Patents Assigned to Nikkiso Co., Ltd.
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Patent number: 10811570Abstract: A semiconductor light-emitting device includes a substrate on which a semiconductor light-emitting element is mounted, the substrate having a first coefficient of thermal expansion, a lid member that covers the semiconductor light-emitting element, the lid member having a second coefficient of thermal expansion smaller than the first coefficient of thermal expansion, and a joining member that joins the lid member to the substrate to seal the semiconductor light-emitting element. The joining member includes a eutectic alloy solder.Type: GrantFiled: January 25, 2019Date of Patent: October 20, 2020Assignee: NIKKISO CO., LTD.Inventors: Hiroyasu Ichinokura, Shoichi Niizeki
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Publication number: 20200328331Abstract: A semiconductor light-emitting device includes a semiconductor light-emitting element that emits ultraviolet radiation at a wavelength of not more than 360 nm, a package substrate that houses the semiconductor light-emitting element, a thin film layer that is formed on the package substrate and has a predetermined thickness, and a sealing material made of a silicone resin which is provided on the thin film layer so as to have a lens shape and seals the semiconductor light-emitting element, in which the sealing material forms a contact angle of not less than 15° with the thin film layer.Type: ApplicationFiled: April 10, 2020Publication date: October 15, 2020Applicant: NIKKISO CO., LTD.Inventors: Shuichiro YAMAMOTO, Hiroyasu ICHINOKURA
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Patent number: 10800673Abstract: A water treatment apparatus 100 subjects water to be treated to ultraviolet treatment with ultraviolet light emitted from LED elements 31. The water treatment apparatus 100 comprises: a flow channel 10 through which water to be treated flows; an LED element housing chamber 30 located on outside of the flow channel 10, with a window portion 20 formed by a transparent member being interposed therebetween; and a plurality of LED elements 31 arranged in the LED element housing chamber 30, wherein the LED element housing chamber 30 has an inlet 34 and an outlet 35 for dry gas, and light emitting surfaces of the plurality of LED elements 31 are exposed to a space in the LED element housing chamber 30.Type: GrantFiled: October 11, 2017Date of Patent: October 13, 2020Assignees: METAWATER Co., Ltd., SENKO RIKEN Co., Ltd., NIKKISO CO., LTD.Inventors: Junichi Shiga, Tsukasa Kusano, Tetsumi Ochi, Shinya Watanabe, Eiichi Tsuga, Yusuke Kawakami
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Patent number: 10800672Abstract: A sterilization apparatus is provided with: a light source, which has a semiconductor light-emitting element that emits ultraviolet light; a housing, which forms a flow passage through which a fluid subject to sterilization passes; a light receiving unit, which receives a portion of the ultraviolet light emitted from the light source and detects the amount of ultraviolet light that has been received; and a control unit, which controls the output of the semiconductor light-emitting element based on information regarding the amount of ultraviolet light acquired from the light receiving unit. The housing has an incidence portion on which ultraviolet light becomes incident and a reflection portion, which reflects the ultraviolet light at the inner surface thereof. The light receiving unit is provided at a position where the light receiving unit can receive the portion of ultraviolet light that has been transmitted through the reflection portion.Type: GrantFiled: March 23, 2018Date of Patent: October 13, 2020Assignee: Nikkiso Co., LtdInventors: Hidenori Konagayoshi, Nobuhiro Torii, Tetsumi Ochi, Hiroki Kiuchi
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Patent number: 10773006Abstract: This dialysis-fluid supply system, which mixes a diluent and at least two drugs to generate a dialysis fluid, and outputs said dialysis fluid, is provided with: two tanks which mix the drugs and the diluent to generate the dialysis fluid, and store said dialysis fluid; a water supply device and a drug supply device which supply the diluent and the drugs to each of the tanks; mechanisms for outputting, to a dialysis device, the dialysis fluid stored in each of the tanks; and a control unit for controlling the driving of these. During output of the dialysis fluid from at least one of the tanks, the control unit sequentially switches the supply destination tank for the drugs and the diluent, and the dialysis-fluid output source tank, between the two tanks in order to generate the dialysis fluid in the other tank.Type: GrantFiled: November 12, 2015Date of Patent: September 15, 2020Assignee: NIKKISO CO., LTD.Inventors: Masato Fujiwara, Yoshimichi Masuda, Hiroshi Nimura
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Publication number: 20200279973Abstract: A nitride semiconductor light-emitting element includes an n-type cladding layer including n-type AlGaN having a first Al composition ratio, a barrier layer including AlGaN that is located on the n-type cladding layer side in a multiple quantum well layer and has a second Al composition ratio greater than the first Al composition ratio, and a graded layer that is located between the n-type cladding layer and the barrier layer and has a third Al composition ratio that is between the first Al composition ratio and the second Al composition ratio, wherein the third Al composition ratio of the graded layer increases at a predetermined increase rate from the first Al composition ratio toward the second Al composition ratio.Type: ApplicationFiled: July 31, 2018Publication date: September 3, 2020Applicant: NIKKISO CO., LTD.Inventors: Yuta FURUSAWA, Mitsugu WADA, Yusuke MATSUKURA, Cyril PERNOT
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Publication number: 20200279971Abstract: A nitride semiconductor light-emitting element includes an n-type cladding layer including n-type AlGaN and having a first Al composition ratio, and a multiple quantum well layer in which a plurality (number N) of barrier layers including AlGaN having a second Al composition ratio more than the first Al composition ratio and a plural (number N) well layers having an Al composition ratio less than the second Al composition ratio are stacked alternately in this order, wherein the second Al composition ratio of the plurality of barrier layers of the multiple quantum well layer increases at a predetermined increase rate from an n-type cladding layer side toward an opposite side to the n-type cladding layer side.Type: ApplicationFiled: July 31, 2018Publication date: September 3, 2020Applicant: NIKKISO CO., LTD.Inventors: Yuta FURUSAWA, Mitsugu WADA, Yusuke MATSUKURA, Cyril PERNOT
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Patent number: 10757923Abstract: Provided is an aquaculture system, including a water tank holding seawater and housing shellfish or fish to be cultivated, a water intake unit for introducing the seawater into the water tank, a draining unit for draining the seawater in the water tank, a first bubble generator that generates and supplies microbubbles with a diameter of not less than 10 ?m and not more than 100 ?m in the water tank, and a second bubble generator that generates and supplies nanobubbles with a diameter of not more than 10 ?m in the water tank, wherein the seawater in the water tank is exchanged by simultaneously carrying out introduction of the seawater using the water intake unit and drainage of the seawater in the water tank using the draining unit.Type: GrantFiled: August 21, 2018Date of Patent: September 1, 2020Assignees: NIKKISO CO., LTD., KENSUI CO., LTD.Inventors: Tetsumi Ochi, Ken Kawasaki
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Patent number: 10759679Abstract: A fluid sterilization device includes: a flow passage tube in which a processing passage where a passing fluid is sterilized is formed; an inflow passage or an outflow passage formed in the flow passage tube; a light source that irradiates the processing passage with ultraviolet light; and a rotating body provided in the processing passage. The rotating body is rotated around a longitudinal direction of the processing passage in response to a flow of the fluid passing through the processing passage and is configured to come into contact with an inner wall of the flow passage tube during rotation.Type: GrantFiled: October 15, 2018Date of Patent: September 1, 2020Assignee: Nikkiso Co., Ltd.Inventor: Hideki Asano
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Patent number: 10744216Abstract: A fluid sterilization device includes: a processing flow passage in which a fluid subject to sterilization flows; a window member provided between a light source for irradiating the fluid in the processing flow passage with ultraviolet light and the processing flow passage, the window member including an incidence surface on which the ultraviolet light from the light source is incident and an exit surface from which the ultraviolet light exits toward the processing flow passage; and a heating body provided to be in contact with the incidence surface and adapted to heat the window member.Type: GrantFiled: January 30, 2019Date of Patent: August 18, 2020Assignee: NIKKISO CO., LTD.Inventors: Shoichi Niizeki, Kenta Ura
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Patent number: 10736979Abstract: A sterilization device includes: a treatment chamber with a discharge valve provided on a downstream side of the treatment chamber; a light source that irradiates a fluid stored temporarily in the treatment chamber with ultraviolet light; and a heat exchange chamber connected to an upstream side of the treatment chamber via a gate valve. The heat exchange chamber is thermally connected to the light source. The sterilization device may further include a heat pipe that thermally connects the light source and the heat exchange chamber. The heat pipe may be provided to extend vertically upward from the light source toward the heat exchange chamber.Type: GrantFiled: January 16, 2018Date of Patent: August 11, 2020Assignee: NIKKISO CO., LTD.Inventor: Hiroki Kiuchi
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Patent number: 10736980Abstract: An ultraviolet sterilization device includes a processing chamber that houses a subject of sterilization and a light source that irradiates an interior of the processing chamber with ultraviolet light. A wall of the processing chamber has a stack structure including a first layer made of a fluororesin material and a second layer made of an ultraviolet reflective material, the first layer being provided on the inner side of the processing chamber. The light source includes an aluminum gallium nitride (AlGaN) based ultraviolet light emitting device.Type: GrantFiled: February 26, 2019Date of Patent: August 11, 2020Assignee: NIKKISO CO., LTD.Inventors: Hiroaki Mochizuki, Shinya Watanabe
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Publication number: 20200238678Abstract: A blade includes an edge to be pressed against an end portion of a carrier film to fold the end portion upwards from a sheet. A clamp mechanism peels the carrier film off from the sheet by moving while clamping the upwardly folded end portion of the carrier film.Type: ApplicationFiled: December 5, 2019Publication date: July 30, 2020Applicant: NIKKISO CO., LTD.Inventors: Toru MAKINO, Tomoyo SAWADA, Takahiro MORI
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Publication number: 20200230311Abstract: A blood purification device used with a blood circuit includes an arterial-side line and a venous-side line attached to a blood purifier to which, at the ends thereof, the arterial-side line and the venous-side line are connected, the blood purification device including: a supply line connected to a supply unit which supplies a priming fluid, and which is capable of being connected to a leading end of the venous-side line; a discharge line connected to a discharge unit which discharges the priming fluid after use, and which is capable of being connected to a leading end of the arterial-side line; and a blood pump which is disposed upon the arterial-side line. By driving the blood pump in a state of the supply line being connected to the venous-side line and the discharge line being connected to the arterial-side line, the blood circuit and the blood purifier are primed.Type: ApplicationFiled: August 7, 2017Publication date: July 23, 2020Applicant: NIKKISO CO., LTD.Inventors: Hiroshi NIMURA, Yoshimichi MASUDA, Masato FUJIWARA
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Patent number: 10720547Abstract: A method of manufacturing a semiconductor light emitting device includes: forming an active layer of an aluminum gallium nitride (AlGaN)-based semiconductor material on an n-type clad layer of an n-type AlGaN-based semiconductor material; forming a p-type semiconductor layer on the active layer; removing portions of the p-type semiconductor layer, the active layer, and the n-type clad layer so as to expose a partial region of the n-type clad layer; and forming an n-side electrode on the partial region of the n-type clad layer exposed. The removing includes first dry-etching performed by using both a reactive gas and an inert gas and second dry-etching performed after the first dry-etching by using a reactive gas.Type: GrantFiled: May 24, 2019Date of Patent: July 21, 2020Assignee: NIKKISO CO., LTD.Inventors: Haruhito Sakai, Noritaka Niwa, Tetsuhiko Inazu
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Publication number: 20200227590Abstract: A nitride semiconductor light-emitting element includes an n-type cladding layer including n-type AlGaN, and a multiple quantum well layer including a barrier layer that includes AlGaN and is located on the n-type cladding layer side, wherein the nitride semiconductor light-emitting element further comprises a trigger layer that is located between the n-type cladding layer and the barrier layer and comprises Si, wherein a plural V-pits starting from dislocations in the n-type cladding layer and ending in the multiple quantum well are formed in the n-type cladding layer and the multiple quantum well layer.Type: ApplicationFiled: July 20, 2018Publication date: July 16, 2020Applicant: NIKKISO CO., LTD.Inventors: Cyril PERNOT, Yusuke MATSUKURA, Yuta FURUSAWA, Mitsugu WADA
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Patent number: 10703646Abstract: A fluid sterilization device includes: a housing formed with a processing passage for sterilizing a fluid passing through the processing passage; a light source that radiates ultraviolet toward the processing passage; and a transmissive member provided between the light source and the processing passage and transmitting the ultraviolet light radiated by the light source. The transmissive member is a one-piece component including: a focusing part that focuses the ultraviolet light radiated by the light source toward the processing passage by refracting or reflecting the ultraviolet light; an exit part that guides the ultraviolet light transmitted through the focusing part toward the processing passage, and a supported part formed on an outer circumference of the exit part to be contiguous with the exit part, and supported by the housing. The exit part is exposed to the processing passage.Type: GrantFiled: June 19, 2018Date of Patent: July 7, 2020Assignee: NIKKISO CO., LTD.Inventors: Shinya Watanabe, Nobuhiro Torii
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Patent number: 10682451Abstract: Provided is a calibration method for flowmeters in a blood dialysis system, whereby highly accurate calibration can be performed even by omitting a reference flowmeter not directly relating to dialysis therapy. This calibration method comprises: while preventing outflow into a blood channel in a blood purifier, supplying a liquid to a channel, said channel passing through an inflow flowmeter and an outflow flowmeter; and then calibrating the inflow flowmeter and the outflow flowmeter correction whereby, at the time of liquid supply, a value measured by the outflow flowmeter is equalized to a value measured by inflow flowmeter.Type: GrantFiled: April 11, 2016Date of Patent: June 16, 2020Assignee: NIKKISO CO., LTD.Inventors: Yoshimichi Masuda, Masato Fujiwara, Hiroshi Nimura
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Patent number: 10669167Abstract: A water treatment device includes: a dual-pipe structure unit including an outer pipe, an inner pipe provided in the outer pipe, and a prevention member provided between the outer pipe and the inner pipe; and a light source unit radiating ultraviolet light in the axial direction to irradiate water subject to treatment flowing in the inner pipe. The inner pipe includes an opposing end facing the light source unit across a gap and an inflow end positioned opposite to the opposing end. The outer pipe includes an outflow port provided on an outer circumferential surface of the outer pipe. The water subject to treatment flowing out of the inner pipe via the gap flows out from the outflow port.Type: GrantFiled: April 30, 2019Date of Patent: June 2, 2020Assignees: NIKKISO CO., LTD., METAWATER CO., LTD., SENKO RIKEN CO., LTD.Inventors: Tetsumi Ochi, Shinya Watanabe, Junichi Shiga, Tsukasa Kusano, Eiichi Tsuga, Yusuke Kawakami
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Patent number: 10665751Abstract: A method of manufacturing a semiconductor light-emitting device includes: preparing a layer stack including a light-extracting layer and a light-emitting structure, the light-extracting layer having a light-extracting surface in which a rugged structure is provided, the light-emitting structure being provided on a principal surface opposite to the light-extracting surface of the light-extracting layer; forming a mask over the rugged structure in a partial region of the light-extracting surface; forming a planar surface by removing the rugged structure that is exposed without having the mask formed thereover; and singulating the layer stack by irradiating the planar surface with a laser and cutting at least the light-extracting layer at a position of the planar surface.Type: GrantFiled: August 24, 2018Date of Patent: May 26, 2020Assignee: Nikkiso Co., Ltd.Inventors: Noritaka Niwa, Tetsuhiko Inazu