Patents by Inventor Ken Nakata

Ken Nakata 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: 20240138870
    Abstract: Grasping forceps include a cylindrical sheath, a shaft furnished inside the sheath, an operation unit provided near a base end of the sheath and sliding the shaft by converting rotating operation force into an axial direction of the shaft through a pin, and a grasping unit provided near a front end of the sheath and enabling upper and lower jaw units to be open and closed. The grasping unit includes a link unit that couples the upper and lower jaw units, and the front end of the shaft through a pin and opens and closes the upper and lower jaw units according to a slide of the shaft, and the link unit, when the upper and lower jaw units are in a closed state, sets facing grasping surfaces to be parallel and have a predetermined gap dimension.
    Type: Application
    Filed: December 24, 2021
    Publication date: May 2, 2024
    Applicant: OSAKA UNIVERSITY
    Inventors: Ken NAKATA, Takashi KANAMOTO
  • Patent number: 11935744
    Abstract: A method for manufacturing a nitride semiconductor device includes the steps of growing a GaN channel layer on an SiC substrate using a vertical MOCVD furnace set at a first temperature using H2 as a carrier gas, and TMG and NH3 as raw materials, holding the SiC substrate having the grown GaN channel layer in the MOCVD furnace set at a second temperature higher than the first temperature using H2 as a carrier gas, the MOCVD furnace being supplied with NH3, and growing an InAlN layer on the GaN channel layer using the MOCVD furnace set at a third temperature lower than the first temperature using N2 as a carrier gas, and TMI, TMA, and NH3 as raw materials.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: March 19, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Isao Makabe, Ken Nakata
  • Publication number: 20240082637
    Abstract: An exercise support apparatus includes an information processing unit that supports a setting of a next exercise menu for improvement to a targeted body, based on prior body motion information on a subject detected by a motion sensor.
    Type: Application
    Filed: December 13, 2021
    Publication date: March 14, 2024
    Applicant: OSAKA UNIVERSITY
    Inventors: Ken NAKATA, Takashi KANAMOTO
  • Publication number: 20240055139
    Abstract: An apparatus (1) includes an exercise sensor (31) that continuously detects a movement of an exerciser accompanied by intermittent exercise, and a heart rate meter (32) that continuously measures a heart rate of the exerciser, and further includes an activity detection unit (12), a heart rate monitoring unit (13), an activity monitoring unit (14), and a notification processing unit (15). The activity detection unit (12) detects, from the movement of the exerciser, an activity intensity, a high activity intensity period, and a low activity intensity period. The heart rate monitoring unit (13) detects a declining trend in the heart rate of the exerciser, in the low activity intensity period each time, and monitors whether or not the declining trend of this time is low as compared with a predetermined reference.
    Type: Application
    Filed: October 12, 2021
    Publication date: February 15, 2024
    Inventors: Ken NAKATA, Yasushi SAKATA, Keita YAMASAKI, Teruki YOKOYAMA, Shoji KONDA
  • Publication number: 20230414830
    Abstract: To provide a collagen sponge excellent in mechanical strength and a production method for the collagen sponge. A collagen sponge including a porous construct having a pore structure, the collagen sponge having a tensile strength of 1 N or more and 5 N or less in every direction including a length direction and a width direction. The collagen sponge may be produced by a production method including the following steps: (1) a step of subjecting a collagen solution obtained by mixing collagen and a solvent to stirring and deaeration treatment; (2) a step of subjecting the collagen solution to freeze-dry treatment; and (3) a step of subjecting a dried collagen product after the freeze-dry treatment to insoluble treatment.
    Type: Application
    Filed: December 19, 2022
    Publication date: December 28, 2023
    Applicants: KOKEN CO., LTD., OSAKA UNIVERSITY
    Inventors: Ken NAKATA, Gaku KANNO
  • Publication number: 20230380755
    Abstract: A joint evaluation apparatus includes an inertial sensor unit that is attached in a vicinity of a joint with joint axes of the joint to connect bones on both sides parallel to a detection axis and detects motion of a bone of a joint axis of which a range of motion of joint movement is limited, among the joint axes, as a waveform signal, a load detection unit that detects a load applied to the joint, a data obtaining unit that, when detecting generation of the load, obtains the waveform signal to be detected by the inertial sensor unit, in a time direction and an intensity direction, and a feature amount calculation unit that analyzes the waveform signal and calculates a feature amount that evaluates movement quality of the joint.
    Type: Application
    Filed: October 19, 2021
    Publication date: November 30, 2023
    Applicant: OSAKA UNIVERSITY
    Inventors: Issei OGASAWARA, Ken NAKATA
  • Publication number: 20230112078
    Abstract: Disclosed are a ground reaction force index estimation system, a ground reaction force index estimation method, and a ground reaction force index estimation program that can compute ground reaction force indices at low computation costs. The ground reaction force index estimation system comprises footwear and an external device connected to the footwear. The footwear comprises a wearable sensor that measures triaxial acceleration and/or triaxial angular velocity and a computation unit that computes ground reaction force indices by multiple regression analysis from values computed from the measurement results to be used as explanatory variables. The external device comprises a controller that evaluates walking and running motions for the user on the basis of the measurement results by the wearable sensor received from the footwear, the computed ground reaction force indices, and the determination reference information and a presentation unit that presents the results of the evaluation of the running motion.
    Type: Application
    Filed: November 7, 2022
    Publication date: April 13, 2023
    Applicants: Osaka University, ORPHE Inc.
    Inventors: Ken NAKATA, Issei OGASAWARA, Yuya KIKUKAWA, Asumi KOBAYASHI, Yuki UNO
  • Patent number: 11559603
    Abstract: To provide a collagen sponge excellent in mechanical strength and a production method for the collagen sponge. A collagen sponge including a porous construct having a pore structure, the collagen sponge having a tensile strength of 1 N or more and 5 N or less in every direction including a length direction and a width direction. The collagen sponge may be produced by a production method including the following steps: (1) a step of subjecting a collagen solution obtained by mixing collagen and a solvent to stirring and deaeration treatment; (2) a step of subjecting the collagen solution to freeze-dry treatment; and (3) a step of subjecting a dried collagen product after the freeze-dry treatment to insoluble treatment.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 24, 2023
    Assignees: KOKEN CO., LTD., OSAKA UNIVERSITY
    Inventors: Ken Nakata, Gaku Kanno
  • Patent number: 11557668
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 17, 2023
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Ken Nakata
  • Publication number: 20210398801
    Abstract: A method for manufacturing a nitride semiconductor device includes the steps of growing a GaN channel layer on an SiC substrate using a vertical MOCVD furnace set at a first temperature using H2 as a carrier gas, and TMG and NH3 as raw materials, holding the SiC substrate having the grown GaN channel layer in the MOCVD furnace set at a second temperature higher than the first temperature using H2 as a carrier gas, the MOCVD furnace being supplied with NH3, and growing an InAlN layer on the GaN channel layer using the MOCVD furnace set at a third temperature lower than the first temperature using N2 as a carrier gas, and TMI, TMA, and NH3 as raw materials.
    Type: Application
    Filed: December 16, 2019
    Publication date: December 23, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Isao MAKABE, Ken NAKATA
  • Publication number: 20210111278
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Ken NAKATA
  • Patent number: 10971614
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Ken Nakata
  • Patent number: 10943999
    Abstract: A process of forming a field transistor (FET) and a FET are disclosed. The FET includes a nitride semiconductor stack on a substrate. A pair of n+-regions made of oxide semiconductor material are provided within respective recesses in the semiconductor stack. Protecting layers, each made of oxide material, cover peripheries of the n+-regions. Electrodes are provided in openings in the protecting layers to be in direct contact with the n+-regions.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: March 9, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Ken Nakata
  • Publication number: 20210038763
    Abstract: Provided is a collagen sponge which has compressive strength (stress) equivalent to that of a tissue into which the collagen sponge is to be implanted, has no unevenness in structure and stress, and has a pore structure for allowing cells to infiltrate thereinto. The collagen sponge is obtained by subjecting a collagen dispersion, a collagen solution, or a mixture thereof having a collagen concentration of 50 mg/ml or more to freeze-drying and insolubilization treatment thereafter. The collagen sponge thus obtained has a stress of from 10 kPa to 30 kPa when loaded with 10% strain, has in its surface and inside a pore structure having a mean pore diameter ranging from 50 ?m to 400 ?m, and has a pore diameter standard deviation equal to or less than 80% of the mean pore diameter.
    Type: Application
    Filed: October 23, 2020
    Publication date: February 11, 2021
    Applicants: OSAKA UNIVERSITY, KOKEN CO., LTD
    Inventors: Ken NAKATA, Yukihiro SATO, Daisuke IKEDA, Ichiro FUJIMOTO
  • Publication number: 20200373423
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Ken NAKATA
  • Patent number: 10790385
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: September 29, 2020
    Assignee: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
    Inventor: Ken Nakata
  • Publication number: 20200161465
    Abstract: A process of forming a field transistor (FET) and a FET are disclosed. The FET includes a nitride semiconductor stack on a substrate. A pair of n+-regions made of oxide semiconductor material are provided within respective recesses in the semiconductor stack. Protecting layers, each made of oxide material, cover peripheries of the n+-regions. Electrodes are provided in openings in the protecting layers to be in direct contact with the n+-regions.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Ken NAKATA
  • Publication number: 20200121826
    Abstract: To provide a collagen sponge excellent in mechanical strength and a production method for the collagen sponge. A collagen sponge including a porous construct having a pore structure, the collagen sponge having a tensile strength of 1 N or more and 5 N or less in every direction including a length direction and a width direction. The collagen sponge may be produced by a production method including the following steps: (1) a step of subjecting a collagen solution obtained by mixing collagen and a solvent to stirring and deaeration treatment; (2) a step of subjecting the collagen solution to freeze-dry treatment; and (3) a step of subjecting a dried collagen product after the freeze-dry treatment to insoluble treatment.
    Type: Application
    Filed: December 21, 2017
    Publication date: April 23, 2020
    Applicants: KOKEN CO., LTD., OSAKA UNIVERSITY
    Inventors: Ken NAKATA, Gaku KANNO
  • Patent number: 10580887
    Abstract: A process of forming a field effect transistor (FET) and a FET are disclosed. The process includes steps of forming a nitride semiconductor layer on a substrate; selectively growing an n+-region made of oxide semiconductor material on the nitride semiconductor layer and subsequently depositing oxide film on the n+-region; rinsing the oxide film with an acidic solution; forming an opening in the oxide film to expose the oxide semiconductor layer therein; and depositing a metal within the opening such that the metal is in direct contact with the n+-region.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 3, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Ken Nakata
  • Publication number: 20190334023
    Abstract: A high electron mobility transistor (HEMT) made of primarily nitride semiconductor materials is disclosed. The HEMT, which is a type of reverse HEMT, includes, on a C-polar surface of a SiC substrate, a barrier layer and a channel layer each having N-polar surfaces in respective top surfaces thereof. The HEMT further includes an intermediate layer highly doped with impurities and a Schottky barrier layer on the channel layer. The Schottky barrier layer and a portion of the intermediate layer are removed in portions beneath non-rectifying electrodes but a gate electrode is provided on the Schottky barrier layer.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 31, 2019
    Applicant: SUMITOMO ELECTRIC DEVICE INNOVATIONS,INC.
    Inventor: Ken NAKATA