Patents by Inventor Yuji SHIGEYOSHI
Yuji SHIGEYOSHI 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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Publication number: 20230406719Abstract: A film-forming material of the present invention contains an oxyfluoride of yttrium represented by YOXFY (X and Y are numbers satisfying 0<X and X<Y) and YF3, wherein a ratio I2/I1 of a peak height I2 of the (020) plane of YF3 to a peak height I1 of the main peak of YOXFY as analyzed by XRD is from 0.005 to 100. It is preferable that a ratio I4/I1 of a peak height I4 of the main peak of Y2O3 to the peak height I1 of the main peak of YOXFY as analyzed by XRD is 0.01 or less.Type: ApplicationFiled: August 25, 2023Publication date: December 21, 2023Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Patent number: 11773493Abstract: A material for cold spraying contains a powder of a compound of a rare earth element with a specific surface area of 30 m2/g or more as determined by a BET single-point method. The powder preferably has a volume of pores with a pore size of 3 to 20 nm of 0.08 cm3/g or more as determined by a gas absorption method. The powder also preferably has a crystallite diameter of 25 nm or less. The powder also preferably has a repose angle of from 10 to 60°. In the L*a*b* color system, the powder also preferably has a value L of 85 or more, a value a of from ?0.7 to 0.7, and a value b of from ?1 to 2.5.Type: GrantFiled: October 18, 2019Date of Patent: October 3, 2023Inventors: Ryuichi Sato, Naoki Fukagawa, Kento Matsukura, Shuki Mikoda, Seiji Moriuchi, Yuji Shigeyoshi, Masahiro Fukumoto, Motohiro Yamada
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Publication number: 20220388858Abstract: A film-forming material of the present invention contains an oxyfluoride of yttrium represented by YOFY (X and Y are numbers satisfying 0<X and X<Y) and YF3, wherein a ratio I2/I1 of a peak height I2 of the (020) plane of YF3 to a peak height I1 of the main peak of YOXFY as analyzed by XRD is from 0.005 to 100. It is preferable that a ratio I4/I1 of a peak height I4 of the main peak of Y2O3 to the peak height I1 of the main peak of YOXFY as analyzed by XRD is 0.01 or less.Type: ApplicationFiled: July 1, 2022Publication date: December 8, 2022Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Patent number: 11371131Abstract: The present invention relates a coating powder comprising a rare earth oxyfluoride (Ln-O—F) and having: an average particle size (D50) of 0.1 to 10 ?m, a pore volume of pores having a diameter of 10 ?m or smaller of 0.1 to 0.5 cm3/g as measured by mercury intrusion porosimetry, and a ratio of the maximum peak intensity (S0) assigned to a rare earth oxide (LnxOy) in the 2? angle range of from 20° to 40° to the maximum peak intensity (S1) assigned to the rare earth oxyfluoride (Ln-O—F) in the same range, S0/S1, of 1.0 or smaller in powder X-ray diffractometry using Cu-K? rays or Cu-K?1 rays.Type: GrantFiled: May 22, 2020Date of Patent: June 28, 2022Assignee: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi Sato, Naoki Fukagawa, Yuji Shigeyoshi, Kento Matsukura
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Publication number: 20220002879Abstract: A material for cold spraying contains a powder of a compound of a rare earth element with a specific surface area of 30 m2/g or more as determined by a BET single-point method. The powder preferably has a volume of pores with a pore size of 3 to 20 nm of 0.08 cm3/g or more as determined by a gas absorption method. The powder also preferably has a crystallite diameter of 25 nm or less. The powder also preferably has a repose angle of from 10 to 60°. In the L*a*b* color system, the powder also preferably has a value L of 85 or more, a value a of from ?0.7 to 0.7, and a value b of from ?1 to 2.5.Type: ApplicationFiled: October 18, 2019Publication date: January 6, 2022Inventors: Ryuichi SATO, Naoki FUKAGAWA, Kento MATSUKURA, Shuki MIKODA, Seiji MORIUCHI, Yuji SHIGEYOSHI, Masahiro FUKUMOTO, Motohiro YAMADA
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Patent number: 10934174Abstract: A film-forming material of the present invention contains an oxyfluoride of yttrium represented by YOXFY (X and Y are numbers satisfying 0<X and X<Y) and YF3, wherein a ratio I2/I1 of a peak height I2 of the (020) plane of YF3 to a peak height I1 of the main peak of YOXFY as analyzed by XRD is from 0.005 to 100. It is preferable that a ratio I4/I1 of a peak height I4 of the main peak of Y2O3 to the peak height I1 of the main peak of YOXFY as analyzed by XRD is 0.01 or less.Type: GrantFiled: December 15, 2016Date of Patent: March 2, 2021Assignee: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi Sato, Naoki Fukagawa, Yuji Shigeyoshi, Kento Matsukura
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Publication number: 20210017036Abstract: A film-forming material of the present invention contains an oxyfluoride of yttrium represented by YOXFY (X and Y are numbers satisfying 0<X and X<Y) and YF3, wherein a ratio I2/I1 of a peak height I2 of the (020) plane of YF3 to a peak height I1 of the main peak of YOXFY as analyzed by XRD is from 0.005 to 100. It is preferable that a ratio I4/I1 of a peak height I4 of the main peak of Y2O3 to the peak height I1 of the main peak of YOXFY as analyzed by XRD is 0.01 or less.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Publication number: 20200283881Abstract: The present invention relates a coating powder comprising a rare earth oxyfluoride (Ln-O—F) and having: an average particle size (D50) of 0.1 to 10 ?m, a pore volume of pores having a diameter of 10 ?m or smaller of 0.1 to 0.5 cm3/g as measured by mercury intrusion porosimetry, and a ratio of the maximum peak intensity (S0) assigned to a rare earth oxide (LnxOy) in the 2? angle range of from 20° to 40° to the maximum peak intensity (S1) assigned to the rare earth oxyfluoride (Ln-O—F) in the same range, S0/S1, of 1.0 or smaller in powder X-ray diffractometry using Cu-K? rays or Cu-K?1 rays.Type: ApplicationFiled: May 22, 2020Publication date: September 10, 2020Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Patent number: 10173929Abstract: The present invention is a sintering material including a granule, the sintering material having an apparent tap density of 1.0 to 2.5 g/cm3, a 50% cumulative volume particle diameter (D50N) of 10 to 100 ?m as measured before ultrasonication by laser diffraction/scattering particle size distribution analysis, a 50% cumulative volume particle diameter (D50D) of 0.1 to 1.5 ?m as measured after ultrasonication at 300 W for 15 minutes by laser diffraction/scattering particle size distribution analysis, and an X-ray diffraction pattern in which the maximum peak observed in the 2? angle range of from 20° to 40° is assigned to a rare earth oxyfluoride of the form LnOF when analyzed by X-ray diffractometry using Cu—K? or Cu—K?1 rays.Type: GrantFiled: February 26, 2016Date of Patent: January 8, 2019Assignee: NIPPON YTTRIUM CO., LTD.Inventors: Naoki Fukagawa, Yuji Shigeyoshi
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Publication number: 20180362359Abstract: A film-forming material of the present invention contains an oxyfluoride of yttrium represented by YOXFY (X and Y are numbers satisfying 0 <X and X <Y) and YF3, wherein a ratio I2/I1 of a peak height I2 of the (020) plane of YF3 to a peak height Ii of the main peak of YOXFY as analyzed by XRD is from 0.005 to 100. It is preferable that a ratio I4/I1 of a peak height I4 of the main peak of Y2O3 to the peak height I1 of the main peak of YOXFY as analyzed by XRD is 0.01 or less.Type: ApplicationFiled: December 15, 2016Publication date: December 20, 2018Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Patent number: 9969652Abstract: A sintered body of the present invention contains yttrium oxyfluoride. The yttrium oxyfluoride is preferably YOF and/or Y5O4F7. The sintered body of the present invention preferably contains 50% by mass or more of yttrium oxyfluoride. The sintered body of the present invention has a relative density of preferably 70% or more and an open porosity of preferably 10% or less. Furthermore, the sintered body of the present invention has a three-point bending strength of preferably 10 MPa or more and 300 MPa or less.Type: GrantFiled: November 18, 2015Date of Patent: May 15, 2018Assignee: NIPPON YITRIUM CO., LTD.Inventors: Toyohiko Yano, Katsumi Yoshida, Toru Tsunoura, Yuji Shigeyoshi
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Publication number: 20180016193Abstract: The present invention is a sintering material including a granule, the sintering material having an apparent tap density of 1.0 to 2.5 g/cm3, a 50% cumulative volume particle diameter (D50N) of 10 to 100 ?m as measured before ultrasonication by laser diffraction/scattering particle size distribution analysis, a 50% cumulative volume particle diameter (D50D) of 0.1 to 1.5 ?m as measured after ultrasonication at 300 W for 15 minutes by laser diffraction/scattering particle size distribution analysis, and an X-ray diffraction pattern in which the maximum peak observed in the 20 angle range of from 20° to 40° is assigned to a rare earth oxyfluoride of the form LnOF when analyzed by X-ray diffractometry using Cu—K? or Cu—K?1 rays.Type: ApplicationFiled: February 26, 2016Publication date: January 18, 2018Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Naoki FUKAGAWA, Yuji SHIGEYOSHI
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Publication number: 20170342539Abstract: The present invention relates a coating powder comprising a rare earth oxyfluoride (Ln-O—F) and having: an average particle size (D50) of 0.1 to 10 ?m, a pore volume of pores having a diameter of 10 ?m or smaller of 0.1 to 0.5 cm3/g as measured by mercury intrusion porosimetry, and a ratio of the maximum peak intensity (S0) assigned to a rare earth oxide (LnxOy) in the 2? angle range of from 20° to 40° to the maximum peak intensity (S1) assigned to the rare earth oxyfluoride (Ln-O—F) in the same range, S0/S1, of 1.0 or smaller in powder X-ray diffractometry using Cu-K? rays or Cu-K?1 rays.Type: ApplicationFiled: February 2, 2016Publication date: November 30, 2017Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI, Kento MATSUKURA
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Publication number: 20170305796Abstract: A sintered body of the present invention contains yttrium oxyfluoride. The yttrium oxyfluoride is preferably YOF and/or Y5O4F7. The sintered body of the present invention preferably contains 50% by mass or more of yttrium oxyfluoride. The sintered body of the present invention has a relative density of preferably 70% or more and an open porosity of preferably 10% or less. Furthermore, the sintered body of the present invention has a three-point bending strength of preferably 10 MPa or more and 300 MPa or less.Type: ApplicationFiled: November 18, 2015Publication date: October 26, 2017Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Toyohiko YANO, Katsumi YOSHIDA, Toru TSUNOURA, Yuji SHIGEYOSHI
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Publication number: 20150307715Abstract: A slurry for thermal spraying including particles containing a rare earth oxyfluoride and a dispersing medium. The particles have an average particle size of 0.01 to 10 ?m. The particles may further contain a rare earth fluoride. When the particles are analyzed by X-ray diffractometry using CuK? or CuK?1 radiation, a ratio of the maximum peak intensity (S0) of a rare earth oxide observed in a range of 2? angles of from 20° to 40° to the maximum peak intensity (S1) of the rare earth oxyfluoride observed in the same range, S0/S1, is preferably 0.10 or less.Type: ApplicationFiled: May 13, 2014Publication date: October 29, 2015Applicant: NIPPON YTTRIUM CO., LTD.Inventors: Ryuichi SATO, Naoki FUKAGAWA, Yuji SHIGEYOSHI