Patents by Inventor Takahiko Oshige
Takahiko Oshige 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: 10859507Abstract: A surface defect inspection method includes: acquiring an original image by capturing an image of a subject of an inspection; generating texture feature images by applying a filtering process using spatial filters to the original image; generating a feature vector at each position of the original image, by extracting a value at a corresponding position from each of the texture feature images, for each of the positions of the original image; generating an abnormality level image representing an abnormality level for each position of the original image, by calculating, for each of the feature vectors, an abnormality level in a multi-dimensional distribution formed by the feature vectors; and detecting a part having the abnormality level that is higher than a predetermined level in the abnormality level image as a defect portion or a defect candidate portion.Type: GrantFiled: February 28, 2018Date of Patent: December 8, 2020Assignee: JFE Steel CorporationInventors: Takahiro Koshihara, Yoshiyuki Umegaki, Takahiko Oshige
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Publication number: 20200025690Abstract: A surface defect inspection method includes: acquiring an original image by capturing an image of a subject of an inspection; generating texture feature images by applying a filtering process using spatial filters to the original image; generating a feature vector at each position of the original image, by extracting a value at a corresponding position from each of the texture feature images, for each of the positions of the original image; generating an abnormality level image representing an abnormality level for each position of the original image, by calculating, for each of the feature vectors, an abnormality level in a multi-dimensional distribution formed by the feature vectors; and detecting a part having the abnormality level that is higher than a predetermined level in the abnormality level image as a defect portion or a defect candidate portion.Type: ApplicationFiled: February 28, 2018Publication date: January 23, 2020Applicant: JFE Steel CorporationInventors: Takahiro Koshihara, Yoshiyuki Umegaki, Takahiko Oshige
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Patent number: 9594191Abstract: A solar reflector plate maintains an excellent reflectance of a reflective layer and has excellent sand resistance and weather resistance. The solar reflector plate includes a substrate; a reflective layer provided onto the substrate; and a protective layer provided onto the reflective layer, wherein the protective layer contains silicon in an amount of 10% by mass to 60% by mass in terms of SiO2 and an organic substance, and has 1.5 to 3.2 oxygen atoms on average that form a chemical bond with silicon.Type: GrantFiled: March 19, 2013Date of Patent: March 14, 2017Assignee: JFE Steel CorporationInventors: Kazumichi Sashi, Takahiko Oshige, Shin Ishikawa, Yoshihito Sakamoto, Takahiro Kubota
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Patent number: 9234680Abstract: A solar light reflecting plate used for a light condensing and heat collecting device which includes a solar light reflecting plate that reflects and condenses solar light and a heat collecting tube that receives the solar light condensed by the solar light reflecting plate and is heated by the condensed solar light, wherein the solar light reflecting plate includes at least a rolled substrate, a surface roughness of a solar light reflecting surface that is an outermost surface and that reflects solar light is 0.02 ?m to 1.0 ?m in terms of arithmetic mean roughness Ra, and the solar light reflecting plate is disposed so that an angle between a rolling direction of the substrate and a longitudinal direction of the heat collecting tube is 80° to 100°.Type: GrantFiled: August 9, 2012Date of Patent: January 12, 2016Assignee: JFE Steel CorporationInventors: Kazumichi Sashi, Takahiko Oshige, Naoki Nishiyama, Yoshihito Sakamoto
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Publication number: 20150109696Abstract: A solar reflector plate maintains an excellent reflectance of a reflective layer and has excellent sand resistance and weather resistance. The solar reflector plate includes a substrate; a reflective layer provided onto the substrate; and a protective layer provided onto the reflective layer, wherein the protective layer contains silicon in an amount of 10% by mass to 60% by mass in terms of SiO2 and an organic substance, and has 1.5 to 3.2 oxygen atoms on average that form a chemical bond with silicon.Type: ApplicationFiled: March 19, 2013Publication date: April 23, 2015Inventors: Kazumichi Sashi, Takahiko Oshige, Shin Ishikawa, Yoshihito Sakamoto, Takahiro Kubota
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Publication number: 20140209091Abstract: A solar light reflecting plate used for a light condensing and heat collecting device which includes a solar light reflecting plate that reflects and condenses solar light and a heat collecting tube that receives the solar light condensed by the solar light reflecting plate and is heated by the condensed solar light, wherein the solar light reflecting plate includes at least a rolled substrate, a surface roughness of a solar light reflecting surface that is an outermost surface and that reflects solar light is 0.02 ?m to 1.0 ?m in terms of arithmetic mean roughness Ra, and the solar light reflecting plate is disposed so that an angle between a rolling direction of the substrate and a longitudinal direction of the heat collecting tube is 80° to 100°.Type: ApplicationFiled: August 9, 2012Publication date: July 31, 2014Applicant: JFE STEEL CORPORATIONInventors: Kazumichi Sashi, Takahiko Oshige, Naoki Nishiyama, Yoshihito Sakamoto
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Patent number: 7599052Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.Type: GrantFiled: August 13, 2008Date of Patent: October 6, 2009Assignee: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Publication number: 20090086209Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.Type: ApplicationFiled: August 13, 2008Publication date: April 2, 2009Applicant: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Patent number: 7423744Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.Type: GrantFiled: October 24, 2006Date of Patent: September 9, 2008Assignee: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Patent number: 7248366Abstract: The defect marking method comprises the steps of: installing a surface defect tester to detect surface flaw and a marker device to apply marking at defect position, in a continuous processing line of steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester; determining defect name, defect grade, defect length, and defect position in the width direction of the steel sheet, on the basis of thus detected flaw information, further identifying the defect in terms of harmful defect, injudgicable defect, and harmless defect; applying tracking of the defect position for each of the harmful defect and the injudgicable defect; and applying marking to the defect position. The defect marking device comprises a defect inspection means having plurality of light-receiving parts and a signal processing section, and a marking means.Type: GrantFiled: September 17, 2001Date of Patent: July 24, 2007Assignee: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Publication number: 20070052964Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.Type: ApplicationFiled: October 24, 2006Publication date: March 8, 2007Applicant: NKK CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Publication number: 20020154308Abstract: The defect marking method comprises the steps of: installing a surface defect tester to detect surface flaw and a marker device to apply marking at defect position, in a continuous processing line of steel sheet; detecting the surface flaw on the steel sheet using the surface defect tester; determining defect name, defect grade, defect length, and defect position in the width direction of the steel sheet, on the basis of thus detected flaw information, further identifying the defect in terms of harmful defect, injudgicable defect, and harmless defect; applying tracking of the defect position for each of the harmful defect and the injudgicable defect; and applying marking to the defect position. The defect marking device comprises a defect inspection means having plurality of light-receiving parts and a signal processing section, and a marking means.Type: ApplicationFiled: September 17, 2001Publication date: October 24, 2002Applicant: NKK Corporation, a Japanese CorporationInventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
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Patent number: 5835220Abstract: A method for detecting a surface flaw which includes the steps of (i) irradiating polarized light to a surface of a sample to be inspected and determining ellipso-parameters (.PSI., .DELTA.) of reflected light from the surface of the sample; (ii) irradiating light to a same position as irradiated by the polarized light and determining the intensity (I) of reflected light from the surface of the sample; and (iii) determining a type and grade of a flaw on the surface of the sample based on the ellipso-parameters (.PSI.,.DELTA.) and the reflected light intensity (I). A surface flaw detecting apparatus includes (i) a first measuring device for irradiating polarized light to a surface to be inspected and measuring ellipso-parameters (.PSI.,.DELTA.Type: GrantFiled: October 27, 1995Date of Patent: November 10, 1998Assignee: NKK CorporationInventors: Akira Kazama, Takahiko Oshige, Tsutomu Kawamura, Yuji Matoba
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Patent number: 5438415Abstract: An ellipsometer has a nonpolarization beam splitter (18) for dividing reflected light (17) from an object to be measured (16) into portions traveling along first and second optical paths (18a, 18b), an analyzer (19) for passing the polarized light component in a reference direction of the reflected light portion traveling along the first optical path, and a polarization beam splitter (20) for dividing the reflected light portion traveling along the second optical path into two polarized light components in different directions with respect to the reference direction. The light beams passing through the analyzer (19) and polarization beam splitter (20) are sensed by first, second and third photodetectors (21a, 21b, 21c), respectively. In a coating thickness control method, first and second ellipsometers (35a, 35b) are placed before and after a coating apparatus (36) provided along the transport path of a belt-like plate to be coated (31). A first ellipsoparameter (.DELTA.1,.psi.Type: GrantFiled: September 22, 1992Date of Patent: August 1, 1995Assignee: NKK CorporationInventors: Akira Kazama, Takahiko Oshige, Yoshiro Yamada, Takeo Yamada, Takeshi Yamazaki, Takamitsu Takayama, Shuichiro Nomura
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Patent number: 5335066Abstract: Movable optical parts included in an ellipsometer are omitted to increase the measurement speed and maintain constant, high measurement precision in film thickness measurement processing. A beam is radiated from a light source section onto a measurement target. A reflected beam having an elliptically polarized beam reflected by the measurement target is divided into four light components polarized in different directions. The optical intensities of the respective polarized light components are detected. Of the four detected optical intensities, one having the minimum value is omitted, and ellipsometric parameters .psi. and .DELTA. are calculated by using the remaining three optical intensities having the largest values. The ellipsometer comprises only stationary optical parts without using any movable optical parts. The polarization directions of the respective polarized light components, from which four optical intensities are obtained, are set at angles of 90.degree., 0.degree., +45.degree., and -45.degree.Type: GrantFiled: October 7, 1993Date of Patent: August 2, 1994Assignee: NKK CorporationInventors: Takeo Yamada, Akira Kazama, Takahiko Oshige
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Patent number: 5311285Abstract: Movable optical parts included in an ellipsometer are removed to increase the measurement speed, and a specific quadrant to which a phase difference .DELTA. as an ellipsometric parameter belongs is determined by one measuring operation. A beam is radiated from a light source section onto a measurement target, and the reflected beam having an elliptically polarized beam, which is reflected by the target, is divided into four different polarized light components. The optical intensities of the respective light components are then detected. Ellipsometric parameters .psi. and .DELTA. are calculated on the basis of the detected four optical intensities. In addition, the above-mentioned four different polarized light components are obtained by using a wave plate. Furthermore, the polarization directions of the four polarized light components whose optical intensities are obtained are respectively set at angles -45.degree., +45.degree., 90.degree., and 0.degree. with respect to a reference direction.Type: GrantFiled: December 31, 1991Date of Patent: May 10, 1994Assignee: NKK CorporationInventors: Takahiko Oshige, Takeo Yamada, Akira Kazama