Patents by Inventor Hiroshi Hamada

Hiroshi Hamada 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: 20160119719
    Abstract: In an embodiment, an electroacoustic converter (earphone 100) has an enclosure 41, piezoelectric sounding body 32, electromagnetic sounding body 31, and passage 35. The piezoelectric sounding body 32 includes a vibration plate 321 having a periphery supported directly or indirectly on the enclosure 41, and a piezoelectric element 322 placed at least on one side of the vibration plate 321. The piezoelectric sounding body 32 divides the interior of the enclosure 41 into a first space S1 and a second space S2. The electromagnetic sounding body 31 is placed in the first space S1. A passage 35 is provided in or around the piezoelectric sounding body 32, to connect the first space S1 and second space S2. The electroacoustic converter is capable of obtaining desired frequency characteristics easily.
    Type: Application
    Filed: September 2, 2015
    Publication date: April 28, 2016
    Inventors: Yutaka DOSHIDA, Yukihiro MATSUI, Hiroshi HAMADA
  • Publication number: 20160119721
    Abstract: In an embodiment, an electroacoustic converter has an enclosure, piezoelectric sounding body, electromagnetic sounding body, passage, and wiring members. The piezoelectric sounding body includes a first vibration plate supported directly or indirectly on the enclosure, and a piezoelectric element placed at least on one side of the first vibration plate. The piezoelectric sounding body divides the interior of the enclosure into a first space and a second space. The electromagnetic sounding body has a second vibration plate and is placed in the first space. The passage is provided at the piezoelectric sounding body or around the piezoelectric sounding body, to connect the first space and second space. The wiring members are electrically connected to the piezoelectric element and led out toward the electromagnetic sounding body, from the piezoelectric element, through the first space or second space.
    Type: Application
    Filed: October 8, 2015
    Publication date: April 28, 2016
    Inventors: Yutaka DOSHIDA, Yukihiro MATSUI, Hiroshi HAMADA
  • Patent number: 9312965
    Abstract: An optical receiver module capable of increasing the range in which the error in distance between a collecting lens and a light receiving section is allowed is provided. In the optical receiver module according to the invention, the optical receiver includes a semiconductor substrate to which the light from the collecting lens is input, and through which the light passes, and a light receiving section disposed on a side (a reverse side) of the semiconductor substrate, the side being further from the collecting lens, and adapted to receive the light transmitted through the semiconductor substrate, and then convert the light into an electrical signal. On a side (an obverse side) of the semiconductor substrate, the side being nearer to the collecting lens, there is formed a lens surface adapted to converge light from the collecting lens toward the light receiving section.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: April 12, 2016
    Assignee: OCLARO JAPAN, INC.
    Inventors: Koki Iemura, Takashi Toyonaka, Hiroshi Hamada
  • Patent number: 9035407
    Abstract: Provided is a receiver module, including: a semiconductor light receiving element including an electrode; and a sub-mount including: an electrical wiring joined to the electrode with solder; and a trap region arranged around a joining surface of the electrical wiring, the trap region retaining solder by solder wetting.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: May 19, 2015
    Assignee: Oclaro Japan, Inc.
    Inventors: Hiroshi Hamada, Takashi Toyonaka
  • Patent number: 9029970
    Abstract: Provided is a semiconductor light receiving device including: a semiconductor substrate; a semiconductor layer laminated on the semiconductor substrate and including an upper surface portion; a reflecting film formed to cover the upper surface portion of the semiconductor layer and including a principal reflecting region and an upper surface; and an upper electrode formed to cover at least one portion of the upper surface of the reflecting film, and including a junction portion extending through the reflecting file to be provided in contact with the upper surface portion of the semiconductor layer, the junction portion of the upper electrode surrounding a portion of a circumference of the principal reflecting region of the reflecting film, the principal reflecting region being connected to a region of the reflecting film located outside the junction portion, in which the semiconductor light receiving device detects light entering from another side of the semiconductor substrate.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 12, 2015
    Assignee: Oclaro Japan, Inc.
    Inventors: Ryu Washino, Yasushi Sakuma, Hiroshi Hamada
  • Patent number: 8994692
    Abstract: Provided is a touch panel system capable of reliably removing a wide variety of noises. The touch panel system (1p) includes a subtracting section (41a) which receives output signals from the sense lines (33) and finds differences between the capacitances in a direction in which each of drive lines (35) extends, as the differences in signal between the respective pairs of the sense lines (33) adjacent to each other. The subtracting section (41a) obtains a difference signal value between the sense lines adjacent to each other.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: March 31, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Yumoto, Hiroshi Hamada
  • Patent number: 8987655
    Abstract: An optical module includes a light-receiving element configured to convert an incident optical signal to an electric signal. The light-receiving element includes a mesa part configured to laminate at least a first semiconductor layer, a light absorption semiconductor layer that absorbs an optical signal entering from a light reception surface, and a second semiconductor layer. The light-receiving element also includes an electrode part disposed on a top of the mesa part and a wiring part that covers a part of a side surface of the mesa part. The optical module includes a lens configured to condense an optical signal from an optical fiber onto the light reception surface. The wiring part is disposed at a position based on an intensity distribution of the optical signal on the light reception surface.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: March 24, 2015
    Assignee: Oclaro Japan, Inc.
    Inventors: Michihide Sasada, Hiroshi Hamada, Masato Shishikura
  • Publication number: 20140360655
    Abstract: An optical-sheet manufacturing device 1 is provided with a first belt-shaped mold S1, a second belt-shaped mold S2, first and second supply units that supplies resins to the belt-shaped molds S1 and S2, respectively, and first and second embossing units that embosses the supplied resins on the first and second belt-shaped molds S1 and S2 to form first and second embossed sheets A? and B?. The optical-sheet manufacturing device is characterized in that the first embossed sheet A? embossed on the first belt-shaped mold S1 and the second embossed sheet B? embossed on the second belt-shaped mold S2 are shifted by the rotation of the first belt-shaped mold S1 and the second belt-shaped mold S2 and the first embossed sheet A? and the second embossed sheet B? are sandwiched between the first belt-shaped mold S1 and the second belt-shaped mold S2 and are laminated.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 11, 2014
    Inventors: Keiji Amemiya, Ikuo Mimura, Kiyohito Hiromitsu, Kenichiro Naka, Hiroshi Hamada
  • Patent number: 8907266
    Abstract: A light-receiving device array includes a photodiode array that is provided with plural light-receiving sections each of which includes a first conductivity type electrode and a second conductivity type electrode, and a carrier, wherein the carrier includes plural pair of electric lines each of which is formed from a first electric line connected to the first conductivity type electrode of each light-receiving section, and a second electric line connected to the second conductivity type electrode of the light-receiving section, a first ground electrode that extends between one pair of electric lines of the plural pair of electric lines and a pair of electric lines adjacent to the one pair of electric lines, and a second ground electrode that is formed on a part of the rear surface and is electrically connected to the first ground electrode.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: December 9, 2014
    Assignee: Oclaro Japan, Inc.
    Inventors: Takashi Toyonaka, Takuma Ban, Hiroshi Hamada
  • Patent number: 8896576
    Abstract: A touch panel includes: an infrared light transmitting material through which infrared light is transmitted and which has a surface as a touch surface (20) touched by a detection subject; area sensors (3) including photo sensor elements (4) below a touch region, which is touched by the detection subject, of the infrared light transmitting material; and infrared light sources (1) provided outside the touch region, the infrared light sources (1) emitting infrared light along said surface of the infrared light transmitting material such that an entire circumference of the detection subject touching the touch surface (20) is irradiated with the infrared light, the touch panel detecting a position touched by the detection subject so that the photo sensor element (4) receives, among infrared light emitted by the infrared light sources (1) along said surface, infrared light reflected by the detection subject and transmitted through the infrared light transmitting material.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: November 25, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinichi Miyazaki, Hiroshi Hamada, Mikihiro Noma, Kengo Takahama, Masakazu Wada, Norikazu Hohshi
  • Patent number: 8884922
    Abstract: A display device includes a touch panel and displays stereoscopic images with reducing its thickness and weight. The display device includes a liquid crystal display panel 20, a switching liquid crystal panel 30 and a touch panel 50. The switching liquid crystal panel 30 is provided on a display surface side of the display panel 20 and switches a display mode between two-dimensional display and three-dimensional display. The touch panel 50 is provided on the display surface side of the display panel 20. The touch panel 50 and the switching liquid crystal panel 30 commonly include one common board 32 and are configured as one component. A touch panel transparent electrode 51 and a switching liquid crystal panel transparent electrode 33 are provided on the common board 32. The switching liquid crystal panel transparent electrode 33 applies a voltage to liquid crystals of the switching liquid crystal panel 30.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Hamada, Akira Imai, Tomoo Takatani
  • Patent number: 8866352
    Abstract: An alternator for a vehicle is provided which is equipped with a heat dissipator and a cooling air generator. The heat dissipator is disposed in a rectifier to cool rectifying devices. The cooling air generator generates a flow of cooling air to the heat dissipator. The heat dissipator has a plurality of sub-fins formed thereon. Each of the sub-fins is defined by a combination of a protrusion and a recess. The protrusions are formed on one of opposed major surfaces of the heat dissipator, while the recesses are formed on the other major surface, one in coincidence with each of the protrusions in a thickness-wise direction of the heat dissipator. This permits the heat dissipator to be pressed to form the protrusions and the recesses to make the sub-fins simultaneously, thus allowing a heat-dissipating area to be increased to ensure a desired degree of heat capacity thereof.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: October 21, 2014
    Assignee: DENSO CORPORATION
    Inventors: Kazuyoshi Konaya, Hiroshi Hamada, Mikio Mashino, Seiji Kondoh
  • Publication number: 20140253508
    Abstract: Provided is a touch panel system capable of reliably removing a wide variety of noises. The touch panel system (1p) includes a subtracting section (41a) which receives output signals from the sense lines (33) and finds differences between the capacitances in a direction in which each of drive lines (35) extends, as the differences in signal between the respective pairs of the sense lines (33) adjacent to each other. The subtracting section (41a) obtains a difference signal value between the sense lines adjacent to each other.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 11, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Manabu Yumoto, Hiroshi Hamada
  • Patent number: 8728360
    Abstract: [Object] An apparatus and a method for producing optical sheeting with which increased productivity can be achieved while maintaining the accuracy of produced optical sheeting.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: May 20, 2014
    Assignee: Nippon Carbide Industries Co., Inc.
    Inventors: Ikuo Mimura, Chihiro Hayashi, Akihiro Mathuda, Hiroshi Hamada, Naotake Osaki
  • Publication number: 20140133871
    Abstract: An optical receiver module capable of increasing the range in which the error in distance between a collecting lens and a light receiving section is allowed is provided. In the optical receiver module according to the invention, the optical receiver includes a semiconductor substrate to which the light from the collecting lens is input, and through which the light passes, and a light receiving section disposed on a side (a reverse side) of the semiconductor substrate, the side being further from the collecting lens, and adapted to receive the light transmitted through the semiconductor substrate, and then convert the light into an electrical signal. On a side (an obverse side) of the semiconductor substrate, the side being nearer to the collecting lens, there is formed a lens surface adapted to converge light from the collecting lens toward the light receiving section.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: Oclaro Japan, Inc.
    Inventors: Koki IEMURA, Takashi TOYONAKA, Hiroshi HAMADA
  • Publication number: 20130342801
    Abstract: The liquid crystal display device (1) includes (i) a plurality of pixels arranged in a matrix manner for carrying out display, (ii) pixel electrodes (20) each of which has a comb-teeth shaped region, (iii) common electrodes (24) which face the respective pixel electrodes (20) via an insulating layer and each of which has a plate-like shape, (iv) a plurality of CSY lines (14), and (v) a plurality of CSX lines (16) which perpendicularly intersect with the plurality of CSY lines (14). Each of the common electrodes (24) is connected with any of the plurality of CSY lines (14) or with any of the plurality of CSX lines (16).
    Type: Application
    Filed: February 27, 2012
    Publication date: December 26, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hiroshi Hamada, Kengo Takahama, Shinichi Miyazaki
  • Patent number: 8602656
    Abstract: An alternator has front and rear bearings, supported by front and rear frames, to rotatably support a shaft of a rotor extending along axial direction. A washer is located between the rear frame and the rear bearing to apply pressing force to the rear bearing slightly movable along axial direction. The washer has a ring-shaped base portion concentrically located with the rear bearing, slanting portions extending from the base portion toward outside of radial direction such that two adjacent slanting portions arranged as each pair along circumferential direction are inclined to different sides of axial direction, and flattened portions extending from respective slanting portions toward outside and being parallel to the base portion. Flattened portions shifted to front side are in contact with the rear bearing, and flattened portions shifted to rear side are in contact with the rear frame.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 10, 2013
    Assignee: Denso Corporation
    Inventors: Mikio Mashino, Hiroshi Hamada
  • Publication number: 20130311085
    Abstract: A satellite and/or dead-reckoning navigation integrated positioning device with improved accuracy including position, velocity, etc. is disclosed. A tracking processing module performs, based on a GPS signal, acquisition and tracking thereof and demodulation of a navigation message. A GPS calculation module calculates position, velocity, and the like based on pseudo-range and Doppler frequency observations, and ephemeris data and gives the calculations to output judgment and tracking processing modules. Based on external support information including inertial sensor output, map information or information about differences between map position and measured position , along with the pseudo-range and Doppler observations, an integrated positioning calculation module estimates position, velocity, and the like, and gives the estimates to the output judgment module.
    Type: Application
    Filed: March 21, 2013
    Publication date: November 21, 2013
    Inventors: Hiroyuki TODA, Masaki SUYAMA, Hiroshi HAMADA, Mika TANAKA (NINOMIYA), Kunihiko HASHIMOTO
  • Patent number: 8575714
    Abstract: Provided is a backside illuminated semiconductor light-receiving device enhancing a frequency characteristic without deteriorating assembling operability. The light-receiving device includes a rectangular substrate; a light receiving mesa portion formed on a center portion of one side on a front surface of the substrate and includes a PN junction portion; a P-type electrode formed on the light receiving mesa portion and conductive with one side of the PN junction portion; an N-type electrode mesa portion formed on one corner portion of the one side; an N-type electrode pulled out to the N-type electrode mesa portion and conductive with the other side of the PN junction portion; a P-type electrode mesa portion and a dummy electrode mesa portion formed in a region including three other corner portions; and a dummy electrode formed on the dummy electrode mesa portion.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: November 5, 2013
    Assignee: Oclaro Japan, Inc.
    Inventors: Takashi Toyonaka, Hiroshi Hamada, Masataka Yokosawa
  • Publication number: 20130220585
    Abstract: A cylindrical member of a tube for a heat exchanger is made of a pair of flat plate portions, and a pair of curved portions for connecting the pair of flat plate portions to each other. One of the pair of curved portions constructs a bonded portion in which an outer wall portion and an inner wall portion are bonded to each by brazing in a state where the outer wall portion and the inner wall portion overlap each other. The inner wall portion has a portion opposite to the outer wall portion put into close contact with the outer wall portion and is bonded to the one flat plate portion in a state where a tip end portion of the inner wall portion opposite to the one flat plate portion is separated from the one flat plate portion.
    Type: Application
    Filed: November 4, 2011
    Publication date: August 29, 2013
    Applicant: DENSO CORPORATION
    Inventors: Takahide Oohara, Hiroshi Hamada, Norio Yoshido, Tetsuya Sakakibara, Kazuhiro Mitsukawa, U Ou, Hiroyuki Genda, Mitsuyoshi Saitou, Tadashi Nakabou, Noriyuki Miyazaki, Norimasa Baba, Hiroyasu Shimanuki