Patents by Inventor Toshiyuki Suzuma
Toshiyuki Suzuma 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).
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Patent number: 11965856Abstract: A method for detecting a metal residue present in an electric-resistance-welded steel pipe includes a first step of inserting the electric-resistance-welded steel pipe into an exciting coil while relatively moving the electric-resistance-welded steel pipe in a longitudinal direction and magnetizing the electric-resistance-welded steel pipe using a direct current at a field intensity capable of magnetizing the electric-resistance-welded steel pipe and the metal residue up to a magnetic saturation state by the exciting coil and a second step of inserting the electric-resistance-welded steel pipe into a detecting coil while relatively moving the electric-resistance-welded steel pipe in the longitudinal direction, detecting an induced electromotive force generated in the detecting coil by a change in a magnetic flux caused by the direct-current magnetization by the exciting coil in the first step as an output signal of the detecting coil, and detecting the metal residue present in the electric-resistance-welded sType: GrantFiled: September 27, 2018Date of Patent: April 23, 2024Assignee: NIPPON STEEL CORPORATIONInventors: Toshiyuki Suzuma, Yoshiyuki Nakao
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Patent number: 11193910Abstract: A device of detecting magnetic characteristic change for a long material includes: an exciting coil into which the long material is inserted and which magnetizes the long material in a longitudinal direction; a detecting coil into which the long material is inserted and which detects a magnetic flux generated in the long material due to magnetization by the exciting coil; and a yoke member which has a first opening portion which is positioned on one side of the long material in the longitudinal direction and into which the long material is inserted and a second opening portion which is positioned on the other side of the long material in the longitudinal direction and into which the long material is inserted, and has a shape which is substantially axially symmetrical about an axis passing the first opening portion and the second opening portion, and the exciting coil and the detecting coil are surrounded by the yoke member, the first opening portion, and the second opening portion.Type: GrantFiled: June 29, 2018Date of Patent: December 7, 2021Assignee: NIPPON STEEL CORPORATIONInventors: Toshiyuki Suzuma, Yoshiyuki Nakao, Yoshiyuki Ota
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Publication number: 20210116417Abstract: A method for detecting a metal residue present in an electric-resistance-welded steel pipe includes a first step of inserting the electric-resistance-welded steel pipe into an exciting coil while relatively moving the electric-resistance-welded steel pipe in a longitudinal direction and magnetizing the electric-resistance-welded steel pipe using a direct current at a field intensity capable of magnetizing the electric-resistance-welded steel pipe and the metal residue up to a magnetic saturation state by the exciting coil and a second step of inserting the electric-resistance-welded steel pipe into a detecting coil while relatively moving the electric-resistance-welded steel pipe in the longitudinal direction, detecting an induced electromotive force generated in the detecting coil by a change in a magnetic flux caused by the direct-current magnetization by the exciting coil in the first step as an output signal of the detecting coil, and detecting the metal residue present in the electric-resistance-welded sType: ApplicationFiled: September 27, 2018Publication date: April 22, 2021Applicant: NIPPON STEEL CORPORATIONInventors: Toshiyuki SUZUMA, Yoshiyuki NAKAO
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Publication number: 20200284758Abstract: A device of detecting magnetic characteristic change for a long material includes: an exciting coil into which the long material is inserted and which magnetizes the long material in a longitudinal direction; a detecting coil into which the long material is inserted and which detects a magnetic flux generated in the long material due to magnetization by the exciting coil; and a yoke member which has a first opening portion which is positioned on one side of the long material in the longitudinal direction and into which the long material is inserted and a second opening portion which is positioned on the other side of the long material in the longitudinal direction and into which the long material is inserted, and has a shape which is substantially axially symmetrical about an axis passing the first opening portion and the second opening portion, and the exciting coil and the detecting coil are surrounded by the yoke member, the first opening portion, and the second opening portion.Type: ApplicationFiled: June 29, 2018Publication date: September 10, 2020Applicant: NIPPON STEEL CORPORATIONInventors: Toshiyuki SUZUMA, Yoshiyuki NAKAO, Yoshiyuki OTA
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Patent number: 9291599Abstract: A magnetic testing apparatus 100 according to the present invention comprises: a first magnetizing device 1 for applying a DC bias magnetic field to a test object P in substantially parallel to the direction in which a flaw F to be detected extends; a second magnetizing device 2 for applying an AC magnetic field to the test object P substantially perpendicularly to the direction in which the flaw F to be detected extends; and a detecting device 3 for detecting leakage flux produced by the magnetization of the test object P accomplished by the first magnetizing device 1 and the second magnetizing device 2.Type: GrantFiled: August 15, 2012Date of Patent: March 22, 2016Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Toshiyuki Suzuma, Yoshiyuki Nakao, Makoto Sakamoto, Yoshiyuki Oota
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Patent number: 9121833Abstract: A defect inspecting apparatus includes a first light source, a first image capture device that receives the reflection light emitted from the first light source and reflected by the outer peripheral surface of a lip part to grab the image of the outer peripheral surface of the lip part, a second light source, a second image capture device 8 that receives the reflection light emitted from the second light source and reflected by a load face to grab the image of the load face, a third light source, a third image capture device that receives the reflection light emitted from the third light source and reflected by a thread bottom face inspection zone 106 to grab the image of the thread bottom face inspection zone, and an inspection device for inspecting defects by processing the captured images grabbed by the first to third image capture devices.Type: GrantFiled: July 17, 2012Date of Patent: September 1, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazunori Anayama, Toshiyuki Suzuma, Yoshiyuki Nakao, Masami Ikeda, Kenta Sakai
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Patent number: 8977580Abstract: The present invention has its objective to provide a defect classification apparatus which suppresses over-fitting and accurately classify the defect type of a defect.Type: GrantFiled: June 8, 2011Date of Patent: March 10, 2015Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Kazunori Anayama, Tetsuya Yadoguchi, Toshiyuki Suzuma, Eiji Honda, Takahiro Okada, Shinya Yoshikawa, Tamotsu Nishimine
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Publication number: 20140191751Abstract: A magnetic testing method and apparatus can accurately detect a flaw by magnetizing a test object to such a degree that the object becomes magnetically saturated while solving the problems of a large magnetizing device is required when only a DC magnetic field is applied and that the test object generates heat when only an AC magnetic field is applied. A magnetic testing apparatus comprises a first magnetizing device for applying a DC bias magnetic field to a test object P in substantially parallel to the direction in which a flaw F to be detected extends, a second magnetizing device for applying an AC magnetic field to the test object P substantially perpendicularly to the direction in which the flaw F to be detected extends, and a detecting device for detecting leakage flux produced by the magnetization of the test object P accomplished by the first and second magnetizing devices.Type: ApplicationFiled: August 15, 2012Publication date: July 10, 2014Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Toshiyuki Suzuma, Yoshiyuki Nakao, Makoto Sakamoto, Yoshiuki Oota
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Publication number: 20130248505Abstract: The welding quality classification apparatus relating to the present invention is an apparatus, wherein a data point indicating feature information of a welded joint to be classified whose welding quality is unknown is mapped to a point in a mapping space which has a dimensional number higher than the number of the features constituting the feature information, and the welding quality of a welded joint to be classified is classified based on which of regions of two welding qualities, which are formed by separating the mapping space with a decision boundary, contains the mapped point, and wherein a discriminant function is determined by adopting a weight which minimizes the sum of the classification error corresponding to classification accuracy of a training dataset and a regularization term having a positive correlation with the dimensional number of the discriminant function as weight for each feature constituting the discriminant function indicating the decision boundary.Type: ApplicationFiled: October 12, 2011Publication date: September 26, 2013Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazunori Anayama, Toshiyuki Suzuma, Hitomi Nishibata, Hiroki Fujimoto, Kiyoyuki Fukui, Masato Uchihara
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Publication number: 20130173508Abstract: The present invention has its objective to provide a defect classification apparatus which suppresses over-fitting and accurately classify the defect type of a defect.Type: ApplicationFiled: June 8, 2011Publication date: July 4, 2013Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kazunori Anayama, Tetsuya Yadoguchi, Toshiyuki Suzuma, Eiji Honda, Takahiro Okada, Shinya Yoshikawa, Tamotsu Nishimine
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Patent number: 8466674Abstract: A magnetic testing apparatus has a magnetizing device applying a rotating magnetic field to a material to be tested, a testing signal detecting device, and a signal processing device applying signal processing to the testing signal. The signal processing device has a first synchronous detecting device detecting a testing signal by using the first current as a reference signal, a second synchronous detecting device detecting an output signal of the first synchronous detecting device by using the second current as a reference signal to extract a candidate flaw signal, and a testing image display device displaying a testing image in which each of pixels has a gray level corresponding to an intensity of the candidate flaw signal at each of positions of the material to be tested, and a phase of the candidate flaw signal at each of the positions is capable of being identified.Type: GrantFiled: May 14, 2009Date of Patent: June 18, 2013Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Toshiyuki Suzuma, Kenji Imanishi
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Publication number: 20120327217Abstract: A defect inspecting apparatus includes a first light source, a first image capture device that receives the reflection light emitted from the first light source and reflected by the outer peripheral surface of a lip part to grab the image of the outer peripheral surface of the lip part, a second light source, a second image capture device 8 that receives the reflection light emitted from the second light source and reflected by a load face to grab the image of the load face, a third light source, a third image capture device that receives the reflection light emitted from the third light source and reflected by a thread bottom face inspection zone 106 to grab the image of the thread bottom face inspection zone, and an inspection device for inspecting defects by processing the captured images grabbed by the first to third image capture devices.Type: ApplicationFiled: July 17, 2012Publication date: December 27, 2012Applicant: SUMITOMO METAL INDUSTRIES, LTD.Inventors: Kazunori ANAYAMA, Toshiyuki SUZUMA, Yoshiyuki NAKAO, Masami IKEDA, Kenta SAKAI
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Publication number: 20110163741Abstract: A magnetic testing apparatus has a magnetizing device applying a rotating magnetic field to a material to be tested, a testing signal detecting device, and a signal processing device applying signal processing to the testing signal. The signal processing device has a first synchronous detecting device detecting a testing signal by using the first current as a reference signal, a second synchronous detecting device detecting an output signal of the first synchronous detecting device by using the second current as a reference signal to extract a candidate flaw signal, and a testing image display device displaying a testing image in which each of pixels has a gray level corresponding to an intensity of the candidate flaw signal at each of positions of the material to be tested, and a phase of the candidate flaw signal at each of the positions is capable of being identified.Type: ApplicationFiled: May 14, 2009Publication date: July 7, 2011Applicant: Sumitomo Metal Industries, Ltd.Inventors: Toshiyuki Suzuma, Kenji Imanishi
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Patent number: 5747988Abstract: A leakage flux flaw detection apparatus in which an object material is magnetized and leakage fluxes derived from a flaw are detected to thereby search for a flaw of the object material in a predetermined flaw-detection direction. The apparatus has a pair of magnet poles for magnetizing the object. material in a direction different from the flaw-detection direction, another pair of magnet poles for magnetizing the object material in a direction different from the magnetization direction and flaw-detection direction of the first pair of magnet poles at a predetermined distance in the flaw-detection direction from the magnetization area of the two magnet poles, and two leakage sensors each of which is interposed between each of the two pairs of magnet poles.Type: GrantFiled: November 8, 1995Date of Patent: May 5, 1998Assignee: Sumitomo Metal Industires LimitedInventor: Toshiyuki Suzuma
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Patent number: 5739685Abstract: A leakage flux flaw detection apparatus in which an object material is magnetized and leakage fluxes derived from a flaw are detected to thereby search for a flaw of the object material in a predetermined flaw-detection direction. The apparatus has a pair of magnet poles for magnetizing the object material in a direction different from the flaw-detection direction, another pair of magnet poles for magnetizing the object material in a direction different from the magnetization direction and flaw-detection direction of the first pair of magnet poles at a predetermined distance in the flaw-detection direction from the magnetization area of the two magnet poles, and two leakage sensors each of which is interposed between each of the two pairs of magnet poles.Type: GrantFiled: November 18, 1996Date of Patent: April 14, 1998Assignee: Sumitomo Metal Industries LimitedInventor: Toshiyuki Suzuma