Patents by Inventor Yuji Koyama

Yuji Koyama 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: 8569853
    Abstract: A semiconductor light-receiving device includes a semiconductor light-receiving element that has a first electrode and a second electrode, a first wiring coupled to the first electrode, and a second wiring coupled to the second electrode, a width of the second wiring being smaller than a width of the first wiring.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: October 29, 2013
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventor: Yuji Koyama
  • Publication number: 20130252370
    Abstract: A method of manufacturing a semiconductor light-receiving element includes: forming a semiconductor layer structure having a one-conductivity-type semiconductor layer having a first conduction type located on a side of light incidence, an opposite-conductivity-type semiconductor layer having a second conduction type opposite to the first conduction type, and a light-absorbing layer between the one-conductivity-type semiconductor layer and the opposite-conductivity type semiconductor layer, the opposite-conductivity-type semiconductor layer having a structure in which a first semiconductor layer comprised of a binary mixed crystal, a second semiconductor layer comprised of a three-or-more-element mixed crystal, and a third semiconductor layer comprised of a three-or-more-element mixed crystal having an energy gap smaller than that of the second semiconductor layer are laminated in this order from the light incidence side; forming a metal film that is in contact with the third semiconductor layer; and performin
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Yuji Koyama
  • Patent number: 8541859
    Abstract: A semiconductor light receiving element includes a first semiconductor layer having a first conduction type, a second semiconductor layer that is provided on the first semiconductor layer and has a light receiving area, the second semiconductor layer having a second conduction type opposite to the first conduction type, an insulation film provided on the second semiconductor layer, and an electrode provided on the insulation film, the insulation film having a plurality of windows in an area in which the electrode overlaps the plurality of windows, the electrode being electrically connected to the second semiconductor layer via the plurality of windows.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: September 24, 2013
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventor: Yuji Koyama
  • Patent number: 8449722
    Abstract: A used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: May 28, 2013
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20130026595
    Abstract: A semiconductor light-receiving device includes a semiconductor light-receiving element that has a first electrode and a second electrode, a first wiring coupled to the first electrode, and a second wiring coupled to the second electrode, a width of the second wiring being smaller than a width of the first wiring.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Yuji Koyama
  • Patent number: 8350351
    Abstract: A semiconductor light receiving device includes: a first semiconductor light receiving element that is provided on a semiconductor substrate and has a mesa structure having an upper electrode to be coupled to an electrode wiring of a mounting carrier and a lower electrode; a first mesa that is provided on the semiconductor substrate and has an upper electrode coupled electrically to a lower electrode of the first semiconductor light receiving element with a wiring provided on the semiconductor substrate; and a second mesa that is provided on the semiconductor substrate and has an upper electrode that has a same electrical potential as the upper electrode of the first semiconductor light receiving element when coupled to the electrode wiring on the mounting carrier.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 8, 2013
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventor: Yuji Koyama
  • Patent number: 8343314
    Abstract: A pulp feeder for used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality is presented. The pulp feeder includes a partition member disposed slidably on the downside of a running endless mesh belt, and a paper making frame body disposed slidably on the upside of the mesh belt, and an overflow gate is provided in the paper making frame body for keeping constant the water level of the collected pulp suspension, and the pulp suspension supplied in the paper making frame body is collected up to a specific water level defined by the overflow gate, and is uniformly diffused and supplied on the upside of the running mesh belt. Accordingly, if the supply water volume of pulp suspension fluctuates, the water level of pulp suspension staying in the paper making frame body is always kept constant, and the weight of the wet paper manufactured on the mesh belt is stabilized.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 1, 2013
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Patent number: 8313616
    Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: November 20, 2012
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120279672
    Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120279671
    Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120273909
    Abstract: A semiconductor light-receiving includes: a substrate; a semiconductor light-receiving element that is provided on the substrate and has a first conductivity region and a second conductivity region; a first electrode electrically coupled to the first conductivity region; a second electrode electrically coupled to the second conductivity region; an insulating layer located on the second conductivity region; and a wiring that is located on the insulating layer and is electrically coupled to the first electrode, the wiring being elongated from the first electrode to a peripheral region of the semiconductor light-receiving element, the wiring having a region of first width and a region of second width narrower than the first width, the region of second width of the wiring being located on the second conductivity region.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Yuji Koyama
  • Patent number: 8273217
    Abstract: To present a paper manufacturing apparatus for used paper recycling apparatus small enough to be installed in a room of small shop or the like, friendly to the environment, low in running cost, and high in confidentiality. The paper manufacturing apparatus includes a paper making process unit for manufacturing wet paper from pulp suspension sent from a pulp making section in preceding process, the paper making process unit includes a paper making conveyor for manufacturing and conveying the pulp suspension, the paper making conveyor is composed of a mesh belt of paper making mesh structure of numerous mesh cells for filtering and dewatering the pulp suspension disposed so as to run straightly toward its running direction, and the paper making process length in the mesh belt is set in a range of straight running direction length of the mesh belt in the apparatus case of furniture size. As a result, a used paper recycling apparatus of small size and simple structure is realized.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 25, 2012
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Patent number: 8262863
    Abstract: The invention presents a paper machine for a used paper recycling apparatus being installed in a room of a small shop or the like, friendly to the environment, low in running cost, and capable of maintaining a high confidentiality. The paper machine includes a paper making process unit for manufacturing wet paper from slurry pulp suspension sent from the pulp making section of a preceding process, and a drying process unit for drying the wet paper manufactured in the paper making process unit and making recycled paper, in which a processing conveyor is disposed between the paper making process unit and the drying process unit extending in the overall length of the paper making process and the drying process, and this processing conveyor is manufactured in a form of net belt conveyor having a running mesh belt of mesh structure composed of innumerable mesh cells for filtering and dewatering the pulp suspension.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: September 11, 2012
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120138250
    Abstract: A pulp making technology for realizing a used paper recycling apparatus of furniture size that can be installed in a small shop, room or the like. Having a beating machine provided with a pair of beating disks disposed oppositely to each other in a relatively rotatable manner at a close distance, this beating machine has a tiny beating gap, between the pair of beating disks, for executing the beating process of at least two continuous stages from a rough beating process to a finish beating process, and the beating gap starts at a supply port formed in a central part of the fixed side beating disk, and ends at a discharge port formed on the outer peripheral edge of the beating disks. Therefore, even in a very small beating process space contained in an apparatus space of furniture size, smooth and highly efficient beating of high processing capacity is realized without causing clogging of used paper.
    Type: Application
    Filed: August 23, 2011
    Publication date: June 7, 2012
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120133013
    Abstract: A semiconductor light receiving element includes a first semiconductor layer having a first conduction type, a second semiconductor layer that is provided on the first semiconductor layer and has a light receiving area, the second semiconductor layer having a second conduction type opposite to the first conduction type, an insulation film provided on the second semiconductor layer, and an electrode provided on the insulation film, the insulation film having a plurality of windows in an area in which the electrode overlaps the plurality of windows, the electrode being electrically connected to the second semiconductor layer via the plurality of windows.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 31, 2012
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Yuji Koyama
  • Publication number: 20120028041
    Abstract: Provided is a radiation-curable adhesive composition for an optical component, the radiation-curable adhesive composition exhibiting a high tensile strength and flexibility suitable for enabling stable adhesion between the optical component and an adherend when light-cured and exhibiting excellent durability. A radiation-curable adhesive composition for an optical component includes 100 parts by weight of a specific (meth)acrylic copolymer (A), 2 to 20 parts by weight of a specific radiation-curable acrylic compound (B), 3 to 50 parts by weight of a specific radiation-curable acrylic compound (C), 0.1 to 10 parts by weight of a hydrogen abstraction-type photopolymerization initiator (D), 0.01 to 10 parts by weight of an isocyanate crosslinking agent (E), and 0.01 to 3 parts by weight of a silane compound (F), wherein the total amount of the amount of (B) mixed and the amount of (C) mixed is 5 to 60 parts by weight.
    Type: Application
    Filed: February 10, 2010
    Publication date: February 2, 2012
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Yuji Koyama, Mingxing An
  • Publication number: 20120024490
    Abstract: A pulp feeder capable of obtaining recycled paper of uniform texture, stable in the weight of the wet paper made on a mesh belt, in a very narrow used paper processing space of furniture size. A pulp feeding unit (pulp feeder) includes a retention unit disposed slidably on the upper side of an running mesh belt, for retaining a pulp suspension sent from a pulp manufacturing unit, and a paper making frame body for defining the supply width of the pulp suspension on the upper side of the mesh belt, in which the leading end position of this paper making frame body is provided with an overflow unit for keeping constant the water level of the pulp suspension retained in the retention unit. The pulp suspension supplied in the retention unit is retained to the water level defined the overflow unit, and is uniformly dispersed and supplied on the upper side of the mesh belt by cooperative action of this retention action and the running action of the mesh belt.
    Type: Application
    Filed: June 15, 2011
    Publication date: February 2, 2012
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20120012269
    Abstract: A recycled paper smoothing technology capable of regenerating the wet paper made and formed in the paper making process unit of the paper making unit securely as a smooth recycled paper free from wrinkle, in a very narrow used paper processing space of a used paper recycling apparatus of furniture size. A recycled paper smoothing unit has a smooth surface belt for conveying the wet paper, and a belt guide unit for conveying and guiding the smooth surface belt in a state curved upward toward the running direction thereof, and the wet paper on the smooth surface belt conveyed by the smooth surface belt is provided with a tension uniformly in the conveying and running direction, by the running action of the smooth surface belt, and the curved shape of the smooth surface belt due to the belt guide unit, so that a smooth recycled paper free from wrinkle is regenerated securely.
    Type: Application
    Filed: May 25, 2011
    Publication date: January 19, 2012
    Inventors: Shigeru Tamai, Yuji Koyama
  • Publication number: 20110300377
    Abstract: A radiation-curable adhesive composition for an optical component includes 100 parts by weight of a specific (meth)acrylic copolymer (A), 0.01 to 10 parts by weight of a specific radiation-curable acrylic compound (B), 1 to 30 parts by weight of a specific radiation-curable acrylic compound (C), 0.1 to 10 parts by weight of a hydrogen abstraction-type photopolymerization initiator (D), 0.01 to 10 parts by weight of an isocyanate crosslinking agent (E), and 0.01 to 3 parts by weight of a silane compound (F), wherein the total amount of the amount of (B) mixed and the amount of (C) mixed is 3 to 40 parts by weight, and the amount of (C) mixed is larger than the amount of (B) mixed.
    Type: Application
    Filed: February 10, 2010
    Publication date: December 8, 2011
    Applicant: SOKEN CHEMICAL & ENGINEERING CO., LTD.
    Inventors: Yuji Koyama, Mingxing An
  • Patent number: 8025770
    Abstract: A used paper processing apparatus to be place in small shop or general household, capable of holding high secrecy, friendly to the environment, and low in running cost. In a furniture size apparatus case, a pulp manufacturing section for manufacturing used paper pulp by macerating and beating the used paper, a paper making section for manufacturing recycled paper by making the used paper pulp manufactured in the pulp manufacturing section, and a control section for driving and controlling by interlocking the pulp manufacturing section and paper making section are provided, being place in a room producing used paper, and by macerating and processing the used paper by the pulp manufacturing section, leak or disclosure of confidential information or private information written or printed on used paper can be prevented effectively, and further used paper pulp is processed by the paper making section, and recycled paper is manufactured.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: September 27, 2011
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama