Patents Examined by Krishnan S Menon
  • Patent number: 10974205
    Abstract: A composite semipermeable membrane includes a porous supporting membrane and a separation functional layer, in which, in cross-sections having a length of 2.0 ?m in a membrane surface direction, the average number density of projections in the separation functional layer which have a height of one-fifth or more of the 10-point average surface roughness is 10.0-30.0 projections/?m and the projections have an average height less than 100 nm, and in which a water production rate and a salt rejection are predetermined values or more after an aqueous solution is passed through under certain conditions.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: April 13, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Harutoki Shimura, Yoshie Marutani, Koji Nakatsuji, Kiyohiko Takaya, Masakazu Koiwa, Takao Sasaki, Masahiro Kimura
  • Patent number: 10974206
    Abstract: In order to provide a composite semipermeable membrane which combines strength and water permeability, the present invention provides a composite semipermeable membrane including: a supporting membrane including a substrate and a porous support; and a separation functional layer disposed on the porous support, in which the substrate has a weight A per unit area, a portion of the porous support which is located within the substrate has a weight B per unit area, and a sum of the weight A and the weight B, (A+B), is 30 to 100 g/m2, and a ratio between the weight A and the weight B, B/A, is 0.10 to 0.60.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 13, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shuji Furuno, Yoshiki Okamoto, Hiroho Hirozawa, Masahiro Kimura, Takao Sasaki
  • Patent number: 10973969
    Abstract: A fluid preparation system has a sealed sterilized fluid circuit with a sealed sterilized container with a conductivity sensor in communication with an interior of said container. Further, at least one sealed connector is adapted for adding fluid to said container, and at least one sealed connector is adapted for removing fluid from said container. The conductivity sensor is contained in a test line in communication with said interior and is adapted to be connected to a source of suction thereby to draw a sample of contents of said container. Furthermore, the test line may have a check valve to prevent ingress of contaminants into said container, and the sealed connector is adapted for adding fluid to said container and may have an inline sterile filter. Furthermore, the system may have a controller that controls pumping actuators.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 13, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Jeffrey H. Burbank, Dennis M. Treu, Goetz Friederichs, Brian C. Green, Christopher S. McDowell, James M. Brugger
  • Patent number: 10973972
    Abstract: An extracorporeal blood treatment machine for carrying out a blood treatment including a machine front on which a hollow fiber filter module is arranged in a horizontal position, which hollow fiber filter module includes a cylindrical housing, a blood chamber having a blood inlet nozzle and a blood outlet nozzle and a solution chamber having a solution inlet nozzle extending transversely to the longitudinal direction of the hollow fiber filter module and a solution outlet nozzle extending transversely to the longitudinal direction of the hollow fiber filter module, the solution chamber being semi-permeably communicated at least in portions with the blood chamber, wherein a height potential is present in the horizontal position between the solution inlet nozzle and the solution outlet nozzle so that drainage of solution is enabled via one of the solution nozzles and evacuation of air bubbles is enabled via an other of the solution nozzles.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: April 13, 2021
    Assignee: B. BRAUN AVITUM AG
    Inventor: Kai-Uwe Ritter
  • Patent number: 10967113
    Abstract: A dialysate-extracting apparatus in which a collecting port can be disinfected with no disinfecting work to be performed by a worker. A dialysate-extracting apparatus includes a dialysate-extracting device having an introduction port and a discharge port each of which is connected to the flow route for liquid and allows the liquid to flow therethrough, and a collecting port from which the liquid flowing in the flow route is collectable; and an opening-and-closing device that is movable between a closing position where the opening-and-closing device covers the collecting port of the dialysate-extracting device and an opening position where the opening-and-closing device 6 opens the collecting port. The dialysate-extracting apparatus further includes an ultraviolet-applying device attached to the opening-and-closing device and that is capable of applying ultraviolet rays to the collecting port when the opening-and-closing device is at the closing position.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: April 6, 2021
    Assignee: Nikkiso Company Limited
    Inventor: Hiroaki Suzuki
  • Patent number: 10960331
    Abstract: A cell-capturing filter that filters out cells includes a metallic porous film having a plurality of through holes that extend through a first main surface and a second main surface, which are opposite to each other. The metallic porous film includes a filtering portion including the plurality of through holes, and a frame portion disposed to surround an outer periphery of the filtering portion. In the filtering portion, a first film thickness of the metallic porous film at a center of the filtering portion is smaller than a second film thickness of the metallic porous film at a portion located closer to the frame portion than the center of the filtering portion.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: March 30, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Wataru Yamamoto, Masaru Banju, Takashi Kondo
  • Patent number: 10961144
    Abstract: A method of providing ultrapure water from feed water containing hardness forming ions, comprising at least the steps of passing the feed water successively through: (i) providing a feed water stream containing hardness forming ions: (ii) passing the feed water stream through a reverse osmosis (RO) unit to remove at least some ionic contamination to provide a RO permeate water stream: (iii) passing the RO permeate water stream though a capacitive de-ionisation (CDI) unit to remove at least some of the ions to provide a post-CDI stream: and (iv) passing the post-CDI stream through an electrodeionisation (EDI) unit to remove at least some of the ions and carbon dioxide and to provide an ultrapure water stream for dispense or storage. In this way, the capacitive deionisation provides a wholly or substantially continuous process for removing a proportion of unwanted ions, especially the hardness forming ions, from the feed water prior to the use of electrodeionisation.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: March 30, 2021
    Assignee: VWS (UK) LTD.
    Inventors: Ignazio Dentici, Michael Ball, Nigel Emery
  • Patent number: 10953367
    Abstract: The present invention relates to a method of concentrating an aqueous solution by low pressure under a zero osmotic pressure difference condition, and more particularly to a method of concentrating a solute-containing aqueous solution by low pressure under a zero osmotic pressure difference condition. When the method of the present invention is used, there are advantages in that energy consumption is low, and an aqueous solution can be concentrated until it can reach the maximum solute concentration or a solute concentration of 100%, without having to use an extraction solvent. In addition, there is an advantage in that the need to use a separate osmotic pressure draw solution is eliminated.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 23, 2021
    Assignee: LAB TO MARKET INC.
    Inventor: Ho Nam Chang
  • Patent number: 10946343
    Abstract: The present disclosure relates to improved semipermeable membranes based on acrylonitrile copolymers for use in dialyzers for the extracorporeal treatment of blood in conjunction with hemodialysis, hemofiltration or hemodiafiltration. The present disclosure further relates to methods of producing such membranes.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: March 16, 2021
    Assignee: GAMBRO LUNDIA AB
    Inventor: Benjamin Malard
  • Patent number: 10947133
    Abstract: Underwater systems for data center cooling and water desalination are provided. Aspects of the systems include a data center subunit and a desalination subunit that are co-located with each other at an underwater location, where the desalination subunit is configured to receive warm water output from the data center. Aspects of the invention also include methods for cooling a data center and desalinating water using underwater systems as described herein.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: March 16, 2021
    Assignee: DeepWater Desal LLC
    Inventor: Brent R. Constantz
  • Patent number: 10946345
    Abstract: Hydrophobic hollow-fiber membrane made from a vinylidene fluoride polymer with a wall and a wall thickness, an outer surface on its outer side, an inner surface on its inner side and facing its lumen and adjacent to the inner surface a supporting layer having a structure that is substantially isotropic across the wall thickness, the supporting layer extending over at least 80% of the wall thickness and comprising pores having an average diameter of less than 1 ?m, and wherein the hollow-fiber membrane has pores on its outer surface and on its inner surface, characterized in that the vinylidene fluoride polymer has a weight-average molecular weight MW in the range from 550 000 to 700 000 daltons and a polydispersivity greater than 3.0; the pores in the outer and in the inner surface are formed like islands and have a maximum ratio of their longitudinal extension to the transverse extension of 10; the porosity lies in the range from 50 to 90 vol.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: March 16, 2021
    Assignee: EM Innovative Properties Company
    Inventors: Oliver Schuster, Quan Huang, Ngoc-Phung Duong, Karl Bauer, Wolfgang Ansorge
  • Patent number: 10940404
    Abstract: In an embodiment, a coalescing separator apparatus includes a containment well configured to include a coalescing media an inlet on a first end wall and an outlet on a second end wall; a surface-skimming drain disposed in the containment well; and a modular weir comprising a weir front wall, a weir middle wall, and a weir back wall, each of which are coupled to two opposing weir side walls, a through-hole being disposed in the weir back wall, through which the outlet is disposed. A modular weir and method for quickly replacing, maintaining, or repairing a weir in a coalescing separator apparatus is also described.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: March 9, 2021
    Assignee: OSI Environmental LLC
    Inventors: Michael A. Gaudiani, Jeff Mann
  • Patent number: 10940254
    Abstract: The invention relates to an apparatus for extracorporeal blood treatment that comprises a device 1 for providing fresh dialysate and a drain 2 for used dialysate, a balancing device 4 for balancing fresh dialysate and used dialysate, an ultrafiltration device 15, and a dialyser 3 that is divided into a blood chamber 6 and a dialysate chamber 7 by a semi-permeable membrane 5. The invention further relates to a method for operating such an apparatus for extracorporeal blood treatment. The apparatus according to the invention is based on the use of the ultrafiltration device 15 of the blood treatment apparatus for raising the liquid level in the air separation device 12 on the secondary side of the dialysate system I. In the apparatus according to the invention, the ultrafiltration device 15 is designed such that the ultrafiltration device can be operated not only in an ultrafiltration mode, but also in a ventilation mode.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: March 9, 2021
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventor: Jurgen Hacker
  • Patent number: 10934181
    Abstract: The subject disclosure provides systems for electric power generation and water desalination. In certain aspects, the systems include a power generation unit such as a reciprocating generator or fuel cell having a water cooling subsystem configured to receive cool water and output warm water and a water desalination plant co-located with the power generation unit and configured to receive and desalinate the warm water. Aspects of the invention also include methods for cooling a power generation unit using a water cooling subsystem and desalinating water with a desalination plant that is co-located with the power generation unit.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: March 2, 2021
    Assignee: DeepWater Desal LLC
    Inventor: Brent R. Constantz
  • Patent number: 10933376
    Abstract: A reverse osmosis system includes a first pretreatment system and a fluid source located below a reservoir. A first membrane housing has a reverse osmosis membrane therein. A first turbocharger includes a first pump portion and a first turbine portion. The first pump portion receives feed fluid from the first pretreatment system, pressurizing the feed fluid and communicates the feed fluid to the feed fluid inlet. The first turbine portion receives brine fluid from the brine outlet. The system further includes a second and third turbocharger. A second turbine portion and the third turbine portion receive brine fluid from the first turbine portion. Second feed fluid is communicated through a booster pump, a second pretreatment system, and second pump portion to increase a pressure of the second feed fluid. The second feed fluid is communicated to the third pump portion which communicates the pressurized second feed fluid to the first pump portion.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 2, 2021
    Assignee: FLUID EQUIPMENT DEVELOPMENT COMPANY, LLC
    Inventor: Eli Oklejas, Jr.
  • Patent number: 10927020
    Abstract: A high velocity cross flow dynamic membrane filtration system disc membrane assembly includes a frame having first and second end members and a plurality of rails extending between the first and second end members. At least two parallel support shafts are coupled to the frame, each support shaft defining a longitudinal axis about which is positioned a plurality of axially spaced membrane discs. The plurality of membrane discs associated with one of the at least two parallel support shafts is interspersed between the plurality of membrane discs associated with another of the at least two parallel support shafts. Each rail of the plurality of rails is configured to be received by a mounting rail within a vessel defining a treatment chamber. A permeate tube is coupled to each support shaft and in fluid communication with the membrane discs associated with that support shaft.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: February 23, 2021
    Assignee: PRO-EQUIPMENT, INC.
    Inventors: Richard Davie, Ingchen Douglas Hwang, Ludek Zatopek, Karel Vokurka
  • Patent number: 10918999
    Abstract: In a cell-capturing filter including a metal porous membrane, degradation over time is determined earlier. A cell-capturing filter includes a metal porous membrane having a plurality of through-holes that penetrate between two principal surfaces facing each other. The metal porous membrane is made of an alloy of nickel and an element selected from the group consisting of gold, platinum, and palladium, or a metal containing nickel as a main component. A metal containing copper as a main component is attached to a part of either one of the principal surfaces of the metal porous membrane. By checking a state change of the metal containing copper as a main component, degradation over time of the metal porous membrane can be determined earlier.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: February 16, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaru Banju, Wataru Yamamoto, Junko Watanabe, Takashi Kondo
  • Patent number: 10912877
    Abstract: The present invention relates to an apparatus for the extracorporeal removal of protein-bound toxins from blood comprising at least one blood purification apparatus, in particular at least one dialysis machine, hemofilter or adsorber, as well as at least one means for generating a field in the blood purification apparatus and/or in an element in flow communication with the blood purification apparatus, in particular in a line section connected to the blood purification apparatus, wherein the means comprises at least two strip conductors which are arranged on at least two preferably oppositely disposed sides of the blood purification apparatus or of the element such that the field is preferably predominantly generated within the blood purification apparatus or preferably predominantly within the element.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: February 9, 2021
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Anselm Fabig, Ulrich Tschulena, Sonja Steppan
  • Patent number: 10906000
    Abstract: A reverse osmosis system includes a membrane housing comprising a reverse osmosis membrane therein. The membrane housing comprising a feed fluid inlet, a brine outlet and a permeate outlet. A first turbocharger has a first pump portion and a first turbine portion. The brine outlet is coupled to a first pipe directing a first portion of brine to the first pump portion. The first pump portion is in fluid communication with the feed fluid inlet. A feed pump communicates feed fluid to the feed fluid inlet through the first turbine portion. The brine outlet is coupled to a second pipe directing a second portion of brine toward a drain through a brine control valve.
    Type: Grant
    Filed: September 5, 2020
    Date of Patent: February 2, 2021
    Assignee: FLUID EQUIPMENT DEVELOPMENT COMPANY, LLC
    Inventors: Eli Oklejas, Jr., Michael Anthony Gisclair
  • Patent number: 10898858
    Abstract: The present invention provides a membrane distillation apparatus that comprises an evaporation part comprising a liquid phase part 1 in which water to be treated flows, a gas phase part 1, and a hydrophobic porous membrane that separates the liquid phase part 1 and the gas phase part 1, a condensation part comprising a liquid phase part 2 in which cooling water flows, a gas phase part 2, and a cooling member that separates the liquid phase part 2 and the gas phase part 2, and a gas phase part 3 connecting the gas phase part 1 with the gas phase part 2, wherein the pressure of the gas phase parts 1 to 3 is 1 kPa or higher and the saturated steam pressure of water at the temperature of water to be treated or lower.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: January 26, 2021
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Kazuto Nagata, Hiroyuki Arai