Patents by Inventor Koji Tanabe

Koji Tanabe 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: 20110280024
    Abstract: The light guide sheet has a base of a light transmissive film, a first light-extracting section, and a second light-extracting section. The light-extracting sections having pits and projections are formed on a surface of the base. The base has a first color converter at least at a part corresponding to the position having the first light-extracting section in a thickness direction of the base. The first color converter converts light from a light source into a first color. Forming a color converter for predetermined color at each part corresponding to a plurality of the light-extracting sections allows the one color emitted from a light-emitting element to be converted into differently colored light beams at the light-extracting sections. The structure offers various patterns of illumination without increase in number of the light-emitting element.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 17, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: KOJI TANABE, NAOKI TATEHATA, HIROTOSHI WATANABE
  • Publication number: 20110250692
    Abstract: The present invention relates to a method for producing mammalian induced pluripotent stem cells, comprising introducing mammal-derived reprogramming factors comprising Oct3/4 and Nanog, or nucleic acids encoding Oct3/4 and Nanog, into mammal-derived somatic cells and thereby inducing induced pluripotent stem cells from the somatic cells, wherein the reprogramming factors comprise neither Sox2 nor nucleic acid encoding Sox2.
    Type: Application
    Filed: October 30, 2009
    Publication date: October 13, 2011
    Applicant: KYOTO UNIVERSITY
    Inventors: Shinya Yamanaka, Koji Tanabe
  • Patent number: 8025435
    Abstract: A light guide sheet and a movable contact element using the single sheet have a simple structure and can be variously illuminated. The light guide sheet includes irregular-shaped light extracting elements formed on a film-like base material; and light-transmissive, belt-shaped light guide parts each connecting a predetermined number of groups of the light extracting elements. In addition, dome-shaped movable contacts formed of a conductive sheet metal are arranged on the bottom surfaces of the light extracting elements.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: September 27, 2011
    Assignee: Panasonic Corporation
    Inventors: Naoki Tatehata, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe
  • Publication number: 20110193815
    Abstract: A touch panel includes a light-transmittable upper board, a light-transmittable upper resistive layer provided on a lower surface of the upper board, a light-transmittable lower resistive layer having an upper surface facing a lower surface of the upper resistive layer with a predetermined gap, a light-transmittable lower board provided on a lower surface of the lower resistive layer, plural conductive particles provided on at least one of the lower surface of the upper resistive layer and the upper surface of the lower resistive layer, and a transparent resin portion for fixing the conductive particles to the at least one of the lower surface of the upper resistive layer and the upper surface of the lower resistive layer. Upon having a display element provided on a lower surface of the lower board, this touch panel allows the display element to be easily visually recognized, and is inexpensive and operated easily.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 11, 2011
    Applicant: Panasonic Corporation
    Inventors: Koji Tanabe, Shoji Fujii, Hideo Iguchi
  • Publication number: 20110063240
    Abstract: A touch panel includes a plurality of belt-shaped upper electrodes extending from a plurality of upper conductive layers in the perpendicular direction thereto. The upper electrodes are formed of a copper foil, and thereby it is possible to form the upper electrodes which realize thinned line or narrowed line interval without spread or scratch, by using an etching process or the like. The overall miniaturization or increase in an operation region cannot only be implemented, but stable connection to electronic circuits of a device can be also performed, thereby obtaining the touch panel which can be reliably operated.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 17, 2011
    Inventor: Koji TANABE
  • Patent number: 7897889
    Abstract: A movable contact element including a lower sheet having a bottom surface, to which a substantially dome-shaped movable contact is bonded, is provided. The movable contact is made of a conductive thin metal plate, and an upper sheet with a light reflection property is disposed above the lower sheet. A space is formed between the lower sheet and the upper sheet, and a light transmitting portion is provided at the upper sheet. Light of a light emitting element from the side surface of the sheet propagates through the space between the upper sheet and the lower sheet with a light reflection property, while being reflected in a vertical direction, and lighting is performed through the light transmitting portions. Such a structure can perform lighting without unevenness by using one or two light emitting elements.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: March 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Yousuke Chikahisa, Koji Tanabe
  • Publication number: 20110025204
    Abstract: [Problems] A mercury-free metal halide lamp improved in light beam maintaining rate by limiting an excessive temperature rise at the upper portion of an arc tube at starting, a metal halide lamp lighting device using this and a head light. [Means of Solving Problems] The metal halide lamp MHL comprises a translucent airtight container (1) having a discharge space (1c) inside thereof, the portion thereof facing the center part having a wall-thickness of at least 1.7 mm, a pair of electrodes (1b) sealed in the discharge space so as to face each other across a gap, and discharge medium sealed so as to contain a halide compound as a light emitting metal and rear gas but not to contain mercury (Hg) intrinsically, wherein a lamp voltage ratio V16/V0 satisfies V16/V0?1.
    Type: Application
    Filed: July 26, 2006
    Publication date: February 3, 2011
    Inventors: Makoto Deguchi, Koji Tanabe
  • Patent number: 7851717
    Abstract: A light-guide sheet includes a light transmissive film substrate, and luminescent protrusions formed at predetermined points on the substrate. At least one of the substrate and each of the luminescent protrusions is colored to a color tone that absorbs yellow light more than blue light. Alternatively, a reflective layer colored to a color tone that absorbs yellow light more than blue light is provided on at least one of the top and bottom faces of the substrate.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: December 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Naoki Tatehata, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe, Hirotoshi Watanabe
  • Patent number: 7830366
    Abstract: The touch panel of the present invention has a thermally color-changing portion in the vicinity of a connecting portion which is to be bonded by heat. It can be easily checked whether the heat press has been performed at a predetermined temperature when the wiring board is connected to the top and bottom substrates, based on the degree of coloring of the thermally color-changing portion. This allows the touch panel to be manufactured simply and to ensure reliable electrical contact and separation.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: November 9, 2010
    Assignee: Panasonic Corporation
    Inventors: Koji Tanabe, Shoji Fujii
  • Patent number: 7820294
    Abstract: A touch panel includes a light-transmittable upper substrate, a light-transmittable upper resistor layer on a lower surface of the upper substrate, a light-transmittable lower substrate, a light-transmittable lower resistor layer on an upper surface of the lower substrate, an adhesive layer on an upper surface of the upper substrate, and a light-transmittable plate on the adhesive layer. The upper substrate is made of material having oxygen and nitrogen removed therefrom. The lower resistor layer faces the upper resistor layer by a distance. The light-transmittable plate disables oxygen and nitrogen to pass through the plate substantively. Even being used in high temperatures, this touch panel does not produce an air bubble in the adhesive layer, hence allowing a user to clearly view a display device through the touch panel.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: October 26, 2010
    Assignee: Panasonic Corporation
    Inventors: Shoji Fujii, Kenichi Matsumoto, Koji Tanabe
  • Publication number: 20100207907
    Abstract: In a touch panel, one of conductive layers on a bottom of an upper substrate and on a top of a lower substrate is formed of belt-shaped conductive layers. The other is a single conductive layer facing the belt-shaped conductive layers. The single conductive layer is provided with a pair of electrodes in positions corresponding to both ends in a direction where the belt-shaped conductive layers extend. When the upper substrate is pressed while a voltage is applied between the pair of electrodes, the top and lower conductive layers contact with each other. Then, a voltage value corresponding to the pressed position in the direction where the belt-shaped conductive layers extend is generated from any of the belt-shaped conductive layers. From the voltage value and the position of the belt-shaped conductive layer from which the voltage value is generated, a pressed position on the upper substrate can be detected.
    Type: Application
    Filed: April 27, 2010
    Publication date: August 19, 2010
    Inventors: Koji TANABE, Hirotoshi Watanabe, Hidetoshi Hiraoka, Kenichi Matsumoto
  • Publication number: 20100187077
    Abstract: A movable contact unit includes a light-guide sheet, a cover sheet, a movable contact, and a light-transmissive light-guide portion. The light-guide sheet includes a film-shaped substrate, and a convex and concave luminescent portion provided on the substrate. The cover sheet faces the substrate. A dome-shaped resilient movable contact made of a thin metal sheet is attached to the cover sheet at a position corresponding to the luminescent portion. The light-guide portion is provided on the cover sheet at a position other than an area where the movable contact is disposed or on the light-guide sheet at a position other than an area where the light-guide portion is disposed. If the light-guide portion is provided on the light-guide sheet, the movable contact may be attached to the light-guide sheet without using the cover sheet.
    Type: Application
    Filed: February 20, 2009
    Publication date: July 29, 2010
    Inventors: Naoki Tatehata, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe
  • Publication number: 20100182276
    Abstract: In a touch panel, upper conductive layers on a bottom surface of an upper substrate and lower conductive layers on a top surface of a lower substrate are formed in belt shapes and extend in directions intersecting each other. End portions of the upper conductive layers are connected by an upper resistive layer, and end portions of the lower conductive layers are connected by a lower resistive layer. Then, a voltage is applied between ends of the lower resistive layer and the upper resistive layer sequentially, and voltages at the end portions of the upper resistive layer and the lower resistive layer are detected. Pressed positions can be detected with such a simple configuration.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 22, 2010
    Inventors: Koji TANABE, Kenichi MATSUMOTO
  • Publication number: 20100182266
    Abstract: In a touch panel, one of conductive layers on a bottom of an upper substrate and on a top of a lower substrate is formed of belt-shaped conductive layers. The other is a single conductive layer facing the belt-shaped conductive layers. The single conductive layer is provided with a pair of electrodes in positions corresponding to both ends in a direction where the belt-shaped conductive layers extend. When the upper substrate is pressed while a voltage is applied between the pair of electrodes, the top and lower conductive layers contact with each other. Then, a voltage value corresponding to the pressed position in the direction where the belt-shaped conductive layers extend is generated from any of the belt-shaped conductive layers. From the voltage value and the position of the belt-shaped conductive layer from which the voltage value is generated, a pressed position on the upper substrate can be detected.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 22, 2010
    Inventor: Koji TANABE
  • Patent number: 7710406
    Abstract: A touch panel includes a first substrate, a second substrate, a wiring substrate provided with a plurality of wiring patterns formed thereon, and an anisotropic conductive adhesive layer. The first substrate has a first conductive layer and first electrodes extending from two opposite sides of the first conductive layer. The second substrate has a second conductive layer confronting the first surface with a space, and second electrodes extending from two opposite sides of the second conductive layer. The anisotropic conductive adhesive layer connects a terminal portion of the wiring patterns to at least one of the first electrodes and the second electrodes. The wiring substrate has a slit or an aperture between the wiring patterns at one end thereof. The touch panel of this structure is easy to produce, and provides reliable operation and electrical connection and separation.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: May 4, 2010
    Assignee: Panasonic Corporation
    Inventors: Shoji Fujii, Koji Tanabe
  • Patent number: 7692728
    Abstract: Disclosed here is a touch panel with improved visibility. The polarizing plate of the touch panel has a laminated structure in which the polarizing layer is sandwiched between the upper protective layer and the lower protective layer. Of the three layers, the lower protective layer is formed as a phase-difference layer with ΒΌ wavelength made of a cycloolefin-based polymer. The structure protects the polarizing plate from distortion and deterioration, offering good visibility. At the same time, the structure above contributes to a reduced parts count and accordingly a cost-reduced touch panel.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: April 6, 2010
    Assignee: Panasonic Corporation
    Inventors: Kenichi Matsumoto, Koji Tanabe
  • Patent number: 7679609
    Abstract: A touch panel including a substrate body having a wave plate, a first elastic layer and a first substrate, a second substrate facing to the substrate body, a first conductive layer, a second conductive layer, a second elastic layer and a polarizing plate. A first conductive layer is formed at a face, which is a side of the second substrate, of the substrate body. A second conductive layer is formed at a face of the second substrate and faces the first conductive layer with a predetermined space therebetween. The second elastic layer is formed at a face, which is an opposite side of the first conductive layer, of the substrate body. The polarizing plate is formed at a face, which is an opposite side of the second substrate, of the second elastic layer. This structure offers a touch panel which is resistant to crack or damage to the first conductive layer that may occur when an end of the touch panel is pressed, and provides reliable operation and good viewability.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: March 16, 2010
    Assignee: Panasonic Corporation
    Inventors: Kenichi Matsumoto, Koji Tanabe
  • Publication number: 20090323357
    Abstract: A light guide sheet and a movable contact element using the sheet are inexpensive and provide adequate illumination. In the light guide sheet, light-transmissive upper conductive layers, reflective layers, and lower conductive layers are laminated in this order in predetermined positions on the bottom surface of a light-transmissive, film-like cover sheet. The reflective layers have reverse particles dispersed therein, whose top and bottom surfaces are reversed between light color and dark color.
    Type: Application
    Filed: April 30, 2009
    Publication date: December 31, 2009
    Applicant: Panasonic Corporation
    Inventor: Koji Tanabe
  • Patent number: 7619358
    Abstract: A dispersion-type EL device includes a short-bar contact, a first insulating layer, a back electrode layer, a dielectric layer, a luminescent layer, and an optically transparent electrode layer, which are sequentially formed on a temporary substrate that has been processed with an exfoliation treatment. This configuration realizes a reduction in size in a thickness direction. Furthermore, an illuminated switch unit is provided, in which a dispersion-type EL device peeled off from a temporary substrate and a wiring board having a comb-like contact are connected to each other.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: November 17, 2009
    Assignee: Panasonic Corp.
    Inventors: Tamotsu Yamamoto, Masaki Sawada, Koji Tanabe
  • Publication number: 20090268454
    Abstract: A light guide sheet and a movable contact element using the single sheet have a simple structure and can be variously illuminated. The light guide sheet includes irregular-shaped light emitting elements formed on a film-like base material; and light-transmissive, belt-shaped light guide parts each connecting a predetermined number of groups of the light emitting elements. In addition, dome-shaped movable contacts formed of a conductive sheet metal are arranged on the bottom surfaces of the light emitting elements. This structure allows the light emitting elements to emit light of different colors from each other or to emit light with a time difference by making the light guide parts introduce the light of the light-emitting devices corresponding thereto.
    Type: Application
    Filed: February 25, 2009
    Publication date: October 29, 2009
    Inventors: Naoki TATEHATA, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe