Patents by Inventor Shota Miyazaki
Shota Miyazaki 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: 11952749Abstract: A control device for a power machine includes a target circuit pressure specifying unit configured to specify a target circuit pressure of the hydrostatic continuously variable transmission, a measurement value acquisition unit configured to acquire an actual circuit pressure of the hydrostatic continuously variable transmission, a brake torque determination unit configured to determine a brake torque based on the target circuit pressure and the actual circuit pressure, and a pump control unit configured to control the hydraulic pump based on the brake torque. The brake torque is a torque consumed by the hydraulic pump.Type: GrantFiled: November 7, 2019Date of Patent: April 9, 2024Assignee: KOMATSU LTD.Inventors: Kenichi Yamada, Shogo Miyazaki, Akira Takeno, Shota Yamawaki
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Patent number: 11918286Abstract: An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.Type: GrantFiled: September 11, 2018Date of Patent: March 5, 2024Assignee: NIKON CORPORATIONInventors: Hideki Obara, Ken Tomioka, Shota Miyazaki
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Patent number: 11837915Abstract: The R-T-B-based magnet contains one or more kinds of rare earth elements (R), a transition metal element (T) including iron or iron and Co as an essential element, B, an element M that is Ga or Ga and Al, and C. When ratios of the number of atoms of R, T, B, M, and C are set as a, b, c, d, and e, respectively, relationships of 14%?a?20%, 70%?b?82%, 4%?c?7%, 0.009?d/b?0.035, and 0.025?e/b?0.055 are satisfied. The R-T-B-based magnet includes main phase crystal grains having an R2T14B-type tetragonal structure, and a grain boundary phase including an R-T-M-C phase. When ratios of R, T, M, and C in the main phase crystal grains are set as RMP, TMP, MMP, and CMP, and ratios of R, T, M, and C in the R-T-M-C phase are set as RRC, TRC, MRC, and CRC, relationships of RRC>RMP, TRC<TMP, MRC>MMP, and CRC>CMP are satisfied, and a relationship of 0.07?MRC/TRC?0.65 is satisfied.Type: GrantFiled: May 17, 2019Date of Patent: December 5, 2023Assignee: TDK CORPORATIONInventors: Tomohiro Kajita, Shota Miyazaki, Keiji Takeda
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Patent number: 11798717Abstract: An R-T-B-based rare earth permanent magnet in which the composition formula is represented by (R11-x-ySmxR2y)aTbBcMd, wherein: R1 is one or more rare earth elements not including Sm and Y; R2 is one or more rare earth elements from among Y, Ce, and La; T is Fe, etc.; M is Ga, etc.; x and y are in the region indicated in FIG. 1; the relationships 0.16?a/b?0.28, 0.050?c/b?0.075, and 0.005?d/b?0.028 are satisfied; the R-T-B-based rare earth permanent magnet includes a grain boundary phase and a main phase comprising an R2T14B compound; the average crystal grain diameter of the main-phase crystal grains is D50?4.00 ?m; the granularity distribution is (D90?D10)/D50?1.60; and the coverage of the grain boundary phase is at least 70.0%.Type: GrantFiled: January 29, 2019Date of Patent: October 24, 2023Assignee: TDK CORPORATIONInventors: Keiji Takeda, Shota Miyazaki
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Patent number: 11120931Abstract: An object of the present invention is to provide an R-T-B based permanent magnet having a low coercive force and a low magnetizing field, and having a high residual magnetic flux density and a high minor curve flatness even in the low magnetizing field. Provided is an R-T-B based permanent magnet including a main phase crystal grain including a compound having an R2T14B type tetragonal structure and a grain boundary phase existing between the main phase crystal grains, in which R is at least one rare earth element including scandium and yttrium, T is at least one transition metal element including iron, or at least two transition metal elements including iron and cobalt, an average diameter D50 of the main phase crystal grain is 1.00 ?m or less, and a content of carbon included in the R-T-B based permanent magnet is 3,000 ppm or more.Type: GrantFiled: March 29, 2018Date of Patent: September 14, 2021Assignee: TDK CORPORATIONInventors: Shota Miyazaki, Keiji Takeda
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Publication number: 20210242727Abstract: The R-T-B-based magnet contains one or more kinds of rare earth elements (R), a transition metal element (T) including iron or iron and Co as an essential element, B, an element M that is Ga or Ga and Al, and C. When ratios of the number of atoms of R, T, B, M, and C are set as a, b, c, d, and e, respectively, relationships of 14%?a?20%, 70%?b?82%, 4%?c?7%, 0.009?d/b?0.035, and 0.025?e/b?0.055 are satisfied. The R-T-B-based magnet includes main phase crystal grains having an R2T14B-type tetragonal structure, and a grain boundary phase including an R-T-M-C phase. When ratios of R, T, M, and C in the main phase crystal grains are set as RMP, TMP, MMP, and CMP, and ratios of R, T, M, and C in the R-T-M-C phase are set as RRC, TRC, MRC, and CRC, relationships of RRC>RMP, TRC<TMP, MRC>MMP, and CRC>CMP are satisfied, and a relationship of 0.07?MRC/TRC?0.65 is satisfied.Type: ApplicationFiled: May 17, 2019Publication date: August 5, 2021Applicant: TDK CORPORATIONInventors: Tomohiro KAJITA, Shota MIYAZAKI, Keiji TAKEDA
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Publication number: 20210196114Abstract: An ophthalmic device including a vision field testing section including a target presentation section and a vision field test optical system and configured to perform a vision field test on an examination eye, a measuring section including a measurement optical system to perform optical coherence tomography measurements on the examination eye, and a measurement unit configured to generate a tomographic image of the examination eye, an optical path combining section provided between the examination eye and the target presentation section and configured to combine a first optical path of the vision field test optical system and a second optical path of the measurement optical system, a first lens provided between the optical path combining section and the target presentation section and configured to perform diopter adjustment, a second lens provided between the optical path combining section and a position of the examination eye or the measurement unit, and employed in focus adjustment, a first driving sectionType: ApplicationFiled: December 22, 2020Publication date: July 1, 2021Applicant: NIKON CORPORATIONInventors: Shota MIYAZAKI, Ken TOMIOKA
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Publication number: 20210121059Abstract: An ophthalmic instrument including a light source, an optical system to guide light from the light source onto a right eye retina of a subject and/or onto a left eye retina of the subject, and a control section to control the optical system so as to perform a visual field test on the right eye retina and/or the left eye retina by the light being shone onto the right-eye retina and/or the left-eye retina.Type: ApplicationFiled: September 11, 2018Publication date: April 29, 2021Applicant: NIKON CORPORATIONInventors: Shota MIYAZAKI, Ken TOMIOKA, Hideki OBARA
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Publication number: 20210043343Abstract: An R-T-B-based rare earth permanent magnet in which the composition formula is represented by (R11-x-ySmXR2y)aTbBcMd, wherein: R1 is one or more rare earth elements not including Sm and Y; R2 is one or more rare earth elements from among Y, Ce, and La; T is Fe, etc.; M is Ga, etc.; x and y are in the region indicated in FIG. 1; the relationships 0.16?a/b?0.28, 0.050?c/b?0.075, and 0.005?d/b?0.028 are satisfied; the R-T-B-based rare earth permanent magnet includes a grain boundary phase and a main phase comprising an R2T14B compound; the average crystal grain diameter of the main-phase crystal grains is D50?4.00 ?m; the granularity distribution is (D90?D10)/D50?1.60; and the coverage of the grain boundary phase is at least 70.0%.Type: ApplicationFiled: January 29, 2019Publication date: February 11, 2021Applicant: TDK CORPORATIONInventors: Keiji TAKEDA, Shota MIYAZAKI
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Publication number: 20200352432Abstract: An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.Type: ApplicationFiled: September 11, 2018Publication date: November 12, 2020Applicant: NIKON CORPORATIONInventors: Hideki OBARA, Ken TOMIOKA, Shota MIYAZAKI
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Patent number: 10784029Abstract: An object of the present invention is to provide an R-T-B based permanent magnet having a low coercive force and a low magnetizing field, and having a high residual magnetic flux density and a high minor curve flatness even in the low magnetizing field. Provided is an R-T-B based permanent magnet including a main phase including a compound having an R2T14B type tetragonal structure and a grain boundary phase existing between the main phases, in which R is at least one rare earth element including scandium and yttrium, T is at least one transition metal element including iron, or at least two transition metal elements including iron and cobalt, the grain boundary includes an R-T-B—C based compound having a higher R concentration, B concentration and C concentration than that of the main phase and having a lower T concentration than that of the main phase.Type: GrantFiled: March 29, 2018Date of Patent: September 22, 2020Assignee: TDK CORPORATIONInventors: Keiji Takeda, Shota Miyazaki
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Publication number: 20200253468Abstract: Provided are an ophthalmic instrument, an image generation device, a program, and an ophthalmic system capable of allowing a patient to directly experience and confirm how vision will actually appear following surgery. The ophthalmic instrument includes a light source, an optical system that guides light emitted from the light source onto a retina of a subject eye, a communication section that receives a simulation image generated based on optometry information for the subject eye and intraocular lens information relating to an intraocular lens prescribable for the subject eye, the simulation image corresponding to how vision would appear in a case in which the intraocular lens is prescribed for the subject eye, and a control section that controls the light source and the optical system such that the simulation image received by the communication section is projected onto the retina.Type: ApplicationFiled: August 24, 2018Publication date: August 13, 2020Applicant: NIKON CORPORATIONInventors: Ken TOMIOKA, Shota MIYAZAKI, Hideki OBARA
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Patent number: 10614937Abstract: An R-T-B based rare earth permanent magnet is expressed by formula: (R11-x(Y1-y-z Cey Laz)x)aTbBcMd in which, R1 is one or more kinds of rare earth element not including Y, Ce and La, “T” is one or more kinds of transition metal, and includes Fe or Fe and Co as an essential component, “M” is an element having Ga or Ga and one or more of Sn, Bi and Si, 0.4?x?0.7, 0.00?y+z?0.20, 0.16?a/b?0.28, 0.050?c/b?0.070, 0.005?d/b?0.028, 0.25?(a-2c)/(b-14c)?2.00 and 0.025?d/(b-14c)?0.500. The magnet has a structure having a main phase, having a compound having a R2T14B type tetragonal structure, and a grain boundary phase, on an arbitrary cross sectional area, an area ratio of R-T-M, T-rich and R-rich phases, with respect to a total grain boundary phase area is 10.0% or more, 60.0% or less and 70.0% or less, respectively, and the coating rate of the grain boundary phase is 70.0% or more.Type: GrantFiled: July 13, 2017Date of Patent: April 7, 2020Assignee: TDK CORPORATIONInventors: Shota Miyazaki, Keiji Takeda
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Patent number: 10566117Abstract: An R-T-B based rare earth permanent magnet is expressed by a compositional formula: (R11?x(Y1?y?z Cey Laz)x)aTbBcMd in which R1 is one or more kinds of rare earth element not including Y, Ce and La, “T” is one or more kinds of transition metal, and includes Fe or Fe and Co as an essential component, “M” is an element having Ga or Ga and one or more kinds selected from Sn, Bi and Si, and 0.4?x?0.7, 0.00?y+z?0.20, 0.16?a/b?0.28, 0.050?c/b?0.075 and 0.005?d/b?0.028. The magnet includes a main phase, including a compound having a R2T14B type tetragonal structure, and a grain boundary phase. D10, D50, D90 of crystal grain diameter according to the main phase crystal grains satisfies the following formula: D50?4.00 ?m and (D90?D10)/D50?1.60. A coating rate of the grain boundary is 70.0% or more.Type: GrantFiled: July 13, 2017Date of Patent: February 18, 2020Assignee: TDK CORPORATIONInventors: Keiji Takeda, Shota Miyazaki
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Publication number: 20180294080Abstract: An object of the present invention is to provide an R-T-B based permanent magnet having a low coercive force and a low magnetizing field, and having a high residual magnetic flux density and a high minor curve flatness even in the low magnetizing field. Provided is an R-T-B based permanent magnet including a main phase crystal grain including a compound having an R2T14B type tetragonal structure and a grain boundary phase existing between the main phase crystal grains, in which R is at least one rare earth element including scandium and yttrium, T is at least one transition metal element including iron, or at least two transition metal elements including iron and cobalt, an average diameter D50 of the main phase crystal grain is 1.00 ?m or less, and a content of carbon included in the R-T-B based permanent magnet is 3,000 ppm or more.Type: ApplicationFiled: March 29, 2018Publication date: October 11, 2018Applicant: TDK CORPORATIONInventors: Shota MIYAZAKI, Keiji TAKEDA
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Publication number: 20180294079Abstract: An object of the present invention is to provide an R-T-B based permanent magnet having a low coercive force and a low magnetizing field, and having a high residual magnetic flux density and a high minor curve flatness even in the low magnetizing field. Provided is an R-T-B based permanent magnet including a main phase including a compound having an R2T14B type tetragonal structure and a grain boundary phase existing between the main phases, in which R is at least one rare earth element including scandium and yttrium, T is at least one transition metal element including iron, or at least two transition metal elements including iron and cobalt, the grain boundary includes an R-T-B—C based compound having a higher R concentration, B concentration and C concentration than that of the main phase and having a lower T concentration than that of the main phase.Type: ApplicationFiled: March 29, 2018Publication date: October 11, 2018Applicant: TDK CORPORATIONInventors: Keiji TAKEDA, Shota MIYAZAKI
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Publication number: 20180040400Abstract: An R-T-B based rare earth permanent magnet is expressed by a compositional formula: (R11-x(Y1-y-z Cey Laz)x)aTbBcMd in which R1 is one or more kinds of rare earth element not including Y, Ce and La, “T” is one or more kinds of transition metal, and includes Fe or Fe and Co as an essential component, “M” is an element having Ga or Ga and one or more kinds selected from Sn, Bi and Si, and 0.4?x?0.7, 0.00?y+z?0.20, 0.16?a/b?0.28, 0.050?c/b?0.075 and 0.005?d/b?0.028. The magnet includes a main phase, including a compound having a R2T14B type tetragonal structure, and a grain boundary phase. D10, D50, D90 of crystal grain diameter according to the main phase crystal grains satisfies the following formula: D50?4.00 ?m and (D90?D10)/D50?1.60. A coating rate of the grain boundary is 70.0% or more.Type: ApplicationFiled: July 13, 2017Publication date: February 8, 2018Applicant: TDK CORPORATIONInventors: Keiji TAKEDA, Shota MIYAZAKI
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Publication number: 20180040399Abstract: An R-T-B based rare earth permanent magnet is expressed by formula: (R11-x(Y1-y-z Cey Laz)x)aTbBcMd in which, R1 is one or more kinds of rare earth element not including Y, Ce and La. “T” is one or more kinds of transition metal, and includes Fe or Fe and Co as an essential component, “M” is an element having Ga or Ga and one or more of Sn, Bi and Si, 0.4?x?0.7, 0.00?y+z?0.20, 0.16?a/b?0.28, 0.050?c/b?0.070, 0.005?d/b?0.028, 0.25?(a-2c)/(b-14c)?2.00 and 0.025?d/(b-14c)?0.500. The magnet has a structure having a main phase, having a compound having a R2T14B type tetragonal structure, and a grain boundary phase, on an arbitrary cross sectional area, an area ratio of R-T-M, T-rich and R-rich phases, with respect to a total grain boundary phase area is 10.0% or more, 60.0% or less and 70.0% or less, respectively, and the coating rate of the grain boundary phase is 70.0% or more.Type: ApplicationFiled: July 13, 2017Publication date: February 8, 2018Applicant: TDK CORPORATIONInventors: Shota MIYAZAKI, Keiji TAKEDA
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Patent number: 8935941Abstract: To use a monolithic silica body in chromatography with a HPLC column or a GC column and to simplify the use thereof as a separation medium, it is intended to provide a method of cladding a main body of a monolithic adsorbent or separating agent with glass so as to protect the outer surface, and to provide a separation medium prepared by the method. To this end, a monolithic silica body alone is formed by molding, and the molding is coated with a glass body; and then the glass body and the monolithic silica body are fused and integrated at the melting temperature of the glass body at an appropriate pressure. The surface of the resulting monolithic silica body clad with glass is strongly protected by the glass, and the homogeneity of the interior of the monolithic silica body is maintained, and thus uniform flow of a sample solution ensures analytical accuracy.Type: GrantFiled: February 1, 2008Date of Patent: January 20, 2015Assignee: GL Sciences IncorporatedInventors: Shota Miyazaki, Hiroyuki Terashima, Masahiko Nyudo, Masayoshi Ohira, Kei Morisato, Masahiro Furuno
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Publication number: 20110000279Abstract: To use a monolithic silica body in chromatography with a HPLC column or a GC column and to simplify the use thereof as a separation medium, it is intended to provide a method of cladding a main body of a monolithic adsorbent or separating agent with glass so as to protect the outer surface, and to provide a separation medium prepared by the method. To this end, a monolithic silica body alone is formed by molding, and the molding is coated with a glass body; and then the glass body and the monolithic silica body are fused and integrated at the melting temperature of the glass body at an appropriate pressure. The surface of the resulting monolithic silica body clad with glass is strongly protected by the glass, and the homogeneity of the interior of the monolithic silica body is maintained, and thus uniform flow of a sample solution ensures analytical accuracy.Type: ApplicationFiled: February 1, 2008Publication date: January 6, 2011Applicant: GL SCIENCES INCORPORATEDInventors: Shota Miyazaki, Hiroyuki Terashima, Masahiko Nyudo, Masayoshi Ohira, Kei Morisato, Masahiro Furuno