Patents by Inventor Tetsuya Tada

Tetsuya Tada 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: 8093580
    Abstract: A semiconductor device has a structure in which a light-emitting layer of an organic material or the like is sandwiched between a work function controlled single-wall carbon nanotube cathode encapsulating a donor having a low ionization potential and a work function controlled single-wall carbon nanotube anode encapsulating an acceptor having a high electron affinity. A semiconductor device represented by an organic field-effect light-emitting element and a method of manufacturing the same are provided. The semiconductor device and the method of manufacturing the same make it possible to improve characteristics and performance, such as reduction in light-emission starting voltage and a high luminous efficiency, to improve reliability, such as an increase in life, and to improve productivity, such as reduction in manufacturing cost.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: January 10, 2012
    Assignee: NEC Corporation
    Inventors: Hidefumi Hiura, Satoru Toguchi, Tetsuya Tada, Toshihiko Kanayama
  • Patent number: 8066155
    Abstract: A trigger-type pump dispenser capable of preventing deformation of a channel of a coupling part when a piston is vertically pushed down by a trigger even in a structure in which the coupling part bends and a nozzle does not vertically move. The dispenser has a base main body 1 having the cylinder part 11 inside and attachable to an opening part of a container main body. A cover body 4 detachably latched with the base main body. A piston structure 2 composed of the nozzle part 21 engaged with the base main body, the piston part 23, and a bendable coupling part coupling the nozzle part and the piston part. Many fins 22A are formed on the periphery of the coupling part 22 so that an interior channel is not deformed.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: November 29, 2011
    Assignee: Canyon Co., Ltd.
    Inventor: Tetsuya Tada
  • Publication number: 20100243680
    Abstract: The present invention provides a pump dispenser capable of preventing deformation of a channel of a coupling part when a piston is pushed down by a trigger even in a structure in which the coupling part bends and a nozzle does not vertically move. A trigger-type pump dispenser for jetting liquid, which is in a cylinder part, from a nozzle part to outside by vertically sliding a piston part in a cylinder by turning a trigger, wherein the trigger-type pump dispenser has: a base main body 1 having the cylinder part 11 inside and attachable to an opening part of a container main body; a cover body 4 detachably latched with the base main body; a piston structure 2 composed of the nozzle part 21 engaged with the base main body, the piston part 23, and a bendable coupling part coupling the nozzle part and the piston part; and the trigger 3 turnably attached to the base main body for vertically sliding the piston part 23 in the cylinder.
    Type: Application
    Filed: December 13, 2007
    Publication date: September 30, 2010
    Inventor: Tetsuya Tada
  • Publication number: 20100127020
    Abstract: A push-type dispenser which has a cylinder as thin as possible and is free from deformation is provided. A pump dispenser (A) has a cylinder (1), a piston (4) slidably attached to the cylinder (1) from inside, and a nozzle head (2) having a nozzle opening (N) coupled to the piston (4). The pump dispenser discharges liquid from the nozzle opening (N) by applying a pressure to the liquid filling the interior of the cylinder (1) by pushing the nozzle head (2), wherein the wall of the cylinder has a thickness of 0.6 mm to 1.3 mm.
    Type: Application
    Filed: June 24, 2008
    Publication date: May 27, 2010
    Inventor: Tetsuya Tada
  • Publication number: 20100102292
    Abstract: A semiconductor graphene is used for a channel layer, and a metal graphene is used for electrode layers for a source, a drain, and a gate which serve as interconnections as well. An oxide is used for a gate insulating layer. The channel layer and the electrode layers are located on the same plane.
    Type: Application
    Filed: February 27, 2008
    Publication date: April 29, 2010
    Applicant: NEC Corporation
    Inventors: Hidefumi Hiura, Fumiyuki Nihei, Tetsuya Tada, Toshihiko Kanayama
  • Patent number: 7687801
    Abstract: It is to provide a thermodynamically and chemically stable dopant material which can achieve controls of the pn conduction types, carrier density, and threshold value of gate voltage, and a manufacturing method thereof. Further, it is to provide an actually operable semiconductor device such as a transistor with an excellent high-speed operability and high-integration characteristic. Provided is a dopant material obtained by depositing, on a carbon nanotube, a donor with a smaller ionization potential than an intrinsic work function of the carbon nanotube or an acceptor with a larger electron affinity than the intrinsic work function of the carbon nanotube. The ionization potential of the donor in vacuum is desired to be 6.4 eV or less, and the electron affinity of the acceptor in vacuum to be 2.3 eV or more.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: March 30, 2010
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Hidefumi Hiura, Tetsuya Tada, Toshihiko Kanayama
  • Patent number: 7678601
    Abstract: A method of forming a MEMS structure over active circuitry in a semiconductor body includes forming active circuitry in a semiconductor body, and forming the MEMS structure over the active circuitry, wherein at least a portion of the MEMS structure spatially overlaps the active circuitry.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: March 16, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Hiroyuki Tomomatsu, Kazuhiko Watanabe, Tetsuya Tada, Toshiyuki Tani
  • Publication number: 20100051902
    Abstract: A semiconductor device has a structure in which a light-emitting layer of an organic material or the like is sandwiched between a work function controlled single-wall carbon nanotube cathode encapsulating a donor having a low ionization potential and a work function controlled single-wall carbon nanotube anode encapsulating an acceptor having a high electron affinity. A semiconductor device represented by an organic field-effect light-emitting element and a method of manufacturing the same are provided. The semiconductor device and the method of manufacturing the same make it possible to improve characteristics and performance, such as reduction in light-emission starting voltage and a high luminous efficiency, to improve reliability, such as an increase in life, and to improve productivity, such as reduction in manufacturing cost.
    Type: Application
    Filed: October 24, 2007
    Publication date: March 4, 2010
    Inventors: Hidefumi Hiura, Satoru Toguchi, Tetsuya Tada, Toshihiko Kanayama
  • Publication number: 20100012923
    Abstract: It is to provide a thermodynamically and chemically stable dopant material which can achieve controls of the pn conduction types, carrier density, and threshold value of gate voltage, and a manufacturing method thereof. Further, it is to provide an actually operable semiconductor device such as a transistor with an excellent high-speed operability and high-integration characteristic. Provided is a dopant material obtained by depositing, on a carbon nanotube, a donor with a smaller ionization potential than an intrinsic work function of the carbon nanotube or an acceptor with a larger electron affinity than the intrinsic work function of the carbon nanotube. The ionization potential of the donor in vacuum is desired to be 6.4 eV or less, and the electron affinity of the acceptor in vacuum to be 2.3 eV or more.
    Type: Application
    Filed: January 5, 2006
    Publication date: January 21, 2010
    Inventors: Hidefumi Hiura, Tetsuya Tada, Toshihiko Kanayama
  • Patent number: 7408635
    Abstract: An optical measurement of a crystalline sample to be measured. The sample is irradiated with an exciting light from the polarization direction in which the Raman scattering is prohibited by the selection rule. When a metal probe is brought to proximity to the sample to be measured, the selection rule is eased locally only in the proximity portion near the probe end in order that Raman scattering becomes active. Thus, a Raman signal only from the proximity portion near the probe end is detected. An optical measurement apparatus having an optical arrangement for measuring a signal light re-emitted from a sample to be measured when the sample is irradiated with an exciting light is provided. The optical measurement apparatus comprises a means for limiting the polarization state of the exciting light or signal light and a means for bringing a metal probe near the sample to be measured.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: August 5, 2008
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Vladimir Pobortchi, Toshihiko Kanayama, Tetsuya Tada
  • Publication number: 20080017670
    Abstract: It is an object of the present invention to provide a pump dispenser having a ventilation hole at a position higher than a packing seal plane in order to prevent leakage and, at the same time, to cause the pump dispenser to be also advantageous in terms of cost by simplifying the mold structure as much as possible. The pump dispenser having a cap 1 attached to an opening portion of a container main body 13 containing a liquid has: a housing 2 having a body portion 2a engaged with the cap, a cylinder 3 fit in the housing and disposed above a seal portion, and a piston member 6 slidable in the cylinder; wherein a ventilation hole 3b1 is formed in the cylinder, and a ventilation channel communicated with outside air P for releasing a negative pressure in the container main body is formed between the outer wall of the cylinder and the inner wall of the housing. The cylinder 3 is fit in the housing so that the cylinder is supported by a rib 2d formed on the inner wall of the housing 2.
    Type: Application
    Filed: November 29, 2005
    Publication date: January 24, 2008
    Inventor: Tetsuya Tada
  • Publication number: 20070246569
    Abstract: To provide a trigger spray that can spray liquid on a target place reliably. A trigger spray 1 that moves a piston 9 utilizing a pressing force of a trigger portion to spray liquid in a cylinder from a nozzle portion 8, wherein a cylindrical barrel portion 3g is disposed along a container axial direction, a hinge portion 3c is formed at the barrel portion on the side of the nozzle portion thereof, the trigger portion is pivotally provided through the hinge portion, and the trigger portion is hung about the hinge portion toward the side opposite to the side of the nozzle portion at a reference position thereof. The trigger spray where an O-ring 6 is fitted between a mouth portion 2a of a container 2 and an outer cylinder portion formed so as to hang from a supporting wall portion 3e of the barrel portion 3g downwardly.
    Type: Application
    Filed: April 6, 2005
    Publication date: October 25, 2007
    Inventor: Tetsuya Tada
  • Publication number: 20070172975
    Abstract: A method of forming a MEMS structure over active circuitry in a semiconductor body includes forming active circuitry in a semiconductor body, and forming the MEMS structure over the active circuitry, wherein at least a portion of the MEMS structure spatially overlaps the active circuitry.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 26, 2007
    Inventors: Hiroyuki Tomomatsu, Kazuhiko Watanabe, Tetsuya Tada, Toshiyuki Tani
  • Patent number: 7247548
    Abstract: The present invention achieves a shallow junction of a source and a drain, and provides a doping method which makes device properties reproducible and a semiconductor device fabricated using the method. In the present invention, doping for the semiconductor is conducted by attaching a molecular species with a higher electron affinity or lower ionization energy out of fullerene derivatives or metallocenes to the semiconductor surface to induce charge transfer from the molecule to the semiconductor.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: July 24, 2007
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Tetsuya Tada, Toshihiko Kanayama, Hidefumi Hiura
  • Publication number: 20070161213
    Abstract: A self-aligned/self-limited processing is carried out on a nanowire material typified by a carbon nanotube or on the vicinity of the nanowire material alone in the following manner. External energy is applied to the nanowire material. Joule heat, light, or a thermoelectron is thereby locally formed and acts as minute energy. The minute energy causes a chemical reaction of an externally added raw material and causes the conversion of a property of the nanowire material.
    Type: Application
    Filed: October 30, 2006
    Publication date: July 12, 2007
    Inventors: Hidefumi Hiura, Tetsuya Tada, Toshihiko Kanayama
  • Publication number: 20070158368
    Abstract: To provide a pump dispenser with a trigger, having a simple construction, the number of parts reduced, and remarkably excellent operability. In a pump dispenser (1) which jets liquid in a cylinder (4g) from a nozzle portion (5) when a piston (7) integral with the nozzle portion (5) is pushed down according to grasping of a trigger (4c), the cylinder (4g) is integrally formed inside a barrel portion (4a) disposed along an axial direction of a container and the trigger (4c) is integrally formed on the barrel portion (4a) via a hinge portion (4b). Since the trigger is integrally formed on the cylindrical barrel portion disposed along the axial direction of the container via the hinge portion, a fulcrum for causing the trigger to pivot can be disposed as rearward as possible, so that a large leverage can be taken. Since at least the barrel portion and the trigger are integrally formed from synthetic resin, movement of the pivot fulcrum becomes remarkably accurate.
    Type: Application
    Filed: February 7, 2005
    Publication date: July 12, 2007
    Inventor: Tetsuya Tada
  • Publication number: 20070013907
    Abstract: An optical measurement of a crystalline sample to be measured. The sample is irradiated with an exciting light from the polarization direction in which the Raman scattering is prohibited by the selection rule. When a metal probe is brought to proximity to the sample to be measured, the selection rule is eased locally only in the proximity portion near the probe end in order that Raman scattering becomes active. Thus, a Raman signal only from the proximity portion near the probe end is detected. An optical measurement apparatus having an optical arrangement for measuring a signal light re-emitted from a sample to be measured when the sample is irradiated with an exciting light is provided. The optical measurement apparatus comprises a means for limiting the polarization state of the exciting light or signal light and a means for bringing a metal probe near the sample to be measured.
    Type: Application
    Filed: September 3, 2004
    Publication date: January 18, 2007
    Inventors: Vladimir Pobortchi, Toshihiko Kanayama, Tetsuya Tada
  • Patent number: 7052653
    Abstract: Disclosed is a microsize driving device in which falling of track proteins from an arrangement of motor protein molecules arranged on a linear track groove provided on a substrate is suppressed and utilization of kinetic energy of track proteins as a driving energy is made possible by controlling the moving direction to a single direction. Namely, provided is a microsize driving device which comprises a substrate, an arrangement of motor protein molecules such as, for example, kinesin molecules deposited on the bottom of a linear track groove provided thereon and track proteins such as, for example, microtubules disposed thereon and is characterized in that the said linear track groove has side surfaces shaped in such a structure as to permit a linear movement of the track proteins moving in a certain specific direction but to inhibit the track proteins moving in the reverse direction thereto causing reversion for the movement in the above mentioned specific direction.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: May 30, 2006
    Assignee: Japan as represented by the Secretary of Agency of Industrial Science and Technology
    Inventors: Yuichi Hiratsuka, Taro Uyeda, Tetsuya Tada, Toshihiko Kanayama
  • Publication number: 20050130395
    Abstract: The present invention achieves a shallow junction of a source and a drain, and provides a doping method which makes device properties reproducible and a semiconductor device fabricated using the method. In the present invention, doping for the semiconductor is conducted by attaching a molecular species with a higher electron affinity or lower ionization energy out of fullerene derivatives or metallocenes to the semiconductor surface to induce charge transfer from the molecule to the semiconductor.
    Type: Application
    Filed: December 6, 2004
    Publication date: June 16, 2005
    Inventors: Tetsuya Tada, Toshihiko Kanayama, Hidefumi Hiura
  • Publication number: 20050040884
    Abstract: A drive circuit including circuitry that can be easily adjusted, the output drive current can be kept balanced, and high-precision drive current can be supplied to the load circuit. Clamp circuit 10 is furnished to hold the drain voltage of current output transistor QN12, which supplies drive current to a load resistor. When transistor QN12 is in a conducting state, drain voltage VA of transistor QN12 is held at approximately the same level as source voltage VD of transistor QN14 by clamp circuit 10. So rise and fall in the drain output current of transistor QN12 can be kept balanced, and rise and fall delay time can be made approximately equal for input signal Sin.
    Type: Application
    Filed: October 17, 2003
    Publication date: February 24, 2005
    Inventor: Tetsuya Tada