Patents by Inventor Masao Goto
Masao Goto 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: 12135207Abstract: This device includes: an input unit for receiving a shape of an inspection target surface of a wedge exposed from a slot with no force applied to the wedge; a relation storage unit which acquires and stores, as a deformation reaction force relation, a relation between a reaction force of a spring at the inspection target surface of the wedge and deformation distribution from the shape of the inspection target surface of the wedge inputted to the input unit; a measurement unit for measuring measurement deformation distribution of the inspection target surface of the wedge; an estimation unit for estimating an estimation reaction force from the measurement deformation distribution and the deformation reaction force relation; and a judgement unit for judging proper/fault about looseness of the wedge from the estimation reaction force.Type: GrantFiled: December 19, 2019Date of Patent: November 5, 2024Assignee: MITSUBISHI GENERATOR CO., LTD.Inventors: Norihiko Hana, Masao Akiyoshi, Daichi Goto, Kazuaki Ogura
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Publication number: 20240321975Abstract: A mesa structure including a collector layer, a base layer, and an emitter layer laminated on a substrate is formed. An emitter electrode electrically connected to the emitter layer is disposed on the mesa structure. Moreover, a base electrode electrically connected to the base layer is disposed on the mesa structure. A collector electrode is disposed in such a manner as to surround the mesa structure in plan view, and the collector electrode is electrically connected to the collector layer. The emitter electrode includes a first part and a second part. In plan view, the base electrode surrounds the first part of the emitter electrode, and the second part of the emitter electrode surrounds the base electrode.Type: ApplicationFiled: June 5, 2024Publication date: September 26, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Kenji SASAKI, Koji INOUE, Shinnosuke TAKAHASHI, Satoshi GOTO, Masao KONDO
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Publication number: 20240309480Abstract: Provided herein is a duplex stainless steel pipe that is high in strength and has excellent abrasion resistance and indentation resistance on inner and outer surfaces of the steel pipe. A method for manufacturing such a stainless steel pipe is also provided. A duplex stainless steel pipe of the present invention has a composition that contains, in mass %, C: 0.005 to 0.150%, Si: 1.0% or less, Mn: 10.0% or less, Cr: 11.5 to 35.0%, Ni: 0.5 to 15.0%, Mo: 0.5 to 6.0%, N: less than 0.400%, and the balance being Fe and incidental impurities, and has a microstructure with a ferritic phase and an austenitic phase, the duplex stainless steel pipe having an axial tensile yield strength of 689 MPa or more, and having an outer surface and an inner surface each having an oxide layer having an average thickness of 1.0 ?m or more.Type: ApplicationFiled: February 9, 2022Publication date: September 19, 2024Applicant: JFE Steel CorporationInventors: Shunsuke Sasaki, Seigo Goto, Masao Yuga, Tatsuro Katsumura, Hideo Kijima
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Publication number: 20240313724Abstract: A first differential amplifier circuit is in or on a substrate and includes a pair of differential input nodes to which differential signals are input and a pair of differential output nodes from which differential signals are output. Ends of a secondary coil of a first transformer are connected to the pair of differential input nodes of the first differential amplifier circuit, and an intermediate point of the secondary coil is AC grounded. Ends of a primary coil of a second transformer are connected to the pair of differential output nodes of the first differential amplifier circuit, and an intermediate point of the primary coil of the second transformer is AC grounded. A differential wire pair connects the ends of the secondary coil of the first transformer to the pair of differential input nodes of the first differential amplifier circuit.Type: ApplicationFiled: May 22, 2024Publication date: September 19, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Masao KONDO, Takayuki TSUTSUI, Satoshi GOTO
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Patent number: 8118953Abstract: A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 ?m, prior austenite has a grain diameter of 30 ?m or less, and the ratio by volume of the residual austenite is less than 25%.Type: GrantFiled: January 27, 2010Date of Patent: February 21, 2012Assignees: JFE Steel Corporation, JTEKT CorporationInventors: Takashi Iwamoto, Kunikazu Tomita, Hideto Kimura, Takaaki Toyooka, Hisato Nishisaka, Masao Goto, Hisashi Harada
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Patent number: 7763124Abstract: Provided are a steel having excellent rolling contact fatigue life and the manufacturing method thereof. The steel consists essentially of 0.7 to 1.1% C, 0.2 to 2.0% Si, 0.4 to 2.5% Mn, 1.6 to 4.0% Cr, 0.1% or more and less than 0.5% Mo, 0.010 to 0.050% Al, bymass, and balance of Fe and inevitable impurities, is treated by quenching and tempering, has residual cementite grain sizes ranging from 0.05 to 1.5 ?m, and has prior-austenite grain sizes of 30 ?m or smaller. When the steel is used to bearing steel, the bearing life extends even under service in more severe environments.Type: GrantFiled: April 14, 2004Date of Patent: July 27, 2010Assignees: JFE Steel Corporation, Koyo Seiko Co., Ltd.Inventors: Takashi Iwamoto, Akihiro Matsuzaki, Kazuhiko Ohno, Masao Goto, Hisashi Harada, Hisato Nishisaka
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Publication number: 20100139819Abstract: A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 ?m, prior austenite has a grain diameter of 30 ?m or less, and the ratio by volume of the residual austenite is less than 25%.Type: ApplicationFiled: January 27, 2010Publication date: June 10, 2010Applicants: JFE STEEL CORPORATION, JTEKT CORPORATIONInventors: Takashi Iwamoto, Kunikazu Tomita, Hideto Kimura, Takaaki Toyooka, Hisato Nishisaka, Masao Goto, Hisashi Harada
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Patent number: 7436906Abstract: In a symbol timing detector, a correlator calculates a correlation value for a received radio packet signal. A peak detector compares the correlation value with a threshold value to be used, and sends, upon a correlation value detected larger than the threshold value, a detection signal to a symbol synchronous processor. A threshold value to be used for the peak detector is set different, after the first peak detected, between a predetermined estimation period and a period other than the former. A first peak is detected with a threshold value under a severer condition in the period other than the estimation period, and the next peak detection timing is estimated upon the first peak detected. A synchronization detecting position is determined, when no correlation peak is detected at the estimated timing, to output a sync detection signal.Type: GrantFiled: March 31, 2005Date of Patent: October 14, 2008Assignee: Oki Electric Industry Co., Ltd.Inventor: Masao Goto
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Patent number: 7413704Abstract: A case hardening bearing steel having an excellent rolling contact fatigue life in intermediate temperature, in addition, excellent toughness at room temperature is provided. Specific means for solving the problems are as follows. The composition contains, by mass percent, C of 0.15 to 0.30 mass percent, Si of 0.5 to 2.0 mass percent, Mn of 0.3 to 2.0 mass percent, Cr of 1.3 to 2.5 mass percent, Mo of 0.3 to 1.0 mass percent, and O of not more than 0.0012 mass percent in a range where (Si+Mo)?1.0 mass percent is satisfied, and contains iron and inevitable impurities as remnant; the maximum size of oxide nonmetallic inclusion is not more than 12.5 ?m when examined area is 320 mm2; number of the oxide nonmetallic inclusion having a diameter of equivalent circle of 3 ?m or more is not more than 250 when the examined area is 320 mm2; in addition, C density of an outer layer is adjusted to be in a range from 0.7 to 1.2 mass percent by carburization.Type: GrantFiled: April 9, 2003Date of Patent: August 19, 2008Assignees: JFE Steel Corporation, Koyo Seiko Co., Ltd.Inventors: Akihiro Matsuzaki, Takashi Iwamoto, Masao Goto, Katsuhiko Kizawa
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Publication number: 20070199632Abstract: A steel part having a long rolling contact fatigue life and capable of further increasing the life of a bearing under severer using condition than usual conditions. The steel part includes steel having a composition containing 0.7% by mass to 1.1% by mass of C, 0.5% by mass to 2.0% by mass of Si, 0.4% by mass to 2.5% by mass of Mn, 1.6% by mass to 5.0% by mass of Cr, 0.1% by mass to less than 0.5% by mass of Mo, 0.010% by mass to 0.050% by mass of Al, less than 0.0015% by mass of Sb as an impurity, and the balance composed of Fe and inevitable impurities, the steel being hardened and tempered. In the steel structure of a portion from the surface to a depth of 5 mm, residual cementite has a grain diameter of 0.05 to 1.5 ?m, prior austenite has a grain diameter of 30 ?m or less, and the ratio by volume of the residual austenite is less than 25%.Type: ApplicationFiled: February 15, 2007Publication date: August 30, 2007Applicants: JFE Steel Corporation,a corporation of Japan, JTEKT Corporation, a corporation of JapanInventors: Takashi Iwamoto, Kunikazu Tomita, Hideto Kimura, Takaaki Toyooka, Hisato Nishisaka, Masao Goto, Hisashi Harada
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Patent number: 7207933Abstract: A roller member comprising high carbon chromium bearing steel having a carburization treatment. The bearing steel comprising a surface portion defined as a range between a surface of a rolling face of the roller member to a depth where a maximum shearing stress acts thereon, the surface portion containing carbon in a total amount comprising a range of 1.0 to 1.6 wt % and an amount of residual austenite comprising a range of 20 vol % to 35 vol % wherein a compression residual stress of the surface portion comprises a range of 150 to 1000 MPa, wherein a surface hardness of the surface portion comprises a range of 64 or higher in Rockwell C hardness, wherein an amount of carbide precipitate on the surface portion comprises a range of 10% to 25% in an area rate and each carbide particle size comprises a range of 3 ?m or less.Type: GrantFiled: July 29, 2003Date of Patent: April 24, 2007Assignee: Koyo Seiko Co., Ltd.Inventors: Masao Goto, Katsuhiko Kizawa
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Patent number: 7205834Abstract: In a power amplifier driven by a pulse width modulation (PWM) signal, a first pair of drive pulses opposite in level to each other is formed from a first pulse width modulation signal whose quantization level corresponds to its pulse width and supplied to a first push-pull circuit (15). A second pair of drive pulses opposite in level to each other is formed from a second pulse width modulation signal whose two's complement of quantization level corresponds to its pulse width, and supplied to a second push-pull circuit (16). A speaker (19) is connected between the first and second push-pull circuits (15 and 16). A deviation between potentials at the output terminals of the first and second push-pull circuits (15 and 16), respectively, is detected. When a deviation is detected, the push-pull circuits are substantially stopped from operating.Type: GrantFiled: June 6, 2003Date of Patent: April 17, 2007Assignee: Sony CorporationInventor: Masao Goto
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Patent number: 7104697Abstract: In a heat treatment wherein a blank (intermediate material) formed with a lubrication hole is heated and quenched, the quenching of the blank is terminated at the point of time that a temperature at a portion corresponding to a depth from a raceway surface (surface of a bearing part) of an outer ring (the bearing part), to which depth the maximum shear stress affects, is lowered to an MS point.Type: GrantFiled: October 29, 2003Date of Patent: September 12, 2006Assignee: Koyo Seiko Co., Ltd.Inventors: Kazutoshi Toda, Masao Goto
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Patent number: 7056191Abstract: The moving trajectory that a robot hand 16 depicts when chamfering a glass sheet G is a trajectory A that a center of rotation 01 of the robot hand 16 vertically moves along a straight line Q connecting between the center of rotation 01 of the robot hand 16 and a rotation 02 of a grinding wheel 30.Type: GrantFiled: June 24, 2004Date of Patent: June 6, 2006Assignee: Asahi Glass Company, LimitedInventors: Hideo Takatsuji, Akihiko Aritomi, Masao Goto, Keiji Fujikawa, Tatsuya Yamasaki
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Publication number: 20060081314Abstract: Provided are a steel having excellent rolling contact fatigue life and the manufacturing method thereof. The steel consists essentially of 0.7 to 1.1% C, 0.2 to 2.0% Si, 0.4 to 2.5% Mn, 1.6 to 4.0% Cr, 0.1% or more and less than 0.5% Mo, 0.010 to 0.050% Al, bymass, and balance of Fe and inevitable impurities, is treated by quenching and tempering, has residual cementite grain sizes ranging from 0.05 to 1.5 ?m, and has prior-austenite grain sizes of 30 ?m or smaller. When the steel is used to bearing steel, the bearing life extends even under service in more severe environments.Type: ApplicationFiled: April 14, 2004Publication date: April 20, 2006Applicants: JFE Steel Corporation, Koyo Seiko Co., Ltd.Inventors: Takashi Iwamoto, Akihiro Matsuzaki, Kazuhiko Ohno, Masao Goto, Hisashi Harada, Hisato Nishisaka
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Patent number: 6979766Abstract: A distortion correcting device is accommodated at a concave portion of the neck of a stringed instrument, and includes a bar including a bottom plate portion and a pair of opposing side plate portions erected at both sides of the bottom plate portion; and an adjusting rod whose one end portion is secured to one end portion of the bar and whose other end portion engages with an adjusting nut which is rotatably supported by the other end portion of the bar, and in which the distance between the one end portion of the adjusting rod and the adjusting nut can be changed by turning the adjusting nut. A first support member and a second support member are secured to the side plate portions at both end portions of the bar, and one end portion of the adjusting rod is supported such that movement in an axial direction is blocked by the first support member, and the adjusting nut is rotatably supported by the second support member.Type: GrantFiled: May 14, 2001Date of Patent: December 27, 2005Assignee: Gotoh Gut Co., Ltd.Inventor: Masao Goto
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Publication number: 20050231276Abstract: In a power amplifier driven by a pulse width modulation (PWM) signal, a first pair of drive pulses opposite in level to each other is formed from a first pulse width modulation signal whose quantization level corresponds to its pulse width and supplied to a first push-pull circuit (15). A second pair of drive pulses opposite in level to each other is formed from a second pulse width modulation signal whose two's complement of quantization level corresponds to its pulse width, and supplied to a second push-pull circuit (16). A speaker (19) is connected between the first and second push-pull circuits (15 and 16). A deviation between potentials at the output terminals of the first and second push-pull circuits (15 and 16), respectively, is detected. When a deviation is detected, the push-pull circuits are substantially stopped from operating.Type: ApplicationFiled: June 6, 2003Publication date: October 20, 2005Inventor: Masao Goto
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Publication number: 20050226350Abstract: In a symbol timing detector, a correlator calculates a correlation value for a received radio packet signal. A peak detector compares the correlation value with a threshold value to be used, and sends, upon a correlation value detected larger than the threshold value, a detection signal to a symbol synchronous processor. A threshold value to be used for the peak detector is set different, after the first peak detected, between a predetermined estimation period and a period other than the former. A first peak is detected with a threshold value under a severer condition in the period other than the estimation period, and the next peak detection timing is estimated upon the first peak detected. A synchronization detecting position is determined, when no correlation peak is detected at the estimated timing, to output a sync detection signal.Type: ApplicationFiled: March 31, 2005Publication date: October 13, 2005Applicant: Oki Electric Industry Co., Ltd.Inventor: Masao Goto
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Patent number: 6893609Abstract: A long-life bearing steel for general purpose use is provided at low cost with no use of specific secondary refining process. Specifically, a bearing material having a component composition in which C: 0.95 to 1.10 mass %, Si: 0.15 to 0.70 mass %, Mn: 1.15 mass % or less, Cr: 0.90 to 1.60 mass %, and P: 0.025 mass % or less are contained, S and O, that are elements forming nonmetallic inclusions, are contained at S: 0.025 mass % or less and O: 0.0012 mass % or less, and the rest is composed of Fe and incidental impurities, wherein the maximum diameter of the oxide-based nonmetallic inclusion is more than 10 ?m, but 15 ?m or less in an inspection area: 320 mm2, the number of oxide-based nonmetallic inclusions having an equivalent circle diameter of 3 ?m or more is 250 or less in the inspection area: 320 mm2, while in the material, AlN is contained at 0.Type: GrantFiled: January 24, 2002Date of Patent: May 17, 2005Assignee: JFE Steel CorporationInventors: Akihiro Matsuzaki, Takashi Iwamoto, Yoshio Yamazaki, Katsuhiko Kizawa, Masao Goto
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Publication number: 20050081962Abstract: A case hardening bearing steel having an excellent rolling contact fatigue life in intermediate temperature, in addition, excellent toughness at room temperature is provided. Specific means for solving the problems are as follows. The composition contains, by mass percent, C of 0.15 to 0.30 mass percent, Si of 0.5 to 2.0 mass percent, Mn of 0.3 to 2.0 mass percent, Cr of 1.3 to 2.5 mass percent, Mo of 0.3 to 1.0 mass percent, and O of not more than 0.0012 mass percent in a range where (Si+Mo)?1.0 mass percent is satisfied, and contains iron and inevitable impurities as remnant; the maximum size of oxide nonmetallic inclusion is not more than 12.5 ?m when examined area is 320 mm2; number of the oxide nonmetallic inclusion having a diameter of equivalent circle of 3 ?m or more is not more than 250 when the examined area is 320 mm2; in addition, C density of an outer layer is adjusted to be in a range from 0.7 to 1.2 mass percent by carburization.Type: ApplicationFiled: April 9, 2003Publication date: April 21, 2005Inventors: Akihiro Matsuzaki, Takashi Iwamoto, Masao Goto, Katsunhiko Kizawa