, a driving substrate includes a substrate having a first portion and a second portion formed surrounding the first portion. A flexible printed circuit is formed on the second portion. The flexible printed circuit includes a protruding portion extending to the first portion.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: November 9, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Takeo Kawase, Hitoshi Yamamoto, Takehisa Saeki, Tsutomu Miyamoto
  • Publication number: 20100259813
    Abstract: A display device having a display surface, comprises: a contact particle-containing layer including a wall portion with an inner surface for defining a space, contact particles electrically charged and provided within the space in a contact state that the contact particles are in contact with the inner surface of the wall portion, the contact particles having a hue, and a scattering medium for scattering light or a colored medium having a different hue from the hue of the contact particles which is provided within the space; and a pair of electrodes that, when applied with an electrical voltage, generate electrical fields to act on the contact particles, wherein the display device is configured so that when the electrical voltage is applied to between the pair of electrodes, the contact particles are moved along the inner surface of the wall portion while maintaining the contact state.
    Type: Application
    Filed: November 13, 2008
    Publication date: October 14, 2010
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Takeo Kawase, Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita
  • Publication number: 20100245984
    Abstract: An electrophoretic display sheet includes: a substrate; at least one kind of electrophoretic particles; an electrophoretic dispersion liquid containing the at least one kind of electrophoretic particles; a microcapsule having a shell for enclosing the electrophoretic dispersion liquid therein; a microcapsule-containing layer provided on a surface side of the substrate to contain the microcapsule; and a binder having a function of retaining the microcapsule and having viscosity under room temperature, the microcapsule-containing layer including the microcapsule and the binder; and the electrophoretic particles being contained in the electrophoretic dispersion liquid in a ratio of 30% to 60% wt. with respect to a weight of the electrophoretic dispersion liquid.
    Type: Application
    Filed: June 9, 2010
    Publication date: September 30, 2010
    Applicant: Seiko Epson Corporation
    Inventor: Hitoshi Yamamoto
  • Patent number: 7804638
    Abstract: An electrophoretic display sheet includes: a substrate; at least one kind of electrophoretic particles; an electrophoretic dispersion liquid containing the at least one kind of electrophoretic particles; a microcapsule having a shell for enclosing the electrophoretic dispersion liquid therein; a microcapsule-containing layer provided on a surface side of the substrate to contain the microcapsule; and a binder having a function of retaining the microcapsule and having viscosity under room temperature, the microcapsule-containing layer including the microcapsule and the binder; and the electrophoretic particles being contained in the electrophoretic dispersion liquid in a ratio of 30% to 60% wt. with respect to a weight of the electrophoretic dispersion liquid.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: September 28, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Hitoshi Yamamoto
  • Patent number: 7764420
    Abstract: A display device capable of easily and reliably obtaining an intermediate tone and reliably maintaining individual colors including the intermediate tone even at stoppage of application of an electrical voltage, a manufacturing method of a display device capable of easily and reliably manufacturing the display device, and an electronic apparatus provided with the display device are provided. The display device has a display surface.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: July 27, 2010
    Assignees: Seiko Epson Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Takeo Kawase, Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita
  • Patent number: 7764419
    Abstract: The preservation method of microcapsules for electrophoretic display devices according to the present invention includes preserving microcapsules for electrophoretic display devices in a water-based medium having an electric conductivity of 500 ?S/cm or lower. The preservation under such conditions makes it possible to preserve microcapsules for electrophoretic display devices over a long period of time without deteriorating their electrophoretic properties. The microcapsules for electrophoretic display devices, which have been preserved by the preservation method of the present invention, can be used, as its applications, for sheets for electrophoretic display devices and electrophoretic display devices using the sheets.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: July 27, 2010
    Assignees: Seiko Epson Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Hitoshi Yamamoto, Harunobu Komatsu, Mitsuo Kushino, Tomoyuki Kuwamoto
  • Patent number: 7733559
    Abstract: In at least one embodiment of the disclosure, an electrophoretic display sheet includes an electrophoretic display layer and a substrate provided with the electrophoretic display layer. An end portion of the substrate includes a chamfered edge. The electrophoretic sheet may be attached to a driving substrate.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 8, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Takeo Kawase, Hitoshi Yamamoto, Takehisa Saeki, Tsutomu Miyamoto
  • Patent number: 7712659
    Abstract: A novel card recognition system includes a computer having a card controller for exchanging data with a standard card that is compliant with a standard and a non-standard card that is not compliant with the standard, and a card adapter for connecting the non-standard card to the computer so that the non-standard card is recognized. The computer or card adapter includes a data converter having an input/output controller for the non-standard card and converting data of the non-standard card into data for the standard card, and an interface having an input/output controller for the standard card and connected to the data converter via a dedicated transmission path. A novel card recognition system includes: a plurality of card management systems, each including a card connector, a first controller, a first multiplexer, a card detector; a second controller; and a second multiplexer to assign the second controller to one card connector.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: May 11, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Yamamoto, Hiromasa Kusakabe
  • Patent number: 7704642
    Abstract: The disclosure discloses a polymer represented by the general formula, wherein Rp is a residue of a polymer of a compound having a polymerizable unsaturated bond, Q is an organic residue of n+1 valences and connected directly or through another group to Rp by means of a single bond, Mk+ is a cation of k valence, Z is an organic function group capable of forming an ionic bond with cation Mk+ or an organic function group having a coordination capability with Mk+, and m, n and k are integers of one or more. The disclosure also discloses an intermediate of the polymer mentioned above.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: April 27, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Shin Nishimura, Akira Satou, Takefumi Okumura, Makoto Morishima, Hitoshi Yamamoto, Norikazu Ueyama
  • Publication number: 20100097685
    Abstract: A display device comprises a microcapsule-containing layer including a plurality of microcapsules. A variation of the outer diameters of the microcapsules can be defined by an average value and a CV value. Each of the microcapsules is comprised of: a shell having an inner surface; contact particles electrically charged and provided within the shell in an contact state that the contact particles are in contact with the inner surface of the shell; and a scattering body for scattering light; or a colored particles having a different hue from the hue of the contact particles. The display device further comprises a pair of electrodes that when an electrical voltage is applied to between the pair of electrodes, electrical fields to act on the contact particles are generated. The average value of the outer diameters of the microcapsules is in the range of 20 to 60 ?m, and the CV value of the outer diameters of the microcapsules is 20% or less.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 22, 2010
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Takeo Kawase, Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita, Hironobu Hashimoto
  • Publication number: 20100097686
    Abstract: An electrophoretic sheet includes a substrate having one surface and the other surface, a microcapsule-containing layer comprised of a plurality of microcapsules, the microcapsule-containing layer provided on the other surface of the substrate, each of the plurality of microcapsules having a capsule body and an electrophoretic dispersion liquid contained in the capsule body, the electrophoretic dispersion liquid containing a plurality of electrophoretic particles of at least one color, and the capsule body having an inner circumferential surface and an outer circumferential surface, and at least one colored part provided on the external side of the inner circumferential surface of the capsule body of each of the plurality of microcapsules, and wherein each colored part has a color complementary to the color of the plurality of electrophoretic particles. By using the electrophoretic sheet mentioned above, it is possible to provide the increased whiteness in display of the electrophoretic particles.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 22, 2010
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Harunobu Komatsu, Hitoshi Yamamoto, Mitsuo Kushino, Tomoyuki Kuwamoto
  • Publication number: 20100030560
    Abstract: Disclosed is a speech recognition system in which a common data processing means performs speech recognition of a speech captured by a speech input means to generate recognition result hypotheses which is not biased to one of applications and an adaptation data processing means regenerates recognition result hypotheses, using adaptation data and adaptation processing for each application. The adaptation data processing means provides to each application the recognition result recalculated for each application.
    Type: Application
    Filed: March 22, 2007
    Publication date: February 4, 2010
    Applicant: NEC Corporation
    Inventor: Hitoshi Yamamoto
  • Publication number: 20100020385
    Abstract: The microcapsules for electrophoretic display devices according to the present invention each enclose a dispersion containing electrophoretic particles and a solvent in a shell having an inner shell made of a mercapto group-containing amino resin and an outer shell made of an epoxy resin. Alternatively, the microcapsules for electrophoretic display devices according to the present invention each have a capsule strength of 0.6 MPa or higher. These microcapsules are produced by dispersing a dispersion containing electrophoretic particles and a solvent as a core substance in a water-based medium, and subsequently forming at least one shell on the surface of the core substance. These microcapsules can be used, as their applications, for sheets for electrophoretic display devices, electrophoretic display devices using the sheets, and electronic equipments using the electrophoretic display devices.
    Type: Application
    Filed: December 4, 2007
    Publication date: January 28, 2010
    Inventors: Hitoshi Yamamoto, Harunobu Komatsu, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsuhita
  • Publication number: 20090315824
    Abstract: An electrophoretic display sheet comprising a display layer, a first electrode, and second electrodes. The display layer has a plurality of reservoir portions filled with a dispersion liquid containing particles. Each of the plurality of reservoir portions has predetermined positions. When an electric field having a direction is generated by applying a voltage to between the first electrode and the second electrodes, the particles are locally gathered to the predetermined positions of each of the plurality of reservoir portions so as to make rows of the particles along the direction of the electric field in the dispersion liquid. The electrophoretic display sheet is capable of exhibiting both superior responsiveness (responsibility) and superior color display performance with high contrast in changing a display color.
    Type: Application
    Filed: May 12, 2009
    Publication date: December 24, 2009
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita
  • Publication number: 20090313017
    Abstract: A framework in which a numerical value that represents a statistical appearance tendency of each of words in a language model is set with respect to the words not only as a constant, but also as an update function that changes in time, is included. The numerical value that represents the set statistical appearance tendency of a word is automatically updated in accordance with passage of time.
    Type: Application
    Filed: July 6, 2007
    Publication date: December 17, 2009
    Inventors: Satoshi Nakazawa, Hitoshi Yamamoto, Tasuku Kitade
  • Patent number: 7608310
    Abstract: The invention provides a liquid crystal composition that satisfies many characteristics among the characteristics such as a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, and a large specific resistance, and a liquid crystal display device containing the composition. The liquid crystal composition has a negative dielectric anisotropy and contains a first component containing a mono-fluorine-replaced liquid crystal compound having a specific structure and a second component containing a liquid crystal compound having two or more fluorines having a specific structure, and the liquid crystal display device contains the liquid crystal composition.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: October 27, 2009
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Norikatsu Hattori, Hitoshi Yamamoto, Hiroaki Fujita
  • Patent number: 7608199
    Abstract: A liquid crystal composition with a negative dielectric anisotropy includes at least one compound selected from the group of compounds represented by the following formula (1) as a first component, and at least one compound selected from the group of compounds represented by the following formulas (2-1) to (2-3) and (3-1) to (3-4) as a second component.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: October 27, 2009
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Norikatsu Hattori, Hitoshi Yamamoto
  • Patent number: 7606941
    Abstract: A receiving FIFO device can prevent a PCI bus from being occupied unnecessarily to enhance the performance of a whole system. An input control part checks in a third comparing part whether or not a received packet written in a memory part is an error packet on the basis of acknowledge information contained in a trailer part of the received packet. If the received packet is the error packet, the input control part supplies a signal EMPTY being HIGH to an output control device and cancels the received packet, thereby preventing the error packet from being transferred to a receiving DMA device. Furthermore, the input control part checks in a second comparing part whether or not the received packet written in the memory part belongs to a predetermined type of packet on the basis of tcode information contained in the first quadret of a header part of the received packet.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: October 20, 2009
    Assignee: Ricoh Company, Ltd.
    Inventor: Hitoshi Yamamoto
  • Publication number: 20090207477
    Abstract: An electrophoretic display device is provided. The electrophoretic display device comprises a first electrode provided on a surface of a first base member; second electrodes provided on a surface of a second base member so that the second electrodes are placed in a facing relationship with the first electrode; and a plurality of microcapsules provided between the first electrode and the second electrodes, the plurality of microcapsules each having an internal space filled with an electrophoretic dispersion liquid, and the electrophoretic dispersion liquid containing electrophoretic particles. The electrophoretic display device is configured so that spaces are formed between the adjacent microcapsules and between the first electrode and the second electrodes. The electrophoretic display device can exhibit superior display performance and can be driven with a low voltage and reduced electricity consumption. A method of manufacturing an electrophoretic display device and an electronic device are also provided.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita
  • Publication number: 20090208730
    Abstract: A method of manufacturing an electrophoretic display device is provided.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Applicants: SEIKO EPSON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Harunobu Komatsu, Hitoshi Yamamoto, Akira Matsumoto, Mitsuo Kushino, Tomoyuki Kuwamoto, Teruki Matsushita