Patents by Inventor Hironobu Takizawa

Hironobu Takizawa 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: 10595717
    Abstract: A capsule endoscope system includes: a capsule endoscope configured to be introduced into a subject and having a magnetic field response unit configured to respond to a magnetic field and having an imaging unit configured to image an object; a magnetic field generating unit configured to generate the magnetic field to guide the capsule endoscope; an input unit configured to input commands for changing at least one of a position and a posture of the capsule endoscope; a setting unit configured to set a reference distance between the imaging unit and the object; a detection unit configured to detect a distance between the object and the imaging unit; and a magnetic field controller configured to control the magnetic field generating unit to generate the magnetic field based on the distance and the commands while a difference between the distance and the reference distance is maintained within a certain range.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: March 24, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Hironao Kawano, Hironobu Takizawa
  • Patent number: 10578518
    Abstract: A control unit (6) estimates an output value of a PM sensor (S2) located at a downstream side of a DPF used as a reference filter, and detects whether the estimated output value exceeds a predetermined value (S3). When the estimated output value exceeds the predetermined value (YES in S3), the control unit detects an output value of the PM sensor (S4), and a heater heats the PM sensor (S5). The control unit detects an output value of the PM sensor (S6) after the PM sensor is heated, and calculates a change ratio of the output values of the PM sensor before and after heating (S7). The control unit estimates an average particle size of PM based on the calculated change ratio (S8), and detects whether the DPF has failed based on a comparison result of a corrected output value of the PM sensor with a threshold value.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: March 3, 2020
    Assignee: DENSO CORPORATION
    Inventors: Hironobu Shimokawa, Kazuhiko Koike, Kensuke Takizawa, Manabu Yoshidome, Masayuki Tamura
  • Patent number: 10285886
    Abstract: A load measuring pin sensor disposed as a connecting pin in a connecting portion of a plurality of frames of a bed is provided. The load measuring pin sensor includes a shaft portion constituting the connecting pin, force point portions provided on the shaft portion where a load from one frame acts on the force point portions, a fulcrum portion provided at a position different from a position of the force point portions of the shaft portion where a stress from the other frame acts on the fulcrum portion, sensing portions provided at a portion connecting the force point portions, and the fulcrum portion of the shaft portion, and a strain gauge that detects strain occurring in the sensing portions.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: May 14, 2019
    Assignees: SHINKO SHOJI CO., LTD., PARAMOUNT BED CO., LTD.
    Inventors: Taihei Wako, Masanao Takizawa, Toshiaki Yamazaki, Yoshinori Ishibashi, Hironobu Maezawa
  • Publication number: 20170150874
    Abstract: A capsule endoscope system includes: a capsule endoscope configured to be introduced into a subject and having a magnetic field response unit configured to respond to a magnetic field and having an imaging unit configured to image an object; a magnetic field generating unit configured to generate the magnetic field to guide the capsule endoscope; an input unit configured to input commands for changing at least one of a position and a posture of the capsule endoscope; a setting unit configured to set a reference distance between the imaging unit and the object; a detection unit configured to detect a distance between the object and the imaging unit; and a magnetic field controller configured to control the magnetic field generating unit to generate the magnetic field based on the distance and the commands while a difference between the distance and the reference distance is maintained within a certain range.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Hironao KAWANO, Hironobu TAKIZAWA
  • Publication number: 20170015799
    Abstract: The present invention provides a fiber-reinforced resin composite as a fiber-reinforced resin composite (E) including a fiber-reinforced resin (C), which contains a reinforcing fiber (A) and a matrix resin (B), and a reinforcing material (D), in which the reinforcing material (D) contains a cellulose nanofiber (F), and the cellulose nanofiber (F) is obtained by micronizing cellulose in a fibrillated resin (G), and provides a reinforced matrix resin for the fiber-reinforced resin. The present invention also provides a fiber-reinforced resin composite in which the cellulose nanofiber (F) is a modified cellulose nanofiber (F1) that is obtained by micronizing cellulose in the fibrillated resin (G) and then reacting the cellulose with a cyclic polybasic acid anhydride (J).
    Type: Application
    Filed: September 28, 2016
    Publication date: January 19, 2017
    Inventors: Takeshi Yamazaki, Tetsuya Harada, Takahito Ikuma, Hironobu Takizawa
  • Patent number: 9517001
    Abstract: A capsule endoscope system includes: a capsule endoscope configured to be introduced into a subject; a guiding unit that generates a magnetic field to guide the capsule endoscope; a guidance magnetic field control unit that switches between ON and OFF of the magnetic field; a body posture discriminating unit that discriminates a body posture of the subject; a model extracting unit that extracts a body posture model according to the body posture of the subject, from among prepared body posture models, and extracts an organ model according to the body posture of the subject, from among prepared organ models; and a display control unit configured to: superimpose the organ model according to the body posture of the subject, on the extracted body posture model when the magnetic field is ON; and display the extracted body posture model and to hide the organ model when the magnetic field is OFF.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 13, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Atsushi Chiba, Hironobu Takizawa, Ryoji Sato, Hironao Kawano, Kazuhiko Takahashi, Takuto Ikai
  • Publication number: 20160213232
    Abstract: A guidance device includes: a permanent magnet; an accommodating portion; a shielding member configured to shield the magnetic field generated by the permanent magnet; a supporting mechanism configured to support the permanent magnet between a first position and a second position; a driving unit configured to operate the supporting mechanism upon receiving an electric power supply; and a shielding member moving mechanism configured to move the shielding member between a shielding position and a non-shielding position in conjunction with an operation of the supporting mechanism causing the permanent magnet to move in a vertical direction. When the electric power supply to the driving unit stops, the shielding member moving mechanism moves the shielding member to the shielding position in conjunction with an operation of the supporting mechanism causing the permanent magnet to move to the first position.
    Type: Application
    Filed: April 1, 2016
    Publication date: July 28, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Miho KATAYAMA, Hironao KAWANO, Hironobu TAKIZAWA, Shinsuke TANAKA
  • Publication number: 20160166133
    Abstract: A capsule endoscope system includes: a capsule endoscope configured to be introduced into a subject; a guiding unit that generates a magnetic field to guide the capsule endoscope; a guidance magnetic field control unit that switches between ON and OFF of the magnetic field; a body posture discriminating unit that discriminates a body posture of the subject; a model extracting unit that extracts a body posture model according to the body posture of the subject, from among prepared body posture models, and extracts an organ model according to the body posture of the subject, from among prepared organ models; and a display control unit configured to: superimpose the organ model according to the body posture of the subject, on the extracted body posture model when the magnetic field is ON; and display the extracted body posture model and to hide the organ model when the magnetic field is OFF.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 16, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Atsushi CHIBA, Hironobu TAKIZAWA, Ryoji SATO, Hironao KAWANO, Kazuhiko TAKAHASHI, Takuto IKAI
  • Publication number: 20150065801
    Abstract: A guidance device applies a magnetic field to a capsule medical apparatus within which a first permanent magnet is arranged when the capsule medical apparatus is introduced into a subject, to guide the capsule medical apparatus within the subject. The guidance device includes a second permanent magnet that is configured to be disposed outside the subject and has a rectangular parallelepiped shape or a polygonal column shape, the second permanent magnet having a first plane containing a magnetization direction and a first direction orthogonal to the magnetization direction, and being configured to confine the capsule medical apparatus within a region facing the first plane. The second permanent magnet has a length in the first direction longer than a length in the magnetization direction.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 5, 2015
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Atsushi CHIBA, Hironobu TAKIZAWA, Hironao KAWANO
  • Publication number: 20150005413
    Abstract: The present invention provides a fiber-reinforced resin composite as a fiber-reinforced resin composite (E) including a fiber-reinforced resin (C), which contains a reinforcing fiber (A) and a matrix resin (B), and a reinforcing material (D), in which the reinforcing material (D) contains a cellulose nanofiber (F), and the cellulose nanofiber (F) is obtained by micronizing cellulose in a fibrillated resin (G), and provides a reinforced matrix resin for the fiber-reinforced resin. The present invention also provides a fiber-reinforced resin composite in which the cellulose nanofiber (F) is a modified cellulose nanofiber (F1) that is obtained by micronizing cellulose in the fibrillated resin (G) and then reacting the cellulose with a cyclic polybasic acid anhydride (J).
    Type: Application
    Filed: February 15, 2013
    Publication date: January 1, 2015
    Applicant: DIC CORPORATION
    Inventors: Takeshi Yamazaki, Tetsuya Harada, Takahito Ikuma, Hironobu Takizawa
  • Publication number: 20140296634
    Abstract: An object of the present invention is to actively control at least one of the position and direction of the imaging field in a subject and to observe a desired observed region in the subject certainly in a short period of time. A body-insertable device system according to the present invention includes a capsule endoscope 1 introduced into a subject and a permanent magnet 3. An imaging unit of the capsule endoscope 1 for taking an image inside the subject is fixed in a casing. The capsule endoscope 1 includes a drive unit for changing at least one of the position and posture of the casing in the liquid 2a which is also introduced in the subject 100. The permanent magnet 3 controls the operation of the drive unit for changing at least one of the position and posture of the casing in the liquid 2a.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Hironao KAWANO, Hironobu TAKIZAWA, Hidetake SEGAWA, Isao AOKI, Katsumi Hirakawa, Satomi KOBAYASHI, Hideo ITO
  • Patent number: 8790247
    Abstract: An object of the present invention is to actively control at least one of the position and direction of the imaging field in a subject and to observe a desired observed region in the subject certainly in a short period of time. A body-insertable device system according to the present invention includes a capsule endoscope 1 introduced into a subject and a permanent magnet 3. An imaging unit of the capsule endoscope 1 for taking an image inside the subject is fixed in a casing. The capsule endoscope 1 includes a drive unit for changing at least one of the position and posture of the casing in the liquid 2a which is also introduced in the subject 100. The permanent magnet 3 controls the operation of the drive unit for changing at least one of the position and posture of the casing in the liquid 2a.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: July 29, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hironao Kawano, Hironobu Takizawa, Hidetake Segawa, Isao Aoki, Katsumi Hirakawa, Satomi Kobayashi, Hideo Ito
  • Patent number: 8790248
    Abstract: An indwelling apparatus (5) for holding a capsule endoscope (3) is arranged with a control device (57) including an optical sensor (73), a control board (66) configuring a controller and a reset circuit, a driver board (68) configuring an electromagnet driver, and an electromagnet (70), where when the optical sensor (73) detects the light, the controller performs the drive control of the electromagnet (70) at every constant time interval to turn ON the reed switch (14) and supply power to the capsule endoscope (3) thereby operating the capsule endoscope (3) only when observation is necessary, and thus the battery drain of the capsule endoscope is reduced.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: July 29, 2014
    Assignees: Olympus Medical Systems Corp., Olympus Corporation
    Inventors: Akio Uchiyama, Hironobu Takizawa, Shinsuke Tanaka, Katsumi Hirakawa, Takeshi Yokoi
  • Patent number: 8764639
    Abstract: Provided is a capsule medical apparatus including a capsule body, a control member, and an observing member. The capsule body is to be introduced into a lumen of a subject. The control member controls a movement of the capsule body in the lumen by a flow of a fluid introduced in the lumen. The observing member is fixed inside the capsule body and observes a direction of the flow of the fluid and a direction different from the flow of the fluid according to the movement of the capsule body.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: July 1, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hidetake Segawa, Hironobu Takizawa
  • Patent number: 8753265
    Abstract: An encapsulated endoscope system in accordance with the present invention comprises: an encapsulated endoscope that rotates to develop a thrust; a controller that moves the encapsulated endoscope in an intended direction of advancement; an imaging unit incorporated in the encapsulated endoscope; and an image processing unit that receives image data sent from the imaging unit, and produces an image, which results from rotation of the received image data, according to the rotational phase of the encapsulated endoscope.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 17, 2014
    Assignee: Olympus Corporation
    Inventors: Akio Uchiyama, Hironobu Takizawa, Takeshi Yokoi, Hitoshi Mizuno
  • Patent number: 8740774
    Abstract: Using a guidance system with a simple configuration, propulsive motion along a longitudinal direction and changing of the propulsion direction are easily performed with good precision and stability. There is provided a capsule-type medical apparatus which is inserted into the body of a subject and is guided by an external magnetic field, the capsule-type medical apparatus comprising: a substantially cylindrical capsule; a propulsion mechanism for converting rotary motion about a longitudinal axis R of the capsule into propulsive motion along the longitudinal axis R; a magnet accommodated inside the capsule and disposed in such a manner that the magnetic-pole direction thereof can be switched between a direction along the longitudinal axis R and a direction intersecting the longitudinal axis R; and a securing portion for securing the magnet to the capsule in each of the switched states of the magnetic-pole direction.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: June 3, 2014
    Assignees: Olympus Corporation, Olympus Medical Systems Corp.
    Inventors: Hironobu Takizawa, Hironao Kawano, Akio Uchiyama, Shinsuke Tanaka, Atsushi Chiba
  • Patent number: 8735470
    Abstract: The present invention provides a method for manufacturing a cellulose nanofiber, characterized by comprising the step of fibrillating cellulose in a polyester based resin, preferably in a polyester based resin having an ester group concentration of 6.0 mmol/g or more and a cellulose nanofiber produced by the manufacturing method concerned. In addition, the present invention provides a masterbatch composition containing the cellulose nanofibers and the polyester based resin. Furthermore, the present invention provides a resin composition containing the masterbatch composition and a diluent resin and a processed product thereof.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 27, 2014
    Assignee: DIC Corporation
    Inventors: Hironobu Takizawa, Tetsuya Harada, Takeshi Yamazaki, Jianye Jiang
  • Patent number: 8731637
    Abstract: Provided is an intra-subject medical system which includes a body-insertable device and a physical quantity generator. The body-insertable device is to be introduced into a subject, is covered by a capsule-shaped exterior member, and includes a physical quantity detecting member which has a directivity to detect a predetermined physical quantity; at least one functional member which has a necessary function for examining or treating inside the subject; and a switch control unit which controls an on/off state or operation mode of the at least one functional member when the physical quantity detecting member detects a physical quantity. The physical quantity generator has a physical quantity emitting unit which emits a temporary physical quantity inside the subject; and a physical quantity direction changing unit which changes an emission direction of the physical quantity.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: May 20, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Hironao Kawano, Hironobu Takizawa, Akio Uchiyama, Atsushi Chiba, Takeshi Yokoi, Hideo Ito, Hidetake Segawa
  • Patent number: 8632459
    Abstract: An intra-subject observation system includes a first liquid inserted into a desired organ of a subject; and a second liquid inserted into the organ without being mixed with the first liquid due to a specific gravity lighter than that of the first liquid. The system also includes a capsule medical apparatus inserted into the organ with an intermediate specific gravity between the specific gravity of the first liquid and that of the second liquid to acquire intra-subject information, which is output out of the subject by radio.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: January 21, 2014
    Assignee: Olympus Medical Sytems Corp.
    Inventors: Isao Aoki, Katsumi Hirakawa, Hironobu Takizawa, Hidetake Segawa, Hironao Kawano, Hideo Ito, Hideki Shimonaka
  • Patent number: 8579883
    Abstract: A body-insertable apparatus according to an aspect of the present invention is introduced into a subject to inject medical agent stored in a casing into a desired part in the subject. The body-insertable apparatus includes a fixing unit which fixes the casing to the desired part; and a projecting unit which projects, from the casing, an injection needle for injecting the medical agent. The fixing unit and the projecting unit are driven by a driving source.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: November 12, 2013
    Assignee: Olympus Corporation
    Inventors: Shinsuke Tanaka, Hironobu Takizawa, Hironao Kawano