Planar Membrane Patents (Class 210/321.84)
  • Patent number: 10463994
    Abstract: A diffusiophoretic water filtration device includes a diffusiophoretic flow chamber having an inlet and an outlet, the flow chamber for receiving the colloidal suspension at the inlet from the inlet manifold, and passing the colloidal suspension between the inlet and at least one outlet in a flow direction; the flow chamber having a removable and reassemblable cover defining a boundary of the diffusiophoretic flow chamber.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: November 5, 2019
    Assignee: Split Rock Filter Systems LLC
    Inventor: William Christian Gehris
  • Patent number: 10427105
    Abstract: The invention relates to a filter device (10) serving to filter a liquid, in particular for treating water. The filter device comprises: at least two plate-shaped filter elements (12) and at least one holding element (20) for filter elements (12). According to the invention, the holding element (20) comprises a holding frame (22), a grout material (26), and an end unit (24), which is separate from the holding frame (22), wherein the grout material (26) is arranged between the filter elements (12) and the holding frame (22), such that the grout material seals the filter elements (12) against the holding frame (22), that the end unit (24) is fastened on the holding frame (22) in a liquid-tight manner, and that the holding frame (22) and the end unit (24) delimit a liquid collection chamber (40).
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 1, 2019
    Assignee: Nanostone Water Inc.
    Inventors: Thomas Blanke, Bernd Koecher, Daniel Ahlers, Dagmar Wolff, Christopher James Kurth, Christian Goebbert
  • Patent number: 10399041
    Abstract: The antimicrobial agent includes at least one two-dimensional metal carbide layer. The two-dimensional metal carbide has the formula Tin+1CnTx, where T represents a terminal functional group and x represents the number of terminal functional groups. The two-dimensional metal carbide is preferably Ti3C2Tx. The terminating group may be oxygen, hydroxide (OH), fluorine or combinations thereof. The antimicrobial agent may be used as a two-dimensional metal carbide antimicrobial membrane (10) or filter for removal of harmful bacteria, such as E. coli and B. subtilis. A stack of two-dimensional metal carbide layers (14) may be supported on a polymer filter substrate (12), such as a polyvinylidene fluoride (PVDF) supporting substrate.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 3, 2019
    Assignee: Qatar Foundation for Education, Science and Community Development
    Inventors: Kashif Rasool, Khaled Ahmed Mahmoud
  • Patent number: 10199469
    Abstract: A semiconductor device includes a silicon semiconductor layer including at least one region doped with a first conductive type dopant, a metal material layer electrically connected to the doped region, and a self-assembled monolayer (SAM) between the doped region and the metal material layer, the SAM forming a molecular dipole on an interface of the silicon semiconductor layer in a direction of reducing a Schottky barrier height (SBH).
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: February 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seunggeol Nam, Hyeonjin Shin, Yeonchoo Cho, Minhyun Lee, Changhyun Kim, Seongjun Park
  • Patent number: 10098682
    Abstract: A high pressure bone cement delivery device includes a delivery adapter having an input port, an output port and cavity having bone cement disposed therein. A pressure intensifier is coupled to the delivery adapter and includes a first chamber containing a gas, a second chamber containing a fluid. The pressure intensifier includes a piston having a first end movably disposed within the first chamber and a second end movably disposed in the second chamber. The pressure intensifier includes a second output port in communication with the second chamber and the input port. The first end of the piston includes a first end surface having a first surface area and the second end of the piston comprises a second end surface having a second surface area that is less than the first surface area. Methods of use are disclosed.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: October 16, 2018
    Assignee: Medtronic Holding Company Sárl
    Inventors: Neil S. Sasaki, Michael A. Smith
  • Patent number: 10086317
    Abstract: A method comprises forming etching islands on a substrate and exposing the substrate with etching islands to a solution that reacts with the etching islands to form a filter passage of interconnected pores in the substrate. The filter passage has an inlet into the substrate and an outlet from the substrate.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: October 2, 2018
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Roger A. McKay, Patrick W. Sadik
  • Patent number: 9962698
    Abstract: A microfluidic system includes a microfluidic device connected to a bubble trap device whereby fluid flowing to the microfluidic device passes through the bubble trap device to remove gas bubbles prior to entering the microfluidic device. The bubble trap can include a separation chamber and an exhaust chamber separated by a hydrophobic porous membrane and gas bubbles in the fluid entering the separation chamber pass through the hydrophobic porous membrane into the exhaust chamber while the fluid remains in the separation chamber. The bubble trap can be formed by bonding a first body portion to a first side of the hydrophobic porous membrane and bonding a second body portion to a second side of the hydrophobic porous membrane. The exhaust chamber can be connected to an elongated exhaust channel that limits the evaporation losses of the fluid through the hydrophobic porous membrane.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: May 8, 2018
    Assignee: President and Fellows of Harvard College
    Inventors: Donald E. Ingber, Geraldine A. Hamilton, Daniel Levner, Christopher Hinojosa, Daniel Patterson
  • Patent number: 9789235
    Abstract: Described are devices, methods, and kits for controlled incremental filtration (CIF), as well as methods of designing CIF devices. For example, a method for CIF may modulate a concentration of particles of a desired size in a fluid. The fluid including the particles may be flowed along a flow path through a central channel to contact a plurality of gaps that fluidically couple the central channel to at least one adjacent side channel network. Flow resistance may be decreased along at least a portion of the flow path effective to modulate the concentration of particles. The method may include selecting the plurality of gaps to be larger than the particles. The method may include causing a consistent flow fraction fgap in the central channel to traverse each gap in the plurality of gaps and flow through the at least one side channel network along the flow path.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: October 17, 2017
    Assignees: THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND, HALCYON BIOMEDICAL, INCORPORATED
    Inventors: Sean C. Gifford, Sergey S. Shevkoplyas
  • Patent number: 9738543
    Abstract: Described herein are devices for providing drinking fluid from feed sources comprising: a first reservoir, a filter for mechanically removing particles and a second reservoir for receipt of the processed feed fluid. A continually disinfecting element is disposed in either or both reservoirs to remove additional materials from the fluid. Drinking fluid is provided in a portable device. Optional light sources are provided to interact with the disinfecting elements and/or provide an indication of the contained suitability of such disinfecting elements. A method for creating drinking fluid from a feed source is also disclosed.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: August 22, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Rajesh Mukherjee, Benjamin M. Weaver, Tao Gu, Jiadong Zhou, Bin Zhang
  • Patent number: 9731229
    Abstract: A filtering element for the filtration of a fluid medium comprises a rigid porous support of cylindrical shape having a longitudinal central axis (A) and a plurality of channels for the circulation of the fluid medium to be filtered and collection of filtrate on the periphery of the support. The channels are arranged in the support parallel to its central axis central (A) and define at least three filtering zones which are distributed concentrically and separated from each other by a continuous porous zone. The mean thickness of the porous zone (Z1) closest to the central axis (A) is smaller than the mean thickness of the porous zone (Zn-1) the closest to the periphery of the support (1) and, in the direction moving away from the central axis (A) of the support towards its periphery, the mean thickness of a porous zone is either identical to the next or smaller.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: August 15, 2017
    Assignee: TECHNOLOGIES AVANCEES ET MEMBRANES INDUSTRIELLES
    Inventor: Philippe Lescoche
  • Patent number: 9718714
    Abstract: A separation-membrane module 1 includes an element block 2 that is formed by arranging, in parallel, a plurality of separation-membrane elements 4 that are formed by arranging a pair of separation-membranes with their respective permeate surfaces in opposition to each other and sealing the edges of the pair of the membranes; and an aeration block 3 that includes an aeration pipe 31 and that is disposed under the element block 2. In the element block 2, at least one upper spacer 8 is disposed in the upper portion of each space between the adjacent separation-membrane elements 4, and a lower spacer 9 is disposed under the upper spacer 8 in each space between the adjacent separation-membrane elements 4. And the leftmost and the rightmost separation-membrane elements 4 of the plurality of the separation-membrane elements 4 are secured to a frame 12 at the lower spacers 9.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 1, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Hideaki Ando, Yoshifumi Odaka, Yasuharu Watanabe
  • Patent number: 9709492
    Abstract: A filter press having a plurality of stackable filter plate assemblies comprises at least one turbidity sensing module [20, 220, 320, 420] coupled to a first filter plate assembly [1] within the plurality of stackable filter plate assemblies. The turbidity sensing module [20, 220, 320, 420] is generally positioned between a filtrate drain opening [8a-d] communicating with a filter chamber [14], and either a filtrate port [7, 13] or filtrate discharge tube [4g, 15], in order to determine a level of turbidity of filtrate [50] exiting said first filter plate assembly. Turbidity levels may be determined independently of turbidity levels of filtrate [50] exiting other filter plate assemblies [1] within the filter press. When turbidity levels reach a predetermined threshold, and alarm [80] is activated, which informs an operator of the need to replace a filter cloth associated with the affected filter plate assembly [1].
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: July 18, 2017
    Assignee: FLSMIDTH A/S
    Inventors: Mike Phillips, Flemming Jørgensen, Robert Singer, Anders Fougner, Alexander Helm
  • Patent number: 9636635
    Abstract: An example separation system includes a stack of membrane plate assemblies. An example membrane plate assembly may include membranes bonded to opposite sides of a spacer plate. The spacer plate may include a first opening in fluid communication with a region between the membranes, and a second opening in fluid communication with a region between membrane plate assemblies. Adjacent membrane plate assemblies in the stack may have alternating orientations such that bonding areas for adjacent membranes in the stack may be staggered. Accordingly, two isolated flows may be provided which may be orthogonal from one another.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 2, 2017
    Assignee: Porifera, Inc.
    Inventors: Charles Benton, Olgica Bakajin
  • Patent number: 9574977
    Abstract: Highly efficient and rapid filtration-based concentration devices, systems and methods are disclosed with sample fluidic lines and a filter packaged in a disposable tip which concentrate biological particles that are suspended in liquid from a dilute feed suspension. A sample concentrate or retentate suspension is retained while eliminating the separated fluid in a separate flow stream. The concentrate is then dispensed from the disposable tip in a set volume of elution fluid. Suspended biological particles include such materials as proteins/toxins, viruses, DNA, and/or bacteria in the size range of approximately 0.001 micron to 20 microns diameter. Concentration of these particles is advantageous for detection of target particles in a dilute suspension, because concentrating them into a small volume makes them easier to detect. A single-use pipette tip includes fluid ports for aspirating the sample and connecting to a concentrating unit.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 21, 2017
    Assignee: INNOVA PREP
    Inventors: Andrew Edward Page, Zachary A. Packingham, David Scott Alburty, Alec D. Adolphson
  • Patent number: 9546991
    Abstract: Disclosed herein are devices for assessing drug dissolution, absorption and permeation, the devices comprising a chamber, a permeability barrier, and a securing cap, each in fluid communication with each other. The chamber comprises a reservoir and an extension. The permeability barrier is configured to hold cells, tissues, or artificial membranes, and the securing cap is configured to reversibly attach to the permeability barrier or the extension of the chamber. Also provided are systems for assessing drug dissolution, absorption and permeation, the systems comprising at least one of the devices for assessing drug dissolution, absorption and permeation, a dissolution vessel configured to hold a dissolution medium, and a stirring apparatus within the dissolution vessel. Methods for concomitant measuring of dissolution, absorption and/or permeation of a drug are also provided.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: January 17, 2017
    Assignee: Absorption Systems Group, LLC
    Inventors: Jibin Li, Ismael J. Hidalgo
  • Patent number: 9234882
    Abstract: By driving molecules electrophoretically through a nanopore, single molecule detection can be achieved. To enhance translocational control, functionalized and non-functionalized electrodes are strategically placed around or above a nanopore. Changes in transmission spectra and input voltage detected by electrodes allow accurate identification of single molecules as they pass through a nanopore.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: January 12, 2016
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Andres Jaramillo-Botero, William A. Goddard, III
  • Patent number: 9194771
    Abstract: A passive diffusion sampler and kit that includes a passive diffusion sample bag comprising a regenerated cellulose membrane to allow for sampling of a broad spectrum of contaminants and VOCs. The sample bag is disposed in a rigid housing which protects the bag from tearing and also allows the housing to be inverted to suspend the bag upside down and provide a user access to a fluid outlet means on the bag for withdrawing a sample from the bag without agitating the sample.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 24, 2015
    Inventor: Craig Intelisano
  • Patent number: 9180239
    Abstract: A device and method for oxygenating blood is disclosed herein. The device includes a plurality of passive mixing elements that causes a fluid to mix as it flows through the device. The passive mixing elements continually expose new red blood cells to the portion of the flow channel where oxygenation can occur. Accordingly, in some implementations, the device and method uses less blood to prime the device and allows for the oxygenation of blood with a substantial shorter flow channel when compared to conventional oxygenation methods and devices.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 10, 2015
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Jeffrey T. Borenstein, Joseph L. Charest, James C. Hsiao, Tatiana Kniazeva, Ernest S. Kim, Alla Epshteyn, Vijaya Kolachalama
  • Patent number: 9022225
    Abstract: Provided is a filtration filer with which a stable opening size during filtration is obtained, and which can be easily regenerated when clogged and used repeatedly. The filtration filter (10) comprises: a substrate stack wherein substrates (11) that have a through hole that penetrates from front to back are stacked; stoppers (15) that define the spacing between the substrates (11); and pillars (16) with a larger thermal expansion coefficient than the stoppers (15). The spacing between the substrates (11) at normal temperature is defined at least by the stoppers (15), and the spacing when heated is defined by the thermally expanded pillars (16). The gaps between the substrates (11) form the filtration surface that traps contaminants contained in the liquid that is being treated A.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 5, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Asao Yamashita
  • Publication number: 20150041127
    Abstract: Provided is an oil/water separation method that is capable of decreasing the frequency of clogging. The method is for separating oil and water from each other that are generated by an in-situ recovery method for producing bitumen 82 from oil sand (1500). After oil-containing water (83, 84) obtained as a result of the bitumen 82 being removed from a bitumen-mixed fluid 81 recovered from under the ground is prepared, the step of membrane-distilling the oil-containing water 84 by use of a distillation membrane member 10 formed of a porous membrane 20 is performed.
    Type: Application
    Filed: February 22, 2013
    Publication date: February 12, 2015
    Inventors: Nobuharu Kuki, Ryoichi Matsushima
  • Patent number: 8945385
    Abstract: The invention relates to a membrane filtration device comprising a plurality of planar membrane filter elements which are combined to form a membrane package and are disposed within the membrane package parallel to and spaced apart from one another. A wall encloses the membrane package on all sides, and within which at least one inlet chamber which is connected to at least one inlet, and at least one outlet chamber which is connected to at least one outlet. An oscillation unit is connected to the membrane package and the wall to induce oscillation in a direction parallel to the membrane filter elements. The oscillation unit is connected to a frame which encloses the membrane package and which is connected to the wall of the membrane package by means of least one spring, whose main direction of spring action extends parallel to the plane of the membrane filter.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: February 3, 2015
    Assignee: Big Dutchman International GmbH
    Inventors: Reinhold Wesselmann, Amin Schwarz
  • Patent number: 8945386
    Abstract: A membrane filtration apparatus includes a frame, in which a plurality of membrane members, an aeration device, a cleaning device, and a jet device are provided. The cleaning device includes a rail mounted on the frame; an up frame engaging the rail to be moved in the rail, a plurality of cleaning wires respectively having an end connected to the up frame and respectively passing through a space between each two of the neighboring membrane members; and a low frame connected to opposite ends of the cleaning wires. A motor is provided to move the up frame so that the cleaning wires are reciprocating in the space to scratch the sludge off the membrane members.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: February 3, 2015
    Inventor: Yung-Chuan Lee Wang
  • Patent number: 8936724
    Abstract: A filtration cartridge is provided comprising one or a stack of filtration units sealed to each other at their outer periphery and to end caps thereby eliminating the need for a housing surrounding the stack. Fluid pathways are provided so that filtration of all incoming feed is assured prior to passing from the cartridge as filtrate. Two permeate pathways are provided to direct permeate to an outlet from the filtration cartridge.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: January 20, 2015
    Assignee: EMD Millipore Corporation
    Inventor: Stephen G. Hunt
  • Patent number: 8919385
    Abstract: A manifold plate and a filtration arrangement including a manifold plate which comprises a body having a mounting region on the exterior of the body and first and second fluid channels extending within the body. The mounting region has at least one first opening and at least one second opening. At least one first fluid passageway fluidly couples the first opening to the first fluid channel and at least one second passageway fluidly couples the second opening to the second fluid channel. One or more filtration units may be mounted to the mounting region in fluid communication with the first and second openings of the manifold plate.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: December 30, 2014
    Assignee: Pall Corporation
    Inventors: Cheryl A. Sayer, Cristopher J. Petersen
  • Patent number: 8911624
    Abstract: A filtration cartridge (20) is provided comprising one or a stack of filtration units (26) sealed to each other at their inner periphery and to end caps (22, 24) eliminating the need for a housing surrounding the stack. Fluid pathways are provided so that filtration of all incoming feed is assured prior to passing from the cartridge as filtrate. The filtration cartridge can be provided with a single outlet (30).
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: December 16, 2014
    Assignee: EMD Millipore Corporation
    Inventor: Kevin Rautio
  • Patent number: 8905960
    Abstract: A device for the filtration of a complex fluid composition such as blood, includes a base (12) with a bottom (18), a top (14) with a bottom (30), and a membrane (16) that is arranged between the base and the top so as to define a low chamber C1 and a high chamber C2, with an input tap (26) of the complex composition that is to be filtered emptying into the low chamber C1, an output tap (28) of the retentate with elements for adjusting the flow rate emptying into this same low chamber C1, and an output tap (36, 36-1) of the high chamber C2, whereby this output tap (36, 36-1) of the permeate is subjected to negative pressure.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 9, 2014
    Assignee: Direction et Priorites
    Inventors: Francis Gadrat, Bertrand Chastenet
  • Patent number: 8889071
    Abstract: An apparatus for separating plasma by which plasma can be separated from a small amount of whole blood cell sample without centrifugation is disclosed. This apparatus includes a blood channel through which blood flows; and a plasma channel through which plasma separated from said blood flows. The plasma channel is arranged at least partially in parallel with said blood channel and the blood channel and the plasma channel are at least partially in contact with each other along the longitudinal direction of the channels. Blood is made to flow at a flow rate at which blood cell components in the blood flowing through the blood channel axially accumulate and at which hemolysis does not occur. The plasma moves to the plasma channel after being separated into a blood cell layer and a plasma layer.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: November 18, 2014
    Assignees: Institute of Microchemical Technology Co., Ltd., The University of Tokyo
    Inventors: Arata Aota, Takehiko Kitamori
  • Publication number: 20140251893
    Abstract: The present invention relates to a filtration means (10) for the filtration of liquid media having a housing (12) and at least one filter element (16) arranged in said housing (12), wherein at least one of said filter element (16) at at least one axial end has a laterally outwardly extending flange (24), which is connected to said housing (12) forming a seal. Said flange (24) has a conical surface (25) projecting outwardly which interacts with a complementary conical surface (27) of a gasket (26) which is arranged between said flange (24) and said housing (12).
    Type: Application
    Filed: August 2, 2012
    Publication date: September 11, 2014
    Applicant: KSM WATER GmbH
    Inventors: Christian Goebbert, Manfred Volz
  • Patent number: 8821726
    Abstract: A submerged membrane separator 31 includes: a casing 33 opened at the top; a plurality of flat membrane cartridges 34 arrayed at intervals in the casing 33; and an air diffuser 36 provided below the membrane cartridges 34. The membrane cartridges 34 are movably held in the up-down direction in the casing 33 while having a space ? in the up-down direction. Lifting suppressing members 63a and 63b for restricting a lifting amount of the membrane cartridges 34 during filtration operation to be smaller than the space ? in the up-down direction are provided in the casing 33.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: September 2, 2014
    Assignee: Kubota Corporation
    Inventors: Yoshio Matsuzaki, Tatsuya Uejima, Tomohiko Sasaki, Kimihiro Ishikawa
  • Patent number: 8815092
    Abstract: A microfiltration apparatus and method for separating cells, such as circulating tumor cells, from a sample using a microfiltration device having a top porous membrane and a bottom porous membrane. The porous membranes are formed from parylene and assembled using microfabrication techniques. The porous membranes are arranged so that the pores in the top membrane are offset from the pores in the bottom membrane.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: August 26, 2014
    Assignees: California Institute of Technology, University of Southern California
    Inventors: Siyang Zheng, Richard Cote, Henry Lin, Bo Lu, Yu-Chong Tai
  • Publication number: 20140231331
    Abstract: A system, method and device are disclosed for bio-processing a feed stream and providing a constant output by operating a continuous single-pass tangential-flow process. The single-pass process provides high conversion concentration while operating at relatively low feed flow rates, and the process can also be used to provide constant output diafiltration.
    Type: Application
    Filed: April 10, 2014
    Publication date: August 21, 2014
    Applicant: SPF INNOVATIONS, LLC
    Inventors: Gaston de los Reyes, Leon Mir
  • Patent number: 8808541
    Abstract: A dialysis cell is provided for the measurement of free thyroxine. The dialysis cell preferably includes a polyhedral housing including a top, a bottom and four sides. The dialysis cell is made up of a buffer portion and serum portion. The buffer portion includes a cavity and the serum portion includes a cavity which, when the buffer portion and serum portion are assembled together, form a central chamber. The central chamber is divided by a vertically aligned dialysis membrane held in place by two O-rings. Buffer is introduced into the dialysis cell's buffer portion through a buffer inlet extending from the dialysis cell's top side to the buffer portion's cavity. Similarly, serum is introduced into the serum portion through an inlet which extends from an opening formed on the dialysis cell's top to the serum portion's cavity.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: August 19, 2014
    Inventor: Marwan Nasralla
  • Publication number: 20140175011
    Abstract: An example separation system includes a stack of membrane plate assemblies. An example membrane plate assembly may include membranes bonded to opposite sides of a spacer plate. The spacer plate may include a first opening in fluid communication with a region between the membranes, and a second opening in fluid communication with a region between membrane plate assemblies. Adjacent membrane plate assemblies in the stack may have alternating orientations such that bonding areas for adjacent membranes in the stack may be staggered. Accordingly, two isolated flows may be provided which may be orthogonal from one another.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicant: PORIFERA, INC.
    Inventors: Charles Benton, Olgica Bakajin
  • Patent number: 8753509
    Abstract: Embodiments of the present invention relate to a filtration module and/or a novel method of making a frameless filtration module for water or wastewater treatment that can produce filtrate that is free of particles, reduce precipitated hardness, colloids and organic compounds. The designed apparatus, which is either encapsulated or in cassette form, can be assembled and disbanded easily to suit diverse process requirements. The module configuration and assembly also helps in clean-in-place, repair or replacement activities to be performed in situ.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: June 17, 2014
    Assignee: Aquatech International Corporation
    Inventors: Ravi Chidambaran, Pavan Raina, Sugata Das, Nitin Chandan
  • Patent number: 8747670
    Abstract: Filtration device suited for concentration of liquid samples, particularly biomolecules, and a method of concentrating, desalting, purifying and/or fractionating liquid samples. In certain embodiments the device includes a housing having a sample reservoir, and two substantially vertically oriented and spaced apart membranes disposed in the housing. An underdrain is associated with each membrane such that fluid passing through each membrane flows through a respective underdrain into a filtrate collection chamber. The fluid that does not pass through the membrane is collected in the retentate collection chamber, and can be recovered such as by a reverse spinning step, achieving recoveries greater than about 90%. The substantially vertical orientation of the membranes increases the available membrane area by at least 2.7 times the area available in a conventional filter device.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 10, 2014
    Assignee: EMD Millipore Corporation
    Inventors: Louis Bonhomme, John Doyle, Kurt Greenizen, George Gagne, Sean Devin, Gerard Lombard, Vincent Smith
  • Patent number: 8741141
    Abstract: The wall member of a water collecting case forms a projecting portion projecting to the outer side and recessed portions recessed to the inner side.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: June 3, 2014
    Assignee: Kubota Corporation
    Inventors: Hidetoshi Masutani, Yasunobu Okajima, Tomokazu Kitano
  • Patent number: 8728314
    Abstract: A membrane element is provided between a pair of water collecting cases. Water collecting spaces in which permeate having penetrated through the membrane element is collected are formed in the water collecting cases. The water collecting case of one membrane module and the water collecting case of the other membrane module are coupled via coupling portions. The coupling portions have flow holes. The water collecting space of the water collecting case of the one membrane module and the water collecting space of the water collecting case of the other membrane module communicate with each other via the flow holes of the coupling portions.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: May 20, 2014
    Assignee: Kubota Corporation
    Inventors: Hidetoshi Masutani, Yasunobu Okajima, Tomokazu Kitano
  • Patent number: 8727136
    Abstract: Method for producing this membrane from a casting solution comprising the hydrophobic first sulfone polymer and the hydrophilic second polymer in a solvent system, the method comprising the steps of pouring the casting solution, conditioned to a molding temperature, onto a carrier to form a film, which carrier has a temperature that is higher in comparison to the molding temperature, conveying the film through a climate-controlled zone, initiating the coagulation in a coagulation bath for the formation of a membrane structure, withdrawing the membrane structure from the carrier with a speed that is increased in comparison to the carrier speed, stabilizing, extracting, and subsequently drying the membrane.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: May 20, 2014
    Assignee: Membrana GmbH
    Inventors: Wolfgang Ansorge, Oliver Schuster, Friedbert Wechs, Klaus Dombrowski
  • Patent number: 8728316
    Abstract: A membrane filter unit includes a hollow fiber membrane module with a plurality of sheet-like hollow fiber membrane elements arrayed in parallel at predetermined intervals, each of the hollow fiber membrane elements obtained by arranging a great number of porous hollow fiber membranes in parallel, and an air diffuser arranged below the hollow fiber membrane module for releasing minute bubbles toward a lower end of the hollow fiber membrane module and generating a gas-liquid mixed flow vertically swirling between an inner space and an outer space of the hollow fiber membrane module. The membrane filter unit has a residue eliminating mechanism for forming a forced flow in part of the mixed flow between the porous hollow fiber membranes and between the sheet-like hollow fiber membrane elements of the fiber membrane module.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: May 20, 2014
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yoshihito Nakahara, Tetsuya Torichigai, Hiroyuki Okazaki
  • Patent number: 8709252
    Abstract: A filter unit for treating water includes at least two ceramic filter membranes; and a mount for the at least two ceramic filter membranes, wherein the ceramic filter membranes are formed in the shape of plates and each have a filter-active outer side and at least one internally lying discharge channel for filtered water, the mount has a collection space, via which water leaving the discharge channels can be drained, and the mount has at least two sockets that liquid-tight fix the at least two ceramic filter membranes in which they are fixed so that the internally lying discharge channels are in communicating connection with the collection space and at least the part of the mount having the sockets for the ceramic filter membranes is a shaped part formed in one piece.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: April 29, 2014
    Assignee: ItN Nanovation AG
    Inventors: Kay Gabriel, Christof Gränitz
  • Patent number: 8702995
    Abstract: A container for releasing a microbiocide component into a liquid composition susceptible to unwanted microbial growth (LCMG) includes a LCMG impermeable casing separate and apart from an internal combustion engine filter housing, and having a hollow interior and at least one opening. A microbiocide component, for example, at least one LCMG-soluble microbiocide, as the only active material located in the hollow interior. At least one liquid permeable element, for example, a membrane member, is provided at or near an opening in the casing and is effective to provide for release of microbiocide component into the LCMG. Methods of releasing microbiocide component into LCMGs are also provided.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: April 22, 2014
    Assignee: Dober Chemical Corp.
    Inventors: Dennis R. Kelly, David Alan Little, Magesh Sundaram
  • Patent number: 8679336
    Abstract: A microchannel device is provided, the microchannel device containing a microfluidic channel including a sub fluidic channel in which at least one filtration diaphragm is provided, wherein the microfluidic channel has at least a supply port, a first discharge port and a second discharge port, the supply port and the first discharge port are connected through the filtration diaphragm, the supply port and the second discharge port are connected without the filtration diaphragm, and the filtration diaphragm is provided parallel to a fluidic channel direction of the microfluidic channel.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: March 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuya Hongo, Takayuki Yamada, Seiichi Takagi, Hiroshi Kojima, Masaki Hirota, Kazuaki Tabata, Tetsuo Ohta
  • Patent number: 8663463
    Abstract: A vent assembly is described for use in an extracorporeal fluid unit. A vent structure adjacent to a micro-porous membrane forms the assembly. The vent structure is porous and changes color when the vent structure becomes wet, thereby providing a visual indication that the vent structure has been exposed to liquid.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: March 4, 2014
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Colin Weaver, Martin Joseph Crnkovich, Michael Emmanuel Kotsos, John Marion Frazer
  • Patent number: 8647507
    Abstract: Disclosed is a membrane cartridge used in a submerged membrane separator. A peripheral portion of a filtration membrane is joined to the surface of a filtration plate. A portion higher than the surface of the filtration plate corresponding to the peripheral edge of the filtration membrane is formed on the surface of the filtration plate further on the outer side than the peripheral edge of the filtration membrane.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: February 11, 2014
    Assignee: Kubota Corporation
    Inventors: Tatsuya Uejima, Yoshio Matsuzaki, Tomohiko Sasaki, Kimihiro Ishikawa
  • Patent number: 8623211
    Abstract: A filtering and condensing apparatus of a suction type includes: a sludge tank for containing sludge to be filtered and condensed; a plurality of filtering plates aligned with each other so as to be disposed to be adjacent to each other in the sludge tank; a means for constantly applying a tension force to each of the filtering plates, which means is disposed to be over a periphery of each filtering plate. A filtering cloth of each filtering plate is divided in the lateral direction by a plurality of vertically extending seams to form multiple divided zones, in each of which zone a filtering chamber is formed. A weight member is attached to a lower portion of each filtering plate using a U-shaped body.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: January 7, 2014
    Assignee: Metawater Co., Ltd.
    Inventors: Hiroyasu Yamane, Tadashi Kunitani, Eiji Sakai
  • Patent number: 8608964
    Abstract: A spiral reverse osmosis membrane element that improves impregnation property of a sealing resin at edges of a membrane leaf and can effectively prevent micro-leaks. The spiral reverse osmosis membrane element comprises a cylindrically wound body comprising a perforated core tube and, spirally wound therearound, a separation membrane, a feed-side passage material and a permeation-side passage material in a laminated state, and a sealing portion for preventing a feed-side liquid and a permeation-side liquid from being mixed together, wherein the separation membrane facing the permeation-side passage material has a structure that a porous support and a skin layer are successively laminated on a non-woven fabric layer, and the sealing portion sealed with a sealing resin is provided at the edges of the separation membrane, wherein the separation membrane is impregnated with the sealing resin at least up to the vicinity of the skin layer through the porous support.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: December 17, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Atsushi Hiro, Hiroki Fujioka, Atsuhito Koumoto
  • Patent number: 8602223
    Abstract: The invention relates to a micro-porous membrane comprising a porous membrane carrier made of a first polymeric material (A) and comprising a second polymeric material (B) intimately divided throughout the porous membrane carrier, wherein the porous membrane carrier comprises a plurality of interconnected polymeric fibers, fibrils, filaments and/or lamellae having a thickness of less than 1 ?m, the porous membrane carrier has an interconnected open porous structure formed by the plurality of interconnected polymeric fibers, fibrils, filaments and/or lamellae and a porosity of at least 50%; and the polymeric material (B) comprises a thermoplastic polycondensation polymer and is present in an amount of at most 30 wt. %, relative to the total weight of (A) and (B).
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: December 10, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Jun Qiu, Rudy Rulkens, Johannes L. M. OP Den Kamp, Jens C Thies
  • Patent number: 8603219
    Abstract: A gas separation unit 102, 200, 300 for permeating a gas out from a pressurized feed mixture includes an input manifold 104, 204, an exhaust manifold, 106, 206 and a permeate assembly 108, 208, 303. The permeate assembly supports one or more permselective foils 130, 132, 218, 232, 318 over a hollow cavity 134, 272, 306 supported by a microscreen element 142, 144, 228, 230, 326. The microscreen element includes non-porous perimeter walls 190, 192, 278 supported on a frame surface and a porous central area 194, 280 supported over the hollow cavity. A porous spacer 138, 140, 174, 234 disposed inside the hollow cavity structurally supports the entire microscreen surface spanning the hollow cavity while also providing a void volume for receiving fluid passing through the porous central area and for conveying the fluid through the hollow cavity.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: December 10, 2013
    Assignee: Protonex Technology Corporation
    Inventors: David Edlund, Paul Osenar, Nathan Palumbo, Ronald Rezac, Matthew P. Steinbroner
  • Patent number: 8591747
    Abstract: Containers for controlled release of an additive composition into a liquid composition include a liquid impermeable casing having a hollow interior, at least one opening and a membrane component secured to the casing. Methods of releasing additive compositions into liquid compositions are also provided.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: November 26, 2013
    Assignee: Dober Chemical Corp.
    Inventors: David Alan Little, Magesh Sundaram
  • Publication number: 20130299412
    Abstract: A membrane separation device includes a plurality of membrane elements each having a separation membrane arranged on front and back sides of a flat filter plate, wherein the membrane elements are oriented vertically and arranged in an array separated by a fixed distance such that the separation membranes are facing one another. A narrowing member is provided outside of the membrane element arranged at the outermost position along the arrangement direction, the narrowing member being disposed at least in a vicinity of a bonding portion of the filter plate and the separation membrane along the vertical direction thereof so as to be separated from the outermost membrane element by a predetermined distance smaller than the fixed distance T, thereby avoiding rupture of the separation membrane provided on outer side of the outermost membrane element even if aeration is continued in a state in which the filtering operation is stopped.
    Type: Application
    Filed: July 17, 2013
    Publication date: November 14, 2013
    Inventors: Hidetoshi MASUTANI, Yasunobu OKAJIMA