Patents by Inventor Masamichi Ito
Masamichi Ito 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: 20200176952Abstract: A surface emitting laser includes: a semiconductor layer containing a nitride semiconductor, and including a first semiconductor layer, an active layer, and a second semiconductor layer that are stacked in this order, in which the semiconductor layer includes a light emitting region; and a first light reflecting layer and a second light reflecting layer that are opposed to each other with the semiconductor layer being disposed therebetween. The first semiconductor layer has a high dislocation portion disposed outside the light emitting region. The high dislocation portion has an average dislocation density higher than an average dislocation density of the light emitting region.Type: ApplicationFiled: April 17, 2018Publication date: June 4, 2020Inventors: HIROSHI NAKAJIMA, TATSUSHI HAMAGUCHI, JUGO MITOMO, SUSUMU SATO, MASAMICHI ITO, HIDEKAZU KAWANISHI
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Patent number: 10669695Abstract: There is provided a hydraulic driving device for working machine having operability handling a change in burden weight in a front working device due to a loaded burden and the like when the working machine that accumulates energy in an accumulator and recovers and regenerates the energy performs an operation of lowering the front working device. A hydraulic driving device 5 includes a main pump 101, a boom cylinder 3, a tank 20, a flow rate control valve 6, an accumulator 300, a first differential pressure control valve 201, and a second differential pressure control valve 202. The first differential pressure control valve 201 is located between the boom cylinder 3 and the accumulator 300. The first differential pressure control valve 201 performs control on discharge oil from the boom cylinder 3 such that a differential pressure between before and after the flow rate control valve 6 becomes a target differential pressure.Type: GrantFiled: January 31, 2018Date of Patent: June 2, 2020Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Masamichi Ito, Takatoshi Ooki
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Publication number: 20200169061Abstract: A light emitting element includes: a laminated structure 20 obtained by laminating a first compound semiconductor layer 21, an active layer 23, and a second compound semiconductor layer 22; a first light reflecting layer 41 disposed on a first surface side of the first compound semiconductor layer 21; a second light reflecting layer 42 disposed on a second surface side of the second compound semiconductor layer 22; and light convergence/divergence changing means 50. The first light reflecting layer 41 is formed on a concave mirror portion 43. The second light reflecting layer 42 has a flat shape. When light generated in the active layer 23 is emitted to the outside, a light convergence/divergence state before the light is incident on the light convergence/divergence changing means 50 is different from a light convergence/divergence state after the light passes through the light convergence/divergence changing means 50.Type: ApplicationFiled: May 9, 2018Publication date: May 28, 2020Inventors: Jugo MITOMO, Tatsushi HAMAGUCHI, Hiroshi NAKAJIMA, Masamichi ITO, Susumu SATO
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Publication number: 20200157768Abstract: A controller for a hydraulic excavator includes a first speed computation section that calculates a first speed of an arm cylinder from a value detected by an operation amount sensor; a second speed computation section that calculates a second speed from a value detected by a posture sensor and a third speed computation section calculates a third speed that is used as the speed of the arm cylinder in an actuator control section adapted to execute MC. The third speed computation section calculates the first speed as the third speed during the period between the detection of an input of operation for an arm by the operation amount sensor and predetermined time to, the third speed as a speed calculated from the first speed and the second speed during the period between t0 and time t1, and the second speed as the third speed at and after time t1.Type: ApplicationFiled: September 13, 2017Publication date: May 21, 2020Inventors: Masamichi ITO, Hisami NAKANO, Yusuke SUZUKI, Akihiro NARAZAKI, Teruki IGARASHI
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Publication number: 20200112141Abstract: A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, and a first semiconductor layer and a second semiconductor layer sandwiching the active layer. This light-emitting device further includes a current constriction layer having an opening and a vertical resonator including a first reflecting mirror having a concave-curved shape on the first semiconductor layer side and a second reflecting mirror on the second semiconductor side. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening. This light-emitting device further includes an optically transparent substrate between the first reflecting mirror and the laminate. The optically transparent substrate has a first convex portion having a convex-curved shape and one or more second convex portions on a surface on the side opposite to the laminate. The first convex portion is in contact with the first reflecting mirror.Type: ApplicationFiled: April 16, 2018Publication date: April 9, 2020Inventors: Susumu SATO, Tatsushi HAMAGUCHI, Jugo MITOMO, Hiroshi NAKAJIMA, Masamichi ITO, Hidekazu KAWANISHI
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Publication number: 20200084403Abstract: An image sensor includes a CIS (CMOS image sensor) pixel, a DVS (dynamic vision sensor) pixel, and an image signal processor. The CIS pixel includes a photoelectric conversion device generating charges corresponding to an incident light and a readout circuit generating an output voltage corresponding to the generated charges. The DVS pixel detects a change in an intensity of the incident light based on the generated charges to output an event signal and does not include a separate photoelectric conversion device. The image signal processor allows the photoelectric conversion device to be connected to the readout circuit or the DVS pixel.Type: ApplicationFiled: August 27, 2019Publication date: March 12, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yunjae SUH, Junseok KIM, Hyunsurk RYU, Keun Joo PARK, Masamichi ITO
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Publication number: 20200028325Abstract: A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, a first semiconductor layer, and a second semiconductor layer. The first semiconductor layer and the second semiconductor layer sandwich the active layer in between. The light-emitting device further includes a current confining layer, a concave-shaped first reflecting mirror provided on side of the first semiconductor layer, and a second reflecting mirror provided on side of the second semiconductor layer. The current confining layer has an opening. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening in between. The light-emitting device further includes a first reflecting layer and a phosphor layer. The first reflecting layer is disposed at a position opposed to the first reflecting mirror with a predetermined gap in between.Type: ApplicationFiled: March 5, 2018Publication date: January 23, 2020Inventors: JUGO MITOMO, TATSUSHI HAMAGUCHI, HIROSHI NAKAJIMA, MASAMICHI ITO, SUSUMU SATO, HIDEKAZU KAWANISHI
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Publication number: 20190334318Abstract: A surface-emitting laser according to an embodiment of the present disclosure includes a current constriction region having an opening and formed by impurities injected into a laminate from side of a second semiconductor layer; and a first DBR layer on side of a first semiconductor layer and a second DBR layer on the side of the second semiconductor layer having the laminate interposed therebetween at a position facing the opening. At the opening, an opening diameter close to the first DBR layer is larger than an opening diameter close to the second DBR layer.Type: ApplicationFiled: October 19, 2017Publication date: October 31, 2019Inventors: Tatsushi HAMAGUCHI, Jugo MITOMO, Hiroshi NAKAJIMA, Masamichi ITO, Susumu SATO, Noriyuki FUTAGAWA
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Publication number: 20190267774Abstract: A light-emitting element includes: a laminated structure body 20 which is formed from a GaN-based compound semiconductor and in which a first compound semiconductor layer 21 including a first surface 21a and a second surface 21b that is opposed to the first surface 21a, an active layer 23 that faces the second surface 21b of the first compound semiconductor layer 21, and a second compound semiconductor layer 22 including a first surface 22a that faces the active layer 23 and a second surface 22b that is opposed to the first surface 22a are laminated; a first light reflection layer 41 that is provided on the first surface 21a side of the first compound semiconductor layer 21; and a second light reflection layer 42 that is provided on the second surface 22b side of the second compound semiconductor layer 22. The first light reflection layer 41 includes a concave mirror portion 43, and the second light reflection layer 42 has a flat shape.Type: ApplicationFiled: September 1, 2017Publication date: August 29, 2019Inventors: Susumu SATO, Tatsushi HAMAGUCHI, Shoichiro IZUMI, Noriyuki FUTAGAWA, Masamichi ITO, Jugo MITOMO, Hiroshi NAKAJIMA
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Patent number: 10360660Abstract: An image processing apparatus that handles RAW images favorably performs display when shooting and display when reproducing. The apparatus images a subject and generates RAW images, and reduces the RAW images and generates reduced RAW images. The RAW images and reduced RAW images are recorded in a recording medium. When shooting, the reduced RAW images are subjected to developing processing for display, and when reproducing, the reduced raw images recorded in the recording medium are acquired and subjected to developing processing in accordance with instructions to reproduce, and each is used for display.Type: GrantFiled: August 20, 2015Date of Patent: July 23, 2019Assignee: Canon Kabushiki KaishaInventors: Shingo Nozawa, Masamichi Ito
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Publication number: 20190177952Abstract: There is provided a hydraulic driving device for working machine having operability handling a change in burden weight in a front working device due to a loaded burden and the like when the working machine that accumulates energy in an accumulator and recovers and regenerates the energy performs an operation of lowering the front working device. A hydraulic driving device 5 includes a main pump 101, a boom cylinder 3, a tank 20, a flow rate control valve 6, an accumulator 300, a first differential pressure control valve 201, and a second differential pressure control valve 202. The first differential pressure control valve 201 is located between the boom cylinder 3 and the accumulator 300. The first differential pressure control valve 201 performs control on discharge oil from the boom cylinder 3 such that a differential pressure between before and after the flow rate control valve 6 becomes a target differential pressure.Type: ApplicationFiled: January 31, 2018Publication date: June 13, 2019Inventors: Masamichi ITO, Takatoshi OOKI
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Patent number: 10273349Abstract: Fibers for fiber-reinforced resin of the present invention are fibers for fiber-reinforced resin to which a sizing agent is adhered. The fibers are at least one selected from carbon fibers and glass fibers, and an ester bond (—COO—) generated by denaturation of the sizing agent is present on surfaces of the fibers. A method for producing the same according to the present invention includes: subjecting fibers to which a sizing agent is adhered to at least one treatment selected from the group consisting of ozone oxidation, ultraviolet irradiation at a wavelength of 400 nm or less, and a plasma treatment. The fibers are at least one selected from carbon fibers and glass fibers. Thus, it is possible to provide carbon fibers having enhanced wettability to a matrix resin and thereby allowing the matrix resin to be impregnated between the fibers easily.Type: GrantFiled: March 11, 2014Date of Patent: April 30, 2019Assignee: KURASHIKI BOSEKI KABUSHIKI KAISHAInventors: Masamichi Ito, Tadaharu Tanaka, Wataru Horimoto
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Patent number: 10184228Abstract: To keep operability of a hydraulic actuator excellent even in a state pressure has been sufficiently accumulated in a pressure accumulator. In a hydraulic driving device of a work machine including a hydraulic actuator, a tank, a flow control valve, and a pressure accumulator, there are further provided with a first pressure compensation valve that is for controlling difference between front and back pressures of the flow control valve constant and a second pressure compensation valve that is arranged between the pressure accumulator and the tank and is for controlling difference between front and back pressures of the flow control valve and the first pressure compensation valve constant.Type: GrantFiled: March 2, 2017Date of Patent: January 22, 2019Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Masamichi Ito, Takatoshi Ooki, Kiwamu Takahashi
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Publication number: 20180324381Abstract: A solid-state imaging device includes a pixel array with unit pixels each having a photoelectric conversion device arranged in a matrix. Column signal lines are wired with respect to one column in the pixel arrangement and pixels are regularly connected to the column signal lines in accordance with rows in which pixels are positioned. A pixel signal reading unit has a column processing unit that reads pixel signals in units of plural pixels from the pixel array and performs column processing to read signals on a column basis, wherein the pixel signal reading unit includes a column input unit which can connect one or plural column signal lines arranged at a corresponding column to an input of one column processing unit through plural capacitors connected in parallel The column input unit has switches which can change a connection state between capacitors and column signal lines corresponding to the column.Type: ApplicationFiled: July 10, 2018Publication date: November 8, 2018Applicant: SONY CORPORATIONInventors: MASAMICHI ITO, TSUYOSHI HARA, YOSHIAKI INADA
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Publication number: 20180313027Abstract: A method for producing a carbon fiber opened sheet 8 is provided. The method includes performing a surface activation treatment on an unopened tow of carbon fibers (3a, 3b) to which a sizing agent has been applied, and opening the unopened tow of carbon fibers (3a, 3b) into a sheet. The opening process preferably uses at least one set of opening devices. The set of opening devices includes a holding shaft (4a-4d, 5a-5d) for bending and conveying the unopened tow of carbon fibers (3a, 3b), and an opening bar (6a-6c) that vibrates in the width direction of the unopened tow. A difference in height ?H between the end of the holding shaft (4a-4d, 5a-5d) and the end of the opening bar (6a-6c) is preferably 5 to 30 mm. With this configuration, even if a sizing agent is applied to the unopened tow of carbon fibers, the filaments are easily separated from each other and the tow is easily opened. Thus, the carbon fiber opened sheet is less likely to have a defect.Type: ApplicationFiled: August 21, 2017Publication date: November 1, 2018Applicant: KURASHIKI BOSEKI KABUSHIKI KAISHAInventors: Wataru HORIMOTO, Masamichi ITO
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Patent number: 10100495Abstract: In a hydraulic driving system for construction machines, when track motors 3f and 3g are operated and the delivery pressure of a main pump 2 increases to a second value PS2 of the set pressure of a main relief valve 14, the set pressure of a signal pressure relief valve 16 increases from a third value PA1 to a fourth value PA2, which is smaller than the second value PS2 of the set pressure of the main relief valve 14, the difference between the second value PS2 and the fourth value PA2 being smaller than the target LS differential pressure. With such a structure, even if one of actuators reaches the stroke end and the delivery pressure of the hydraulic pump rises to the set pressure of the main relief valve, the other actuators do not stop, and further when the main relief valve is configured to increase the set pressure during operation of a specific actuator, the load pressure of the specific actuator does not increase to the increased set pressure of the main relief valve.Type: GrantFiled: June 10, 2015Date of Patent: October 16, 2018Assignee: Hitachi Construction Machinery Tierra Co., Ltd.Inventors: Kiwamu Takahashi, Kazushige Mori, Masamichi Ito, Yoshifumi Takebayashi, Natsuki Nakamura, Yasuharu Okazaki, Kenji Yamada
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Patent number: 10051222Abstract: A solid-state imaging device includes a pixel array with unit pixels each having a photoelectric conversion device arranged in a matrix. Column signal lines are wired with respect to one column in the pixel arrangement and pixels are regularly connected to the column signal lines in accordance with rows in which pixels are positioned. A pixel signal reading unit has a column processing unit that reads pixel signals in units of plural pixels from the pixel array and performs column processing to read signals on a column basis, wherein the pixel signal reading unit includes a column input unit which can connect one or plural column signal lines arranged at a corresponding column to an input of one column processing unit through plural capacitors connected in parallel The column input unit has switches which can change a connection state between capacitors and column signal lines corresponding to the column.Type: GrantFiled: June 2, 2017Date of Patent: August 14, 2018Assignee: Sony CorporationInventors: Masamichi Ito, Tsuyoshi Hara, Yoshiaki Inada
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Patent number: 10003767Abstract: An image processing apparatus that handles RAW images efficiently performs editing for reproducing RAW images. The apparatus compresses each of RAW images and reduced RAW images which are reduced from the RAW images, and records each in a recording medium. When editing, the image processing apparatus communicates with an external apparatus and transmits the reduced RAW images stored in the recording medium to the external apparatus, and causes the external apparatus to perform editing processing of the reduced images. Further, the image processing apparatus uses editing information representing the content of editing processing from the external apparatus to execute editing of the RAW image corresponding to the reduced RAW image on which the editing processing has been performed, by referencing the editing information.Type: GrantFiled: August 20, 2015Date of Patent: June 19, 2018Assignee: Canon Kabushiki KaishaInventors: Shingo Nozawa, Masamichi Ito
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Publication number: 20180087243Abstract: To keep operability of a hydraulic actuator excellent even in a state pressure has been sufficiently accumulated in a pressure accumulator. In a hydraulic driving device of a work machine including a hydraulic actuator, a tank, a flow control valve, and a pressure accumulator, there are further provided with a first pressure compensation valve that is for controlling difference between front and back pressures of the flow control valve constant and a second pressure compensation valve that is arranged between the pressure accumulator and the tank and is for controlling difference between front and back pressures of the flow control valve and the first pressure compensation valve constant.Type: ApplicationFiled: March 2, 2017Publication date: March 29, 2018Inventors: Masamichi ITO, Takatoshi OOKI, Kiwamu TAKAHASHI
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Patent number: 9894270Abstract: An image processing apparatus is configured to capture an object image, generate a RAW image, perform simple development on the RAW image during the image capturing operation, and store not only the developed image but also the RAW image. In a predetermined interval, in an idle state, or in predetermined enlargement processing, the image processing apparatus reads a RAW file stored in a storage medium and performs high-quality image development to generate an image having higher image quality than that obtained by the simple development. If development processing has been completed by a high-quality image development unit, the image processing apparatus replaces the image obtained by the simple development with the image obtained by the high-quality image development and reproduces the image obtained by the high-quality image development.Type: GrantFiled: March 6, 2014Date of Patent: February 13, 2018Assignee: Canon Kabushiki KaishaInventors: Shingo Nozawa, Masamichi Ito