Patents by Inventor Naoki Okazaki

Naoki Okazaki 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: 10374097
    Abstract: To provide a transistor having a high on-state current. A semiconductor device includes a first insulator containing excess oxygen, a first oxide semiconductor over the first insulator, a second oxide semiconductor over the first oxide semiconductor, a first conductor and a second conductor which are over the second oxide semiconductor and are separated from each other, a third oxide semiconductor in contact with side surfaces of the first oxide semiconductor, a top surface and side surfaces of the second oxide semiconductor, a top surface of the first conductor, and a top surface of the second conductor, a second insulator over the third oxide semiconductor, and a third conductor facing a top surface and side surfaces of the second oxide semiconductor with the second insulator and the third oxide semiconductor therebetween. The first oxide semiconductor has a higher oxygen-transmitting property than the third oxide semiconductor.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: August 6, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Akihisa Shimomura, Yuhei Sato, Yasumasa Yamane, Yoshitaka Yamamoto, Hideomi Suzawa, Tetsuhiro Tanaka, Yutaka Okazaki, Naoki Okuno, Takahisa Ishiyama
  • Publication number: 20190229192
    Abstract: A semiconductor device with a high on-state current is provided. The semiconductor device includes a first insulator over a substrate, an oxide over the first insulator, a second insulator over the oxide, a conductor overlapping with the oxide with the second insulator therebetween, a third insulator in contact with a top surface of the oxide, a fourth insulator in contact with a top surface of the third insulator, a side surface of the second insulator, and a side surface of the conductor, and a fifth insulator in contact with a side surface of the fourth insulator, a side surface of the third insulator, and the top surface of the oxide. The third insulator has a lower oxygen permeability than the fourth insulator.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 25, 2019
    Inventors: Hiroki KOMAGATA, Naoki OKUNO, Yutaka OKAZAKI, Hiroshi FUJIKI
  • Patent number: 8267511
    Abstract: An image forming apparatus includes an ink discharge unit including nozzles to discharge ink and to form an image on a recording medium; a conveyer belt to convey the recording medium so that the recording medium passes through an area facing the ink discharge unit, the conveyor belt including blank discharge holes to let the ink for a blank discharge through; a control unit to control an ink discharge operation of the ink discharge unit; a blank discharge receiver to receive the ink for the blank discharge, provided at a position facing the ink discharge unit across the conveyor belt; and a belt position detection unit to detect a position in a direction perpendicular to a belt moving direction of the conveyor belt, wherein the control unit controls the blank discharge operation of the ink discharge unit based on a detection result detected by the belt position detection unit.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: September 18, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Wataru Takahashi, Takashi Miyagi, Naoki Okazaki, Yoshinari Suzuki
  • Patent number: 8136902
    Abstract: An image forming apparatus includes a recording head including heads containing arranged nozzles to discharge a droplet, the heads are arranged in a zigzag form along a nozzle array direction; a conveyer belt with suction holes to convey a printing medium in a direction intersecting a head array direction; and a control unit to control an blank discharging; wherein suction hole arrays including the suction holes arranged in the head array direction, are arranged at a predetermined interval; wherein one of the suction hole arrays is a reference suction hole array including the suction hole to pass a position facing the nozzle of a nozzle array end and the nozzle in an overlapping part of two heads in the nozzle array direction; and wherein the control unit makes each nozzle discharge a blank discharging droplet to the suction holes, using the reference suction hole array as a standard.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: March 20, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Miyagi, Naoki Okazaki, Wataru Takahashi, Yoshinari Suzuki
  • Publication number: 20100149242
    Abstract: An image forming apparatus includes an ink discharge unit including nozzles to discharge ink and to form an image on a recording medium; a conveyer belt to convey the recording medium so that the recording medium passes through an area facing the ink discharge unit, the conveyor belt including blank discharge holes to let the ink for a blank discharge through; a control unit to control an ink discharge operation of the ink discharge unit; a blank discharge receiver to receive the ink for the blank discharge, provided at a position facing the ink discharge unit across the conveyor belt; and a belt position detection unit to detect a position in a direction perpendicular to a belt moving direction of the conveyor belt, wherein the control unit controls the blank discharge operation of the ink discharge unit based on a detection result detected by the belt position detection unit.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 17, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Wataru TAKAHASHI, Takashi Miyagi, Naoki Okazaki, Yoshinari Suzuki
  • Publication number: 20100091056
    Abstract: An image forming apparatus includes a recording head including heads containing arranged nozzles to discharge a droplet, the heads are arranged in a zigzag form along a nozzle array direction; a conveyer belt with suction holes to convey a printing medium in a direction intersecting a head array direction; and a control unit to control an blank discharging; wherein suction hole arrays including the suction holes arranged in the head array direction, are arranged at a predetermined interval; wherein one of the suction hole arrays is a reference suction hole array including the suction hole to pass a position facing the nozzle of a nozzle array end and the nozzle in an overlapping part of two heads in the nozzle array direction; and wherein the control unit makes each nozzle discharge a blank discharging droplet to the suction holes, using the reference suction hole array as a standard.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 15, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takashi Miyagi, Naoki Okazaki, Wataru Takahashi, Yoshinari Suzuki
  • Publication number: 20090066511
    Abstract: An information management system, livestock management system and cages with which chickens can be managed as individual units. A tag reader 8 communicates with a transponder 5 attached to chicken 2 in cage 1 through a passive antenna disposed on one surface of cage 1 so that the distance from transponder 5 is within a first predetermined distance and an active antenna 7 disposed on automatic feeder 4 so that the distance from passive antenna 6 when closest is within a second predetermined distance whereby power can be supplied using electromagnetic coupling, and reads management information for chicken 2 from transponder 5 or writes it to transponder 5. This information management system can be used for other livestock and for other moving objects.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 12, 2009
    Applicant: Texas Instruments Incorporated
    Inventor: Naoki Okazaki
  • Publication number: 20040192406
    Abstract: The present invention relates to an antenna circuit that can achieve optimal matching according to an external environment of an antenna without interrupting communication in wireless transmission and reception. The antenna circuit of a cellular phone is provided with a plurality of matching circuits between a transmitting unit or a receiving unit and the antenna. A control unit detects operating conditions of the cellular phone such as a waiting mode, a normal voice call mode or a hands-free call mode as the external environment of the antenna. Each matching circuit has an impedance to optimize the antenna matching according to the respective conditions.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 30, 2004
    Inventors: Naoki Okazaki, Masaru Kanazawa
  • Patent number: 6393978
    Abstract: A multicolor stencil printer including print drums each storing an ink of a particular color, pressing members each positioned and configured to move into contact with a particular one of the print drums to nip a recording medium for printing and move out of the contact to transport the recording medium toward downstream, and holding devices each assigned to a particular one of the pressing members for holding the particular one of the pressing members out of the contact with the particular one of the print drums, wherein in a color selective mode, the print drums and the pressing members selectively cooperate to nip the recording medium such that the holding devices assigned to unused pressing members hold the unused pressing members away from the print drums associated cooperatively with the unused pressing members.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: May 28, 2002
    Assignee: Tohoku Ricoh Co., Ltd.
    Inventors: Mitsuhiro Sugawara, Daisuke Hasebe, Naoki Okazaki
  • Patent number: 6129013
    Abstract: A stencil printer of the present invention includes at least one ink drum for wrapping a master around its outer periphery. An ink feed device feeds ink to the master wrapped around the ink drum. A pressing member is movable into and out of contact with the ink drum at a position where it faces the ink feed device. An image is printed on a paper fed from a paper feed section at a print section where the ink drum and pressing member face each other. A belt conveyor includes a belt extending between the paper feed section located upstream of the print section in the direction of paper conveyance and a paper discharge section located downstream of the print section in the same direction through the print section. The belt conveys the paper fed from the paper feed section while causing it to electrostatically adhere thereto. The paper is sufficiently electrostatically adhered to the belt before it reaches the print section, so that air suction, an air knife, a separator or the like is not necessary.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: October 10, 2000
    Assignee: Tohoku Ricoh Co., Ltd.
    Inventors: Hironobu Takasawa, Mituru Takahashi, Naoki Okazaki
  • Patent number: 6028011
    Abstract: Electroless nickel plating and gold plating is performed on an aluminum electrode in order to construct a highly reliable electrode. The steps are: depositing zinc on the aluminum electrode with zincate treatment liquid containing sodium hydroxide and zinc oxide; immersing it in solution which is prepared by dissolving sodium hypophosphite as a reducing agent into de-ionized water, followed by addition of de-ionized water while adjusting for the pH of 9.0 to 12.0 with sodium hydroxide solution, so as to make a total volume of 1000 ml; nickel-plating the aluminum electrode of the semiconductor device by using electroless nickel plating solution of oxidation-reduction reacting type containing sulfur compound as a reaction promoter, under a condition of the pH at 4.0 to 6.8 and a temperature of 80 to 90.degree. C.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: February 22, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshihisa Takase, Naoki Okazaki