Patents Examined by Pranav Patel
  • Patent number: 9914077
    Abstract: An end member (3A) for a spiral separation membrane element includes: an inner annular portion (31); an outer annular portion (32) surrounding the inner annular portion (31) at a distance from the inner annular portion (31); a plurality of connecting portions (33) connecting the inner annular portion (31) and the outer annular portion (32); and a shield plate (34) disposed between at least one pair of the connecting portions (33) and forming an opening (41) between the shield plate (34) and the outer annular portion (32). According to this configuration, a radially outwardly spreading flow is formed by the shield plate (34), and therefore suspended solids in a feed liquid can be effectively directed to the peripheral region.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 13, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Shinichi Chikura, Yasuhiro Uda, Toshimitsu Hamada
  • Patent number: 9901878
    Abstract: A membrane separation device includes a separation membrane unit A that has a separation membrane unit component 8, feed stream side lines F1 and F2, and a permeate stream line P, and a unit for feeding a stream-to-be-treated, wherein a stream-to-be-treated sealing material is provided in the perimeter of an anti-telescoping plate of the separation membrane element, wherein the separation membrane elements can be moved within a cylindrical pressure vessel substantially in either direction, wherein the separation membrane unit is configured to feed the stream-to-be-treated through one of the feed stream side lines F1 and F2 and to discharge the concentrate stream through the other of the feed stream side lines, and wherein the separation membrane unit includes a mechanism that can switch the flow between the feed stream side lines.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 27, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Masahide Taniguchi, Kazunori Tomioka, Tomohiro Maeda
  • Patent number: 9889393
    Abstract: A plurality of hollow filter sheets have a suction pipe inserted therethrough to be stacked with a ring-shaped packing clamped therebetween. Therefore, a gap between the hollow filter sheet and the suction pipe is watertightly sealed. In the hollow filter sheet, a hollow portion is provided between two filters, and then a spacer with a surface having pits and projections is provided in the hollow portion. A narrow passage space allowing liquid to pass through is provided between the filter and the spacer by pressing the two filters against surfaces of the spacer with the packings and causing the filters to be deformed into a shape according to the surfaces of the spacer. The narrow passage space is smaller than a drainage space between the filters and the spacer that are not clamped by the packings.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: February 13, 2018
    Assignee: AWA PAPER MFG. CO., LTD.
    Inventors: Koichi Nakagawa, Kosuke Tsuda
  • Patent number: 9889411
    Abstract: Provided is a nonwoven fabric for semipermeable membrane support, in which adhesiveness of a semipermeable membrane to a support is satisfactory, the thickness uniformity of the semipermeable membrane is satisfactory, and permeation-through of a coating liquid does not occur.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: February 13, 2018
    Assignee: HOKUETSU KISHU PAPER CO., LTD.
    Inventors: Toshihiko Soyama, Junji Nemoto, Hisashi Hamabe
  • Patent number: 9868091
    Abstract: A transverse-mounted membrane filtration apparatus includes an air diffuser device including a shelf-shaped member and a gas-feeding unit, the shelf-shaped member including a plurality of shelf boards being arranged in a flow path segment at an immediate upstream of an end surface of a membrane element with a predetermined distance from the end surface of the membrane element and covering an entire flow path of the membrane element along a vertical direction, the gas-feeding unit feeding a gas to the raw water for washing the membrane element through a gas-feeding port provided at a bottom portion of a flow path of the shelf-shaped member. Herein a shelf board at a lowermost position of the shelf-shaped member is inclined toward a side of the end surface of the membrane element in a vertically upper direction.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: January 16, 2018
    Assignee: Metawater Co., Ltd.
    Inventors: Junpei Tsukamoto, Shinichi Sakata
  • Patent number: 9808766
    Abstract: Disclosed are a pressurized-type hollow fiber membrane module having a pressure resistance higher than 3 kgf/cm2 and a filtration system comprising the same. The pressurized-type hollow fiber membrane module comprises: a body case having an open end; a fixing member disposed in the body case at the open end; a hollow fiber membrane potted in the fixing member; and a cap on the open end of the body case, the cap and fixing member forming a filtrate-collecting space, wherein a lumen of the hollow fiber membrane is in fluid communication with the filtrate-collecting space, the fixing member has a step so that an upper side surface of the fixing member is not in contact with an inner surface of the body case, and a portion of the cap is inserted in a groove defined by the step of the fixing member and the inner surface of the body case.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: November 7, 2017
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Ah Reum Lee, Yong-Cheol Shin, Heewan Moon
  • Patent number: 9802842
    Abstract: A hollow fiber membrane module comprising a bundle of hollow fiber membranes, a housing, an adhesive fixation layer, an inlet and outlet, at least one bias regulating member, and at least one straightening cylinder, in which the bias regulating member is contained in the adhesive fixation layer, the adhesive fixation layer comprises an outer end surface and an inner end surface inside the straightening cylinder, at least some of spaces between the hollow fiber membranes are at least three times as large as an outer diameter of the hollow fiber membrane on the outer end surface of the adhesive fixation layer, and the spaces between the hollow fiber membranes and a space from the hollow fiber membranes to the straightening cylinder are all less than three times as large as the outer diameter of the hollow fiber membrane on the inner end surface of the adhesive fixation layer.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: October 31, 2017
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventor: Satoshi Shiki
  • Patent number: 9802143
    Abstract: A ceramic filter is provided with a porous substrate 3 “made of ceramic and having partition walls 1 separating and forming a plurality of cells 2 extending from one end face 11 to the other end face 12”, a separation membrane 21 “made of ceramic and disposed on wall surfaces of the cells 2”, and glass seals 31 disposed on the one end face 11 and on the other end face 12 “so as not to cover openings of the cells 2”. Ceramic particles having a thermal expansion coefficient of 90 to 110% of that of glass contained in the glass seals 31 are dispersed in the glass seals 31. There is provided a ceramic filter usable for a long period of time in high temperature conditions.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: October 31, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Makoto Teranishi, Hideyuki Suzuki, Manabu Isomura
  • Patent number: 9802161
    Abstract: Fluid treatment assemblies may include first and second end pieces, at least one fluid treatment unit positioned between the first and second end pieces, and a retainer extending between the first and second end pieces and arranged to press the fluid treatment unit(s) and the first and second end pieces together. Each of the end pieces is formed from a nonmetallic material and has a flexural modulus of at least about 1.5×106 psi.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 31, 2017
    Assignee: PALL CORPORATION
    Inventors: Cheryl Sayer, Sylvia Messier, James Covino
  • Patent number: 9795922
    Abstract: A hyperfiltration system (10) and method for treating water including: a vessel (20) having a feed inlet (22), a permeate outlet (24), and a concentrate outlet (26); at least one spiral wound membrane element (28) located within the vessel (20); a pump (30) having a low pressure side (32) in fluid communication with a source of feed water (40) through a junction point (42) and a high pressure side (34) in fluid communication with the feed inlet (22); a permeate valve (50) connected to the permeate outlet (24) and adapted to selectively direct permeate flow between a treated water outlet (52) and the junction point (42); a flow path (60) between the concentrate outlet (26) and a discharge (62); and a flow restrictor (64) located along the flow path (60) and adapted to vary resistance to concentrate flow between a high and low value.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: October 24, 2017
    Assignee: Dow Global Technologies LLC
    Inventor: Steven D. Jons
  • Patent number: 9795925
    Abstract: A membrane separation unit can include a cartridge, at least one membrane disposed within the cartridge, at least one seal plate, and a sealing ring seated in an outer groove of the seal plate. The at least one seal plate can seal one end of the cartridge. The seal plate can have at least one venting hole that forms a passage between the interior of the cartridge and the outer groove. The sealing ring can have a cross-sectional shape that forms a circular venting path between the sealing ring and the seal plate. The sealing ring can include one or more grooves to allow fluid to vent into an annular space between a device housing and the membrane separation unit. The sealing ring can include an outer surface having, in cross-section, two flattened surfaces that form an angle of between 90° and 175° there between.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 24, 2017
    Assignee: LG NANOH20, INC.
    Inventors: Frederick K. Lesan, Nicholas Kordani
  • Patent number: 9796608
    Abstract: Plant for desalinating water of a water supply system, which comprises one or more tanks for accumulating water (2) in an immiscible manner, in order to store a softened supply thereof, provided with a first inlet connection (3) and with a first outlet connection (4) respectively connected to a feeding pipe (5) connected to the water supply system (50) and to an extraction pipe (6) for supplying users. The plant (1) also comprises a filtering unit (10) for water softening, for example obtained with a flow-through condenser (10?) or with a reverse osmosis membrane filter (10?), connected in parallel to the tank (2) with second inlet connection (11) and second outlet connection (12) respectively hydraulically connected to the first inlet connection (3) and to the first outlet connection (4) of the tank (2).
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: October 24, 2017
    Assignee: IDROPAN DELL'ORTO DEPURATORI S.R.L.
    Inventor: Tullio Servida
  • Patent number: 9795926
    Abstract: Disclosed is an aeration unit capable of cleaning all the hollow fiber membranes in a filtering apparatus sufficiently and uniformly thereby improving the filtration efficiency and a filtering apparatus comprising the same. An aeration unit of the present invention comprises a plurality of aeration tubes parallel to each other, each of the aeration tubes comprising a first end and a second end opposite the first end; and a first common pipe in fluid communication with the aeration tubes through the first ends of the aeration tubes to provide the aeration tubes with air. The first common pipe is perpendicular to the aeration tubes. The closer to both ends of the first common pipe the aeration tubes are, the more densely the aeration tubes are arranged.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: October 24, 2017
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Heewan Moon, Ji-hyun Jung
  • Patent number: 9795921
    Abstract: A fluid treatment assembly comprises one or more cross flow fluid treatment units positioned between opposite end pieces. The fluid treatment unit includes a permeable fluid treatment medium having a feed side and a permeate side. The fluid treatment assembly further comprises a feed inlet and feed passage, a permeate outlet and a permeate passage, and a retentate outlet and a retentate passage. The feed passage directs feed fluid from the feed inlet to the permeable medium and tangentially along the feed side of the permeable medium. The permeate passage directs permeate from the permeate side of the permeable medium to the permeate outlet. The retentate passage directs retentate from the feed side of the permeable medium to the retentate outlet. A flow restrictor is positioned in the retentate passage.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 24, 2017
    Assignee: PALL CORPORATION
    Inventors: Steven Pearl, Cheryl Sayer, Sylvia Messier
  • Patent number: 9795932
    Abstract: The purpose of the present invention is to provide a porous hollow fiber membrane that can efficiently separate and remove the substances to be removed such as small-particle virus contained in a solution and, at the same time, useful recovering substances such as protein can be efficiently permeated and the decrease of its transmission rate with elapse of time is small. The porous hollow fiber membrane of the present invention is characterized in that the filtration downstream surface thereof has dot-shaped or slit-shaped pores, the filtration upstream surface thereof is a network structure or a fine particle aggregate structure, the central region of the membrane is composed of a substantially homogeneous structure, the membrane wall is composed of a structure having substantially no macrovoids, the permeability for pure water is 10 to 300 L/(h·m2·bar) and the permeability for a 0.1% by weight solution of bovine ?-globulin is 30 to 100% of the permeability for pure water.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: October 24, 2017
    Assignee: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Hideyuki Yokota, Noriaki Kato, Hirofumi Ogawa, Junsuke Morita
  • Patent number: 9795923
    Abstract: A cartridge type hollow fiber membrane module includes: a cartridge type hollow fiber membrane element including a hollow fiber membrane bundle, a distribution cylinder, and an adhesive resin portion; a module case including a module case main body portion which has at least one port corresponding to a supply outlet of filtrate or an undiluted solution on a side surface, and a header which has a port corresponding to a supply outlet of filtrate or an undiluted solution, and accommodating the cartridge type hollow fiber membrane element; a first sealing member disposed to come into contact with the distribution cylinder and the header on an external side of a boundary surface between the supporting portion and the adhesive resin portion; and a second sealing member disposed to come into contact with an outer circumference portion of the distribution cylinder and the module case main body portion.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: October 24, 2017
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Hayato Inuzuka, Kohei Fujii, Norihiro Takeuchi, Atsushi Kobayashi, Takashi Mimitsuka
  • Patent number: 9796607
    Abstract: Disclosed herein are systems and methods for desalination of salt water based on an engineered acoustic field that causes constructive and destructive interference at precomputed spatial positions. The engineered acoustic field can cause high-pressure and low-pressure regions where desalination membranes are located. The induced pressure from the acoustic field can force pure water through the membranes leaving ionic and dissolved molecular species behind.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: October 24, 2017
    Assignee: FloDesign Sonics, Inc.
    Inventors: Edward A. Rietman, Bart Lipkens
  • Patent number: 9795904
    Abstract: A filtering membrane module and a filtering apparatus having the same, which is capable of remarkably reducing a vibration of filtering membrane module during an aeration process for a maintenance cleaning of filtering membrane, and preventing a crack from occurring in the filtering membrane module by the vibration, wherein the filtering membrane module comprises a filtering membrane; a header, to which the filtering membrane is potted, including a first lateral side and a second lateral side opposite to the first lateral side; a first coupling unit provided at the first lateral side; and a second coupling unit provided at the second lateral side.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: October 24, 2017
    Assignee: KOLON GLOBAL CORPORATION
    Inventors: Moon Sun Kang, Chang-Hyo Ahn, Geon Tae Kim, Hee-Deung Park
  • Patent number: 9795924
    Abstract: In one embodiment, the present invention provides a central core element for a reverse osmosis separator assembly, the central core element comprising a pair of central core element components, each of said core element components comprising at least one porous exhaust conduit and at least one friction coupling, the friction couplings being configured to join said core element components to form a central core element defining a cavity configured to accommodate a first portion of a membrane stack assembly; wherein each core element component comprises a first section defining an exhaust cavity and a second section comprising a porous exhaust conduit, wherein said porous exhaust conduit comprises a removable wall member configured to form a substantial portion of a porous exhaust conduit wall.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 24, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jonathan Sebastian Janssen, Philip Paul Beauchamp, Todd Alan Anderson, Mohammed Mounir Mahmoud Shalaby, Wenpeng Liu, Anubhav Kumar
  • Patent number: 9656883
    Abstract: The invention relates to a system for separating a product contained as solvent in a solution to be processed, comprising at least one forward osmosis device (816) through which the solution to be processed and a draw solution flow, and a device connected downstream thereof for obtaining the product (56, 62) from the diluted draw solution exiting the forward osmosis device, wherein the forward osmosis device comprises at least one flow channel conducting the solution to be processed and at least one flow channel conducting the draw solution, the inner space of a respective flow channel conducting the solution to be processed is delimited at least partially by a semi-permeable membrane wall that is permeable to the solvent of the solution to be processed but not to the substance dissolved therein, and at least one flow channel conducting the draw solution is delimited on opposite sides by membrane walls that are associated with two adjoining flow channels conducting the solution to be processed, such that solv
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: May 23, 2017
    Assignee: AAA WATER TECHNOLOGIES AG
    Inventor: Wolfgang Heinzl