Patents by Inventor Koichi Takezawa

Koichi Takezawa 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: 12144619
    Abstract: A blood measurement device (10) includes a light emitting part (11) that emits a light beam that is to transmit through a measurement site (18), a light receiving part (19) that receives the light beam that has transmitted through the measurement site (18), an integrating sphere part (14) interposed in an optical path along which the light beam emitted from the light emitting part (11) reaches the light receiving part (19), the integrating sphere part (14) having formed inside a reflection surface (26) that reflects the light beam, a light entry part (23) which is an opening provided at the integrating sphere part (14) and through which the light beam applied from the light emitting part (11) enters an inside of the integrating sphere part (14), and a light exit part (16) which is an opening provided at the integrating sphere part (14) and through which the light beam reflected by the reflection surface (26) of the integrating sphere part (14) is emitted from the integrating sphere part (14) toward the measur
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: November 19, 2024
    Assignees: LOOK TEC CO., LTD, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Hitoshi Ogura, Koichi Takezawa, Takayuki Asao
  • Publication number: 20230270359
    Abstract: A blood measurement device (10) includes a light emitting part (11) that emits a light beam that is to transmit through a measurement site (18), a light receiving part (19) that receives the light beam that has transmitted through the measurement site (18), an integrating sphere part (14) interposed in an optical path along which the light beam emitted from the light emitting part (11) reaches the light receiving part (19), the integrating sphere part (14) having formed inside a reflection surface (26) that reflects the light beam, a light entry part (23) which is an opening provided at the integrating sphere part (14) and through which the light beam applied from the light emitting part (11) enters an inside of the integrating sphere part (14), and a light exit part (16) which is an opening provided at the integrating sphere part (14) and through which the light beam reflected by the reflection surface (26) of the integrating sphere part (14) is emitted from the integrating sphere part (14) toward the measur
    Type: Application
    Filed: June 4, 2021
    Publication date: August 31, 2023
    Applicants: LOOK TEC CO., LTD., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Hitoshi Ogura, Koichi Takezawa, Takayuki Asao
  • Publication number: 20230233110
    Abstract: Provided is a blood measurement device capable of accurately estimating the amount of a component contained in blood by passing light beams for calculating the amount of the component contained in blood along the same optical axis. A blood measurement device 10 of the present invention includes a light emitting part 11 having a first light emitting part 111 and a second light emitting part 112, a light receiving part 19, an actuator 16, and a computation and control part 17 that estimates a glucose level and controls operation of the actuator 16.
    Type: Application
    Filed: October 2, 2020
    Publication date: July 27, 2023
    Applicants: LOOK TEC CO., LTD., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Hitoshi Ogura, Koichi Takezawa, Takayuki Asao, Fumio Hayashi
  • Patent number: 7587727
    Abstract: A pickup device comprises a flexible circuit member including a main circuit portion on which electric or electronic components are mounted and a sub-circuit portion connected to the main circuit portion. The pickup device further comprises a housing on which the flexible circuit member is mounted. Each of the main circuit portion and the sub-circuit portion has a single-sided structure and includes a ground portion. The sub-circuit portion is folded with respect to the main circuit portion. The flexible circuit member is mounted on the housing while the main circuit portion and the sub-circuit portion are held in an overlapping arrangement. With this arrangement, S/N ratio of electric signals can be improved while achieving cost reduction.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: September 8, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Hajime Iizuka, Yasuhito Kojima, Koichi Takezawa
  • Publication number: 20050229196
    Abstract: A pickup device comprises a flexible circuit member including a main circuit portion on which electric or electronic components are mounted and a sub-circuit portion connected to the main circuit portion. The pickup device further comprises a housing on which the flexible circuit member is mounted. Each of the main circuit portion and the sub-circuit portion has a single-sided structure and includes a ground portion. The sub-circuit portion is folded with respect to the main circuit portion. The flexible circuit member is mounted on the housing while the main circuit portion and the sub-circuit portion are held in an overlapping arrangement. With this arrangement, S/N ratio of electric signals can be improved while achieving cost reduction.
    Type: Application
    Filed: April 7, 2005
    Publication date: October 13, 2005
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hajime Iizuka, Yasuhito Kojima, Koichi Takezawa