Patents by Inventor Junichi Koyama

Junichi Koyama 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: 11065008
    Abstract: An embolic coil is formed by being spirally wound by an element wire and is filled into an aneurysm. The embolic coil includes: a first coil portion, in which a large-diameter coil portion wound to have a large diameter D1 and a small-diameter coil portion wound to have a diameter D2 smaller than the large-diameter coil portion are arranged in a plurality of coils and alternately in a longitudinal direction Y of the embolic coil. A second coil portion is wound to be continuous with the first coil portion and to have a surface flatter than the first coil portion.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: July 20, 2021
    Assignees: SHINSHU UNIVERSITY, Mikuro Spring Co., Ltd.
    Inventors: Junichi Koyama, Takuya Kojima, Makoto Natori, Yusuke Sato
  • Patent number: 11040404
    Abstract: A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: June 22, 2021
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., BIG DAISHOWA SEIKI CO., LTD.
    Inventors: Naoki Matsuda, Hideo Maeno, Chikara Kimura, Yoshihiro Kuroda, Takafumi Takami, Junichi Koyama, Masahiro Sasano
  • Publication number: 20200406368
    Abstract: A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.
    Type: Application
    Filed: September 13, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., BIG DAISHOWA SEIKI CO., LTD.
    Inventors: Naoki MATSUDA, Hideo MAENO, Chikara KIMURA, Yoshihiro KURODA, Takafumi TAKAMI, Junichi KOYAMA, Masahiro SASANO
  • Publication number: 20190142436
    Abstract: An embolic coil is formed by being spirally wound by an element wire and is filled into an aneurysm. The embolic coil includes: a first coil portion, in which a large-diameter coil portion wound to have a large diameter D1 and a small-diameter coil portion wound to have a diameter D2 smaller than the large-diameter coil portion are arranged in a plurality of coils and alternately in a longitudinal direction Y of the embolic coil. A second coil portion is wound to be continuous with the first coil portion and to have a surface flatter than the first coil portion.
    Type: Application
    Filed: December 6, 2016
    Publication date: May 16, 2019
    Applicants: SHINSHU UNIVERSITY, Mikuro Spring Co., Ltd.
    Inventors: Junichi KOYAMA, Takuya KOJIMA, Makoto NATORI, Yusuke SATO
  • Patent number: 9789525
    Abstract: A machine tool for bending a workpiece by clamping the workpiece with a die and a punch is configured to: distinguish a material characteristic of the workpiece as an actual value and a nominal value; determine an actual material characteristic during an machining operation and re-calculate an operation target value suitable for the workpiece; and bend the workpiece by operating the punch in accordance with the suitable operation target value thus re-calculated.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: October 17, 2017
    Assignee: AMADA COMPANY, LIMITED
    Inventors: Takahiro Shibata, Yingjun Jin, Junichi Koyama
  • Publication number: 20170157659
    Abstract: A method for bending a flat workpiece is provided. The method may include applying heat or pressure to the workpiece at a range within a first width from an edge with a residual stress formed by cutting so as to reduce the residual stress, and bending the workpiece along a bending line after applying the heat or pressure.
    Type: Application
    Filed: February 21, 2017
    Publication date: June 8, 2017
    Applicant: AMADA COMPANY, LIMITED
    Inventors: Yingjun JIN, Takahiro SHIBATA, Junichi KOYAMA, Hitoshi OMATA
  • Patent number: 9610624
    Abstract: A device for regulating a residual stress is comprised of: input means; a residual stress database; a process condition database; first searching means for searching a residual stress (?0) from the residual stress database; a calculator for calculating a first bending moment (Mrs) in a ridge line originated from the residual stress, and a second bending moment (Mz) in the ridge line originated from bending to obtain a total bending moment (Mrs?Mz) and calculating a camber curvature (?z) of the workpiece originated from the total bending moment (Mrs?Mz); comparing a difference (|?z??z0|) between the camber curvature (?z) and a target value (?z0) with a tolerable value (?); second searching means for searching a process condition satisfying a tolerable condition (|?z??z0|??) from the process condition database when (|?z??z0|>?); and regulating means for regulating a residual stress.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: April 4, 2017
    Assignee: AMADA COMPANY, LIMITED
    Inventors: Yingjun Jin, Takahiro Shibata, Junichi Koyama, Hitoshi Omata
  • Publication number: 20150246382
    Abstract: A machine tool for bending a workpiece by clamping the workpiece with a die and a punch is configured to: distinguish a material characteristic of the workpiece as an actual value and a nominal value; determine an actual material characteristic during an machining operation and re-calculate an operation target value suitable for the workpiece; and bend the workpiece by operating the punch in accordance with the suitable operation target value thus re-calculated.
    Type: Application
    Filed: October 23, 2013
    Publication date: September 3, 2015
    Applicant: AMADA COMPANY, LIMITED
    Inventors: Takahiro Shibata, Yingjun Jin, Junichi Koyama
  • Publication number: 20140283576
    Abstract: A sheet material processing apparatus has a pressurizing part of a sheet material and a supporting part of the pressurized sheet material. The apparatus includes an end face pressing upper press die that receives a pressurizing force, an end face pressing lower press die that is arranged on the supporting part and faces the end face pressing upper press die so that an end face of the sheet material is inserted between the end face pressing upper and lower press dies, an end face pressing part that, with the end face pressing upper press die being moved toward the end face pressing lower press die, presses the end face of the sheet material, and an end face pressing width adjusting part that sets a pressing width of the end face of the sheet material.
    Type: Application
    Filed: November 1, 2012
    Publication date: September 25, 2014
    Inventors: Yingjun Jin, Takahiro Shibata, Junichi Koyama
  • Publication number: 20130283875
    Abstract: A device for regulating a residual stress is comprised of: input means; a residual stress database; a process condition database; first searching means for searching a residual stress (?0) from the residual stress database; a calculator for calculating a first bending moment (Mrs) in a ridge line originated from the residual stress, and a second bending moment (Mz) in the ridge line originated from bending to obtain a total bending moment (Mrs?Mz) and calculating a camber curvature (?z) of the workpiece originated from the total bending moment (Mrs?Mz); comparing a difference (|?z??z0|) between the camber curvature (?z) and a target value (?z0) with a tolerable value (?); second searching means for searching a process condition satisfying a tolerable condition (|?z??z0|??) from the process condition database when (|?z??z0|>?); and regulating means for regulating a residual stress.
    Type: Application
    Filed: January 13, 2012
    Publication date: October 31, 2013
    Applicant: AMADA COMPANY, LIMITED
    Inventors: Yingjun Jin, Takahiro Shibata, Junichi Koyama, Hitoshi Omata
  • Publication number: 20090161811
    Abstract: Problem: To provide a refueling support system in which fuel transfer procedure establishing operations and associated operations precisely reflecting the fuel burnup conditions can be efficiently performed at the time of scheduled outages at a nuclear power plant.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 25, 2009
    Applicant: GLOBAL NUCLEAR FUEL-JAPAN CO., LTD.
    Inventors: Hitoshi SATO, Junichi KOYAMA
  • Patent number: 7518984
    Abstract: An IP-PBX has a software-based built-in control unit, a card slot into which a control card is plugged, and a data bus connecting the software-based control unit and the card slot. The software-based control unit includes a first management unit managing up to a first number of IP terminals, and an IP terminal registering unit connected to the first management unit and the card slot. The control card includes a second management unit managing up to a second number of IP terminals. The IP terminal registering unit compares a current number of IP terminals managed by the first management unit with the first number when an IP terminal requests communication. The IP terminal has an ID number and an IP address. If the current number is smaller than the first number, the IP terminal registering unit associates the first management unit with the ID number and the IP address, and the first management unit manages the IP terminal.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: April 14, 2009
    Assignee: NEC Corporation
    Inventor: Junichi Koyama
  • Patent number: 7448377
    Abstract: An intubation assistance instrument which is used by being inserted into the trachea of a patient through the mouth thereof includes an insertion section having a straight portion with a tip part and a curved portion continuously extended from the tip part of the straight portion. The insertion section is formed with a groove along a longitudinal direction thereof. The curved section has an inner wall part and an outer wall part which define the groove, and the outer wall part is formed with a cut out portion other than a tip part of the curved portion. The intubation assistance instrument and an intubation assistance apparatus provided with the instrument make it possible to carry out intubation operation with simple operation easily and safely.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: November 11, 2008
    Assignees: HOYA Corporation
    Inventors: Junichi Koyama, Yukio Taniguchi
  • Publication number: 20070106121
    Abstract: An intubation assistance apparatus includes a main body and an intubation assistance instrument detachably mounted to the main body. The intubation assistance instrument has an elongated insertion section for insertion into the trachea or its vicinity of a patient from the mouth. The insertion section of the intubation assistance instrument is provided with a groove for leading an intubation tube to the trachea of the patient and a scope guide bore for receiving a laryngoscope with a CCD and a white LED. A distal end portion of the scope guide bore is fluid-tightly (air-tightly) sealed. The scope guide bore is fluid-tightly (air-tightly) sealed in its entirety in a state that the intubation assistance instrument is mounted to the main body. A plate-like tongue piece protruding forward and having optical transparency is formed on a distal end portion of the insertion section.
    Type: Application
    Filed: October 24, 2006
    Publication date: May 10, 2007
    Applicants: PENTAX Corporation
    Inventors: Hidetaka Yokota, Yukio Taniguchi, Junichi Koyama
  • Patent number: 7156091
    Abstract: An oral airway, which is used by being inserted into the mouth of a patient who is suffering from unconsciousness or has lost consciousness to secure an airway of the patient, is adapted to be used with a tube to be inserted into the trachea of the patient through the mouth thereof. The oral air way includes a main body, and an insertion part provided on the main body. The insertion part is adapted to be inserted into the trachea of the patient through the mouth thereof so that an appropriate portion of the insertion part at the side of the distal end thereof comes into contact with the root of the tongue of the patient to secure the airway of the patient. The insertion part includes a guide groove for guiding the tube when the tube is inserted into the trachea of the patient, and the guide groove has a structure from which the tube can be separated after the distal end of the tube has been inserted into the trachea of the patient.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: January 2, 2007
    Assignee: PENTAX Corporation
    Inventors: Junichi Koyama, Kei Jin Shu, Takao Nawakura, Yukio Taniguchi
  • Patent number: 7040129
    Abstract: An actual plate thickness and actual material constants are measured during punching before bending. The measured information is reflected on the bending, so that the bending is performed efficiently and accurately. Punching is carried out for each blank developed based on a nominal plate thickness and nominal material constants in blanking before the bending of a work W. Then, an actual plate thickness distribution and an actual material constant distribution of the work W are calculated based on various data containing a ram stroke and a pressure detected in the punching.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: May 9, 2006
    Assignee: Amada Company, Limited
    Inventors: Junichi Koyama, Hitoshi Omata, Osamu Hayama, Kazunari Imai, Tokuro Takehara, Tetsuya Anzai
  • Publication number: 20060065268
    Abstract: An intubation assistance instrument which is used by being inserted into the trachea of a patient through the mouth thereof includes an insertion section having a straight portion with a tip part and a curved portion continuously extended from the tip part of the straight portion. The insertion section is formed with a groove along a longitudinal direction thereof. The curved section has an inner wall part and an outer wall part which define the groove, and the outer wall part is formed with a cut out portion other than a tip part of the curved portion. The intubation assistance instrument and an intubation assistance apparatus provided with the instrument make it possible to carry out intubation operation with simple operation easily and safely.
    Type: Application
    Filed: September 27, 2005
    Publication date: March 30, 2006
    Applicants: PENTAX Corporation, Junichi KOYAMA
    Inventors: Junichi Koyama, Yukio Taniguchi
  • Patent number: 7007530
    Abstract: In bending a workpiece, a position of the workpiece relatively pressed down by a punch is directly detected by a plurality of position detectors provided in a V-groove of a die, and a bending speed calculation section obtains a bending speed from a change in this position. If bending speeds at position of the respective position detectors differ, a uniform speed arithmetic operation section calculates a bending speed to make the bending speeds at the positions of all of the position detectors, and a driving shaft instruction section controls driving shafts to bend the workpiece at the uniform bending speed.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: March 7, 2006
    Assignee: Amada Company, Limited
    Inventors: Junichi Koyama, Kazunari Imai, Hitoshi Omata, Osamu Hayama, Hidekatsu Ikeda
  • Patent number: 6941784
    Abstract: A bending method includes determining a provisional bending stroke value that resulted in a predetermined angle during test bending. The bending method also includes calculating a stroke value correction amount for correcting the provisional bending stroke value, based on the number of times a test piece was contacted to obtain the predetermined angle during test bending. The stroke value correction amount is added to the provisional stroke value to obtain a corrected stroke value, so as to obtain the predetermined angle during operational bending using the corrected stroke value.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: September 13, 2005
    Assignee: Amada Company, Limited
    Inventors: Junichi Koyama, Osamu Hayama, Hitoshi Omata, Kazunari Imai
  • Publication number: 20050150500
    Abstract: An oral airway, which is used by being inserted into the mouth of a patient who is suffering from unconsciousness or has lost consciousness to secure an airway of the patient, is adapted to be used with a tube to be inserted into the trachea of the patient through the mouth thereof. The oral air way includes a main body, and an insertion part provided on the main body. The insertion part is adapted to be inserted into the trachea of the patient through the mouth thereof so that an appropriate portion of the insertion part at the side of the distal end thereof comes into contact with the root of the tongue of the patient to secure the airway of the patient. The insertion part includes a guide groove for guiding the tube when the tube is inserted into the trachea of the patient, and the guide groove has a structure from which the tube can be separated after the distal end of the tube has been inserted into the trachea of the patient.
    Type: Application
    Filed: November 12, 2004
    Publication date: July 14, 2005
    Applicant: PENTAX Corporation
    Inventors: Junichi Koyama, Kei Shu, Takao Nawakura, Yukio Taniguchi