Patents Assigned to Nikkiso Co., Ltd.
  • Patent number: 10890166
    Abstract: A non-pulsation pump is provided with: a cam mechanism that converts the rotational motion of a shared motor into reciprocal motion having a prescribed phase difference; a plurality of cross heads that make reciprocal motion with a prescribed phase difference through the cam mechanism; and a plurality of reciprocating pumps that are driven with a prescribed phase difference and that include plungers connected to the cross heads, wherein the total discharge flowrate toward a shared discharge pipe is kept constant. This non-pulsation pump includes a preliminary compression step for moving the plungers of the reciprocating pumps to a discharge side by very small amounts before a discharging step but after a suction step, and has a stroke adjustment mechanism for adjusting the effective stroke length of the plunger in the preliminary compression step. Thus, generation of pulsation can be suppressed even when the set pressure changes.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: January 12, 2021
    Assignee: NIKKISO CO., LTD.
    Inventors: Fusao Murakoshi, Hideaki Sato
  • Patent number: 10883680
    Abstract: A light-emitting module includes: a package substrate that is provided with a recessed portion having an opening at an upper surface thereof; a light-emitting device that is housed in the recessed portion; a window member that is provided on the upper surface such that the window member covers the opening; and a sealing portion that bonds the package substrate and the window member. The window member includes a lens portion facing the light-emitting device and a flange portion that projects from the lens portion and bonds to the sealing portion. The lens portion and the flange portion are formed of the same glass material.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: January 5, 2021
    Assignee: NIKKISO CO., LTD.
    Inventors: Hidenori Konagayoshi, Nobuhiro Torii, Tetsumi Ochi, Hiroki Kiuchi
  • Patent number: 10882764
    Abstract: A fluid sterilization apparatus includes: a flow passage tube in which a processing passage where a passing fluid is sterilized is formed; a first light source that irradiates the processing passage with ultraviolet light; an inflow passage formed in a direction that intersects an outer circumferential surface of the flow passage tube; and a communication passage that causes the inflow passage to communicate with the processing passage. The communication passage has a narrow passage in the middle of a path from the inflow passage toward an opening of a first end, the narrow passage being narrower than a passage toward the inflow passage.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: January 5, 2021
    Assignee: NIKKISO CO., LTD.
    Inventor: Hiroaki Mochizuki
  • Patent number: 10870824
    Abstract: A cell support composite includes: a substrate formed of an artificial material; a laminin molecule or a fragment thereof which adheres to at least a part of the substrate; and a renal tubule epithelial cell or a renal tubule epithelial-like cell which is a culture cell attached to the substrate via the laminin molecule or the fragment thereof.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 22, 2020
    Assignee: NIKKISO CO., LTD.
    Inventor: Fumihiko Kitagawa
  • Publication number: 20200388725
    Abstract: A nitride semiconductor light-emitting element includes an n-type cladding layer including n-type AlGaN, and an active layer that includes AlGaN and is located on the n-type cladding layer. Si concentration distribution in a direction of stacking the n-type cladding layer and the active layer has a local peak in the active layer.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: NIKKISO CO., LTD.
    Inventors: Yusuke MATSUKURA, Cyril PERNOT
  • Patent number: 10854773
    Abstract: 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; dry-etching 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; causing nitrogen atoms (N) to react with the partial region of the n-type clad layer exposed; and forming an n-side electrode on the partial region of the n-type clad layer that the nitrogen atoms are caused to react with.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 1, 2020
    Assignee: Nikkiso Co., Ltd.
    Inventors: Kazushige Igarashi, Noritaka Niwa, Tetsuhiko Inazu
  • Patent number: 10847699
    Abstract: An optical semiconductor apparatus includes: an optical semiconductor device including a translucent support substrate; a buffer layer on the support substrate, a seal ring in a frame shape provided in an outer region on the buffer layer, an active layer provided on an inner region of the buffer layer, and an electrode provided on the active layer. The optical semiconductor apparatus further including: a package substrate on which the optical semiconductor device is mounted; and a sealing part that seals a space between the seal ring and the package substrate.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: November 24, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Shoichi Niizeki, Hiroyasu Ichinokura
  • Publication number: 20200365779
    Abstract: A semiconductor light-emitting device includes a semiconductor light-emitting element that emits ultraviolet light, a package substrate mounting the semiconductor light-emitting element, a sealing resin that seals the semiconductor light-emitting element, and a coat film further provided between a light output surface of the semiconductor light-emitting element and the sealing resin. The refractive index of the coat film and the refractive index of the sealing resin are smaller than the refractive index of a member constituting the light output surface of the semiconductor light-emitting element, and the refractive index difference between the coat film and the sealing resin is not more than 0.15.
    Type: Application
    Filed: October 12, 2018
    Publication date: November 19, 2020
    Applicant: NIKKISO CO., LTD.
    Inventors: Shuichiro YAMAMOTO, Tadaaki MAEDA, Naoki SHIBATA
  • Patent number: 10840414
    Abstract: An optical semiconductor apparatus includes: a package substrate that includes a recess that opens on a top surface of the package substrate; a light emitting device housed in the recess; a window member provided to cover an opening of the recess; and a sealing structure that seals a space between the package substrate and the window member. The sealing structure includes a first metal layer provided in a shape of a frame on the top surface of the package substrate, a second metal layer provided in a shape of a frame on an inner surface of the window member, and a metal bonding part provided between the first metal layer and the second metal layer. An entirety of one of the first and second metal layers is positioned in a region where the other of the first and second metal layers is provided.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 17, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Hiroyasu Ichinokura, Hisanori Ishiguro, Kenta Ura
  • Patent number: 10828382
    Abstract: A sterilization apparatus is provided at a discharge port for supplying a liquid. The sterilization apparatus includes: an annular light guide that has a connection end that is connected to the discharge port and an open end that is on the opposite side of the connection end, and that forms a flow passage communicating with the discharge port; and a light source that allows ultraviolet light to enter the light guide such that the ultraviolet light is transmitted through the light guide while being reflected between an inner circumferential surface and an outer circumferential surface of the light guide. The sterilization apparatus irradiates a liquid that is in contact with the inner circumferential surface of the light guide with the ultraviolet light for sterilization.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: November 10, 2020
    Assignee: NIKKISO CO., LTD.
    Inventor: Hideki Asano
  • Patent number: 10829395
    Abstract: Provided is a flowing-water sterilization system that includes a flow channel for passing seawater to be sterilized, and a light source emitting ultraviolet light to irradiate the seawater passing through the flow channel, wherein the light source includes a light-emitting diode that emits light not including infrared light. The light-emitting diode may emit ultraviolet light that has a wavelength of not less than 250 nm and not more than 350 nm and does not include light with a wavelength of not more than 200 nm. The system may further include a cooling unit for cooling the light source.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 10, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Tetsumi Ochi, Shinya Watanabe, Jin Takano, Takashi Okamoto
  • Patent number: 10814055
    Abstract: 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: Grant
    Filed: November 12, 2015
    Date of Patent: October 27, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Masato Fujiwara, Yoshimichi Masuda, Hiroshi Nimura
  • Patent number: 10811570
    Abstract: 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: Grant
    Filed: January 25, 2019
    Date of Patent: October 20, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Hiroyasu Ichinokura, Shoichi Niizeki
  • Publication number: 20200328331
    Abstract: 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: Application
    Filed: April 10, 2020
    Publication date: October 15, 2020
    Applicant: NIKKISO CO., LTD.
    Inventors: Shuichiro YAMAMOTO, Hiroyasu ICHINOKURA
  • Patent number: 10800672
    Abstract: 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: Grant
    Filed: March 23, 2018
    Date of Patent: October 13, 2020
    Assignee: Nikkiso Co., Ltd
    Inventors: Hidenori Konagayoshi, Nobuhiro Torii, Tetsumi Ochi, Hiroki Kiuchi
  • Patent number: 10800673
    Abstract: 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: Grant
    Filed: October 11, 2017
    Date of Patent: October 13, 2020
    Assignees: METAWATER Co., Ltd., SENKO RIKEN Co., Ltd., NIKKISO CO., LTD.
    Inventors: Junichi Shiga, Tsukasa Kusano, Tetsumi Ochi, Shinya Watanabe, Eiichi Tsuga, Yusuke Kawakami
  • Patent number: 10773006
    Abstract: 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: Grant
    Filed: November 12, 2015
    Date of Patent: September 15, 2020
    Assignee: NIKKISO CO., LTD.
    Inventors: Masato Fujiwara, Yoshimichi Masuda, Hiroshi Nimura
  • Publication number: 20200279971
    Abstract: 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: Application
    Filed: July 31, 2018
    Publication date: September 3, 2020
    Applicant: NIKKISO CO., LTD.
    Inventors: Yuta FURUSAWA, Mitsugu WADA, Yusuke MATSUKURA, Cyril PERNOT
  • Publication number: 20200279973
    Abstract: 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: Application
    Filed: July 31, 2018
    Publication date: September 3, 2020
    Applicant: NIKKISO CO., LTD.
    Inventors: Yuta FURUSAWA, Mitsugu WADA, Yusuke MATSUKURA, Cyril PERNOT
  • Patent number: 10759679
    Abstract: 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: Grant
    Filed: October 15, 2018
    Date of Patent: September 1, 2020
    Assignee: Nikkiso Co., Ltd.
    Inventor: Hideki Asano