Alkene Other Than Vinyl Patents (Class 210/500.36)
  • Patent number: 10391457
    Abstract: A porous filter includes a porous laminate in which a plurality of biaxially stretched porous sheets made of PTFE are stacked. The Gurley number G and the bubble point B (kPa) of the porous laminate satisfy the following expressions (1) and (2): log G>3.7×10?3×B?0.8??(1) log G<4.9×10?3×B+0.45??(2).
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: August 27, 2019
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Hiroyuki Tsujiwaki, Atsushi Uno, Fumihiro Hayashi
  • Patent number: 10340492
    Abstract: To provide an ultrahigh molecular weight polyethylene stretched microporous film having high strength and heat resistance. An ultrahigh molecular weight polyethylene stretched microporous film, which comprises at least an ultrahigh molecular weight polyethylene having an intrinsic viscosity ([?]) of at least 7 dl/g and at most 60 dl/g, and which has a porosity of at least 10% and at most 70% and a breaking stress of at least 1 MPa when melt-stretched at 150° C., which uses, as the ultrahigh molecular weight polyethylene, preferably ultrahigh molecular weight polyethylene particles which satisfy (1) an intrinsic viscosity ([?]) of at least 7 dl/g and at most 60 dl/g, (2) a bulk density of at least 130 kg/m3 and at most 700 kg/m3, and (3) ?Tm (?Tm=Tm1?Tm2) of at least 9° C. and at most 30° C., which is a difference between the melting point (Tm1) at the 1st scanning and the melting point (Tm2) at the 2nd scanning measured by DSC.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: July 2, 2019
    Assignee: TOSOH CORPORATION
    Inventors: Kei Inatomi, Yasutake Wakabayashi, Shigehiko Abe
  • Patent number: 10249863
    Abstract: A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler, providing a processing plasticizer, adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: April 2, 2019
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, Joseph G. Yaritz, Mark T. DeMeuse, J. Kevin Whear
  • Patent number: 10239024
    Abstract: The invention relates to a process for preparing a filtration membrane having an average molecular out-off of <1000 g/mol.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 26, 2019
    Assignee: LANXESS Deutschland GmbH
    Inventors: Martin Mechelhoff, Patrizia Marchetti, Andrew Livingston, Zedda Karina
  • Patent number: 10173038
    Abstract: The invention is directed to delivery medical devices that enable consistent “on-demand” delivery of therapeutic agents to a vessel. The medical device of the current invention comprises retractable sheath comprising neckable elements. The medical device of the current invention comprises an expandable member, a hydrophilic coating comprising at least one therapeutic agent about the expandable member or structural layer and a retractable outer sheath with a selectively permeable microstructure. The design and methods disclosed herein ensures that therapeutic agent delivery occurs essentially only during retraction of the outer sheath, minimizing coating and/or therapeutic agent loss to the bloodstream and providing controlled delivery to the treatment site.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 8, 2019
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Carey V. Campbell, Robert L. Cleek, Edward H. Cully, Peter Heicksen, Theresa A. Holland, Thane L. Kranzler, Mei Li, Bruce M. Steinhaus, Benjamin M. Trapp, Thomas G. Triebes, Michael J. Vonesh
  • Patent number: 9991492
    Abstract: The disclosure provides electrochemical cells including a separator enclosure which encloses at least a portion of a positive or negative electrode. In an embodiment, the separator generates a contact force or pressure on at least a portion of the electrode which can improve the performance of the cell. The disclosure also provides methods for charging an electrochemical cell.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: June 5, 2018
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventor: Farshid Roumi
  • Patent number: 9968722
    Abstract: The present disclosure relates to a dialysis apparatus comprising a membrane having at least one protein from the lipocalin family bound thereon. The disclosure further relates to methods of removing non-polar, hydrophobic and/or protein bound uremic toxins from a target subject utilizing the dialysis apparatus described herein as well as methods of extracorporeal detoxification.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: May 15, 2018
    Assignee: NephroGenesis LLC
    Inventor: James A. Tumlin
  • Patent number: 9909103
    Abstract: The present disclosure relates to a tissue collection apparatus including a housing defining an inlet and an outlet and a tissue scaffold suitable for disposal within the housing, the tissue scaffold configured to be loaded with the tissue under the application of an aspiration force applied through the tissue collection apparatus.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: March 6, 2018
    Assignee: Smith & Nephew, Inc.
    Inventors: Mark Howard, Mark Smith, Stephen Curran, Graham Smith, Elizabeth Finnie
  • Patent number: 9896353
    Abstract: The present invention is directed to methods of treating a hydrocarbon-containing waste stream to form a hydrocarbon-containing retentate and an aqueous permeate which is substantially free of hydrocarbon. The method includes passing the hydrocarbon-containing waste stream through a microporous membrane to yield the hydrocarbon-containing retentate and the aqueous permeate. The membrane comprises a substantially hydrophobic, polymeric matrix and substantially hydrophilic, finely divided, particulate filler distributed throughout the matrix. The polymeric matrix has pores with a volume average diameter less than 1.0 micron, and at least 50 percent of the pores have a mean diameter of less than 0.35 micron.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: February 20, 2018
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Qunhui Guo, James C. Peters
  • Patent number: 9882205
    Abstract: The invention relates to a method for preparing a coating material for coating an electrode carrier. For known coating materials, the problem exists that these either cannot be stored without the input of energy or cannot be produced without quality fluctuations. To solve these problems, the method according to the invention comprises the steps of a) providing a dry mixture containing at least i) an active material, ii) a conductivity additive, as well as iii) a fluorine-containing polymer binder, b) bringing the dry mixture into contact with a solvent mixture containing ethylene carbonate and/or propylene carbonate, c) thoroughly mixing the solvent mixture and the dry mixture at a temperature of more than 80° C. until the fluorine-containing polymer binder has dissolved completely in the solvent mixture, wherein d), after the fluorine-containing polymer binder has dissolved completely, the mixture obtained is cooled to a temperature of less than 40° C.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: January 30, 2018
    Assignee: TARANIS GmbH
    Inventor: Stefan Matthias Winfried Theuerkauf
  • Patent number: 9793564
    Abstract: A preparation method of composite materials having ion exchange function is provided. The method comprises the following steps: adding a trace of strong protonic acid and/or Lewis acid as a catalyst into the material during compounding, to allow nitrile groups of at least one nitrile group-containing ion exchange resin and nitrile groups of functional monomers grafted on the porous fluoropolymer membrane to form a triazine ring crosslinked structure.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: October 17, 2017
    Assignee: Shandong Huaxia Shenzhou New Material Co., Ltd.
    Inventors: Yongming Zhang, Junke Tang, Ping Liu, Heng Zhang, Jun Wang
  • Patent number: 9713795
    Abstract: Provided is a porous polytetrafluoroethylene (PTFE) membrane that satisfies the following expressions: 0.2?F?4.0; 0.2?R?1.0; and R??0.1F+0.5, for the Frazier number F [cm3/sec/cm2] and the water entry pressure R [MPa]. This porous PTFE membrane may be a single-layer membrane. This porous PTFE membrane has the properties suitable for use as a waterproof air-permeable membrane, and achieves a good balance between high water resistance and high air permeability.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: July 25, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kyoko Ishii, Seiji Aizawa
  • Patent number: 9680142
    Abstract: A polyolefin microporous membrane, the membrane having, when measured by DSC, a degree of crystallinity of from 65 to 85%, a lamellar crystal/crystal ratio of from 30 to 85%, a crystal length of from 5 nm to 50 nm and an amorphous length of from 3 nm to 30 nm, and a polyolefin microporous membrane, the membrane having, when measured by X-ray diffractometry, crystal size of from 12.5 nm to 13.5 nm and a degree of crystallinity of from 64 to 68%.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: June 13, 2017
    Assignee: TEIJIN LIMITED
    Inventors: Hiroki Sano, Satoshi Nishikawa, Takashi Yoshitomi
  • Patent number: 9546326
    Abstract: The present invention is directed to methods of separating a fluid emulsion stream into a hydrocarbon stream and an aqueous stream, by contacting the stream with a microporous membrane to yield a hydrocarbon product stream and an aqueous product stream. The membrane comprises a substantially hydrophobic, polymeric matrix, and substantially hydrophilic, finely divided, particulate, substantially water-insoluble filler distributed throughout the matrix. The polymeric matrix has a mean pore size less than 1.0 micron, and the purities of the product streams are independent of the flux rate of the aqueous product stream and the pore size of the membrane.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 17, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Qunhui Guo, Carol L. Knox, Truman Wilt, Peter Votruba-Drzal, Charles F. Kahle, Gregory J. McCollum
  • Patent number: 9545603
    Abstract: Composite membranes, methods or processes for producing composite membranes, and systems utilizing composite membranes are generally described. In some examples, a composite membrane includes a porous halogenated polymer and a conductive polymer coupled to the porous halogenated polymer. In some examples, a process for producing a composite membrane includes coupling a conductive polymer and a porous halogenated polymer.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: January 17, 2017
    Assignee: NANJING UNIVERSITY
    Inventors: Yun Lu, Zhiquan Shi, Hui Zhou, Tingyang Dai
  • Patent number: 9486748
    Abstract: The problem to be solved by the present invention is to provide a filter medium for a water treatment filter having contradictory characteristics, that is, hydrophilicity and chemical resistance, and a long life, and to provide the production method thereof. A filter medium for a water treatment filter according to the present invention is characterized in comprising a porous base material having a hydrophilic coating layer; wherein the hydrophilic coating layer has a cross-linked hydrophilic polymer and a high electron density part; a hydrophilic polymer in the cross-linked hydrophilic polymer is cross-linked with an aliphatic saturated hydrocarbon group which may contain one or more functional groups selected from a group consisting of an ether group, a hydroxy group and an amino group; the high electron density part has ? electrons; and the high electron density part is covalently bonded to the cross-linked hydrophilic polymer.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: November 8, 2016
    Assignee: W. L. Gore & Associates, Co., Ltd.
    Inventors: Tomoka Ogura, Keiichi Yamakawa
  • Patent number: 9457322
    Abstract: Embodiments of the invention include a liquid filter member that includes a layer of polymeric nano fibers overlying a microporous membrane. A pressure drop of the filter member is substantially the same, or is less than, a pressure drop of the microporous membrane and the filter member has a particle retention in the presence of surfactant that is greater than the particle retention of the microporous membrane alone under the same test conditions.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: October 4, 2016
    Assignee: Entegris, Inc.
    Inventors: Wai-Ming Choi, Kiminori Kataoka
  • Patent number: 9339771
    Abstract: The present invention relates to novel pervaporation membranes comprising a porous support layer upon which a thin coating is applied. More specifically, the present invention provides pervaporation membranes with an improved performance by applying an aggregate filled PTMSP coating with a maximal thickness of 25 ?m onto the porous support. The present invention further relates to methods of the manufacturing of such pervaporation membranes.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: May 17, 2016
    Assignee: VITO N.V.
    Inventors: Pieter Vandezande, Stan Vic Valerie Claes, Steven Hans Rik Wouter Mullens
  • Patent number: 9308501
    Abstract: Superhydrophobic membrane structures having a beneficial combination of throughput and a selectivity. The membrane structure can include a porous support substrate; and a membrane layer adherently disposed on and in contact with the porous support substrate. The membrane layer can include a nanoporous material having a superhydrophobic surface. The superhydrophobic surface can include a textured surface, and a modifying material disposed on the textured surface. Methods of making and using the membrane structures.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: April 12, 2016
    Assignee: UT-BATTELLE, LLC
    Inventors: Michael Z. Hu, John T. Simpson, Tolga Aytug, Mariappan Parans Paranthaman, Matthew R. Sturgeon
  • Patent number: 9289728
    Abstract: The invention relates to microporous membranes comprising polymer and having well-balanced permeability, shutdown temperature, and pin puncture strength. The invention also relates to methods for making such membranes, and the use of such membranes as battery separator film in, e.g., lithium ion secondary batteries. The membrane has a shutdown temperature <130.5° C.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: March 22, 2016
    Assignee: Toray Battery Separator Film Co., Ltd.
    Inventors: Takeshi Ishihara, Satoshi Miyaoka, Koichi Kono, Donna J. Crowther, Patrick Brant
  • Patent number: 9211506
    Abstract: Disclosed is a membrane surface modification method. The method is applicable to a variety of hydrophobic membranes by doping selected inorganic particles. One act of the method involves the in-situ embedment of the inorganic particles onto the membrane surface by dispersing the particles in a non-solvent bath for polymer precipitation. Further membrane surface modification can be achieved by hydrothermally growing new inorganic phase on the embedded particles. The embedment of particles is for the subsequent phase growth.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: December 15, 2015
    Assignee: The University of Hong Kong
    Inventors: Kaimin Shih, Xiao-Yan Li, Xiao-Mao Wang, Tong Zhang
  • Patent number: 9150756
    Abstract: A sampling device for a substance detection instrument includes a membrane comprising a porous support having a coating thereon, the coating comprising a carborane polysiloxane or an arylene polysiloxane, the membrane having a front side configured to be placed in contact with a test sample and a back side; a sample line having an inlet proximate to the back side of the membrane and an outlet in fluid communication with a substance detector; and a source of carrier gas in fluid communication with the back side of the membrane and the sample line inlet.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: October 6, 2015
    Assignee: HAMILTON SPACE SYSTEMS INTERNATIONAL, INC.
    Inventor: Kenneth Carney
  • Patent number: 9109846
    Abstract: Sheets that are made up of oriented polymer chains are provided. Chains of polymer may be oriented or substantially aligned in one or more directions exhibiting enhanced thermal conductivity along the direction of orientation. Orientation of polymers within sheets may lead to a wide range of thermally relevant applications.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: August 18, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Gang Chen, Erik Skow, Xiaoyuan Chen
  • Publication number: 20150129496
    Abstract: The invention relates to a composite comprising a porous substrate at least partially coated with a coating layer prepared from curing a coating composition (C), the coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer. The invention further relates to a process for manufacturing a composite as afore-described, comprising the steps of: (a) providing a coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer; (b) depositing said coating composition (C) on a porous substrate; and (c) crosslinking said coating composition (C) to form a porous substrate at least partially coated.
    Type: Application
    Filed: April 29, 2013
    Publication date: May 14, 2015
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.p.A. a corporation
    Inventors: Aldo Sanguineti, Emanuele DI Nicolo, Pasquale Campanelli
  • Patent number: 9027764
    Abstract: A moisture-permeable separating membrane material includes a porous fluororesin membrane, a continuous moisture-permeable resin layer formed on the surface of the porous fluororesin membrane, and a textile layer for reinforcing the porous fluororesin membrane and the continuous moisture-permeable resin layer. The textile layer contains a flame retardant in the inside of each fiber and the surface of each fiber has been treated with a flame retardant. The moisture-permeable separating membrane material makes it possible to improve flame retardancy without deteriorating heat exchange characteristics.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: May 12, 2015
    Assignee: W. L. Gore & Associates, Co., Ltd.
    Inventors: Kazuhiro Marutani, Satoshi Yamamoto, Takashi Imai
  • Patent number: 9005496
    Abstract: Asymmetric membranes comprising a first asymmetric porous zone including a first porous asymmetry that increases from the first exterior surface through the first porous zone of the bulk, and a second asymmetric porous zone including a second porous asymmetry that increases from the second exterior surface through the second porous zone of the bulk, wherein the first average pore size is larger than the second average pore size, as well as methods of making and using the membranes, are disclosed.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: April 14, 2015
    Assignee: Pall Corporation
    Inventors: Xuemei Liang, Mark Murla, Binbing Han, Donald Simonton, Richard Morris
  • Publication number: 20150079392
    Abstract: Provided are a fluororesin microporous membrane having a narrow pore-size distribution and a smaller difference between a mean flow pore size and a maximum pore size, a method for producing the fluororesin microporous membrane, and a filter element that uses the fluororesin microporous membrane. The fluororesin microporous membrane is a porous membrane obtained by forming fluororesin particles into a membrane having a particular shape and particular dimensions, baking the fluororesin particles together by heating the membrane to a melting point of the membrane or higher, and then stretching the membrane. The fluororesin particles each have a structure in which a heat of fusion of a fluororesin constituting an outer surface portion of the particle is lower than a heat of fusion of polytetrafluoroethylene constituting an inside portion of the particle.
    Type: Application
    Filed: April 2, 2013
    Publication date: March 19, 2015
    Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Fumihiro Hayashi, Aya Murata, Atsushi Uno
  • Patent number: 8945390
    Abstract: A carbon membrane formed by carbonizing a phenol resin having at least one kind of atomic groups among a methylene bond, a dimethylene ether bond, and a methylol group, wherein the total mole content of the atomic groups is 100 to 180% with respect to the phenolic nuclei. A pervaporation separation method using the carbon membrane is also disclosed.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: February 3, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Akimasa Ichikawa, Kenji Suzuki, Naoto Kinoshita, Yoshinori Isoda, Takafumi Kimata
  • Publication number: 20150021261
    Abstract: An object of the present invention is to provide porous polymer membranes with good water permeability and good hydrophilicity. The present invention relates to a porous polymer membrane including a copolymer (A) containing vinyl alcohol units and tetrafluoroethylene units, wherein an alternating ratio of the vinyl alcohol units and the tetrafluoroethylene units is at least 30%.
    Type: Application
    Filed: December 26, 2012
    Publication date: January 22, 2015
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuko Shiotani, Yoshito Tanaka, Kengo Ito, Jun Miki
  • Patent number: 8925737
    Abstract: A crystalline polymer microporous membrane, which contains: a laminate of two or more layers including a layer containing a first crystalline polymer and a layer containing a second crystalline polymer, the laminate having a plurality of pores each piercing through the laminate in a thickness direction thereof, wherein the first crystalline polymer has higher crystallinity than crystallinity of the second crystalline polymer, and the layer containing the first crystalline polymer has the maximum thickness thicker than the maximum thickness of the layer containing the second crystalline polymer, and wherein at least one layer in the laminate has a plurality of pores whose average diameter continuously or discontinuously changes along with a thickness direction of the laminate at least at part thereof.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: January 6, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Kenichi Ishizuka, Nobuhiro Nishita
  • Publication number: 20140339155
    Abstract: The invention offers a porous polytetrafluoroethylene membrane, which is a porous resin membrane produced by the following steps: preparing multiple types of polytetrafluoroethylene each having a different quantity of heat of fusion; using each of the multiple types of polytetrafluoroethylene to form a membrane composed of a fluororesin consisting mainly of polytetrafluoroethylene; heating each membrane to its melting point or above to bake it, so that multiple types of nonporous resin membranes are produced; stacking the multiple types of nonporous resin membranes in the order of the magnitude of the quantity of heat of fusion of the polytetrafluoroethylene used to produce each of the nonporous resin membranes; bonding the stacked membranes with each other; and stretching the bonded membranes to form the porous resin membrane. The porous polytetrafluoroethylene membrane has a mean flow pore diameter of 50 nm or less.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 20, 2014
    Applicant: Sumitomo Electric Fine Polymer, Inc.
    Inventors: Fumihiro Hayashi, Aya Oya, Atsushi Uno
  • Publication number: 20140238939
    Abstract: The present invention discloses antimicrobial water treatment membranes, comprising a water treatment membrane, covalently attached to one or more antimicrobial polymers or derivatives thereof, either directly or via one or more tether molecules. There are also provided a process for preparing these antimicrobial membranes, and uses thereof in water treatment applications.
    Type: Application
    Filed: June 14, 2012
    Publication date: August 28, 2014
    Applicants: WISCONSIN ALUMNI RESEARCH FOUNDATION, BENIGURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY
    Inventors: Ron Kasher, Shani Avneri, Marina Yamit Lutsky, Jihua Zhang, Samuel Helmer Gellman, Shannon Stahl
  • Publication number: 20140231341
    Abstract: Porous PTFE membranes comprising a first porous surface and a second porous surface, and a bulk between the first porous surface and the second porous surface, wherein the membrane has a pore rating of from about 2 nanometers to about 50 nanometers, and the first and second porous surfaces each comprise a ratio of non-fused nodule area to fused nodule area of about 1 or greater, and methods of making and using the membranes, are disclosed.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: Pall Corporation
    Inventors: Andrew T. SITTERER, Amarnauth Singh, Joanna Fielding, Thomas C. Gsell, Michael G. Ishee
  • Publication number: 20140231340
    Abstract: Composites including porous PTFE membranes comprising an intermediate PTFE membrane having a pore rating of from about 2 nanometers to about 20 nanometers, interposed between, and bound to, porous fluoropolymer membranes having larger pore ratings, and methods of making and using the composites, are disclosed.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: Pall Corporation
    Inventors: Thomas C. Gsell, Michael G. Ishee, Amarnauth Singh, Joanna Fielding
  • Patent number: 8801933
    Abstract: The present invention provides a system for liquid distillation which includes a vapor permeable-liquid impermeable microporous membrane having structures defining a plurality of pores, an oleophobic material that is applied to the structures of the membrane so as to leave the plurality of pores open, a means for supplying non-distilled liquid to the first side of the membrane, and a means for collecting distilled liquid from a second side of the membrane. In a further example, the present invention provides a method for the distillation of liquids.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: August 12, 2014
    Assignee: BHA Altair, LLC
    Inventors: Vishal Bansal, Christopher Keller
  • Patent number: 8789708
    Abstract: Versions of the invention include compositions and methods for making them that include a polymeric porous membrane with one or more atmospheric pressure microwave plasma modified surfaces. The modified porous membrane is stable, non-dewetting, and retains its mechanical strength.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: July 29, 2014
    Assignee: Entegris, Inc.
    Inventors: Jijun Ge, Alketa Gjoka, Jieh-Hwa Shyu
  • Patent number: 8757395
    Abstract: Novel porous PTFE membranes are described possessing a unique combination of high strength, low flow resistance, and small pore size. Additionally, unique constructions with superior filtration and venting properties incorporating porous PTFE membranes are described.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: June 24, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: John E. Bacino, Alex R. Hobson, Jason J. Strid
  • Patent number: 8758625
    Abstract: Use of a porous hollow fiber membrane for producing a clarified biomedical culture medium by a method including a filtration step of distributing a biomedical culture medium over the porous hollow fiber membrane, a tube wall of the hollow fiber membrane being constituted of a blend of a hydrophobic polymer and polyvinylpyrrolidone. A content of the polyvinylpyrrolidone is not lower than 0.2% by mass and not higher than 3% by mass relative to a total mass of the porous hollow fiber membrane, and, when the tube wall is divided in a membrane-thickness direction equally into three regions, a content of the polyvinylpyrrolidone in an outer circumferential region including an outer face is higher than a content of the polyvinylpyrrolidone in an inner circumferential region including an inner face, and an average pore size in the inner face is larger than an average pore size in the outer face.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 24, 2014
    Assignees: Asahi Kasei Chemicals Corporation, Asahi Kasei Medical Co., Ltd.
    Inventors: Chihiro Kato, Yuukou Seki, Satoshi Shiki
  • Publication number: 20140151288
    Abstract: Technologies are generally described for composite membranes which may include a porous graphene layer in contact with a porous support substrate. In various examples, a surface of the porous support substrate may include at least one of: a thermo-formed polymer characterized by a glass transition temperature, a woven fibrous membrane, and/or a nonwoven fibrous membrane. Examples of the composite membranes permit the use of highly porous woven or nonwoven fibrous support membranes instead of intermediate porous membrane supports. In several examples, the composite membranes may include porous graphene layers directly laminated onto the fibrous membranes via the thermo-formed polymers. The described composite membranes may be useful for separations, for example, of gases, liquids and solutions.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: Empire Technology Development LLC
    Inventors: Seth Adrian Miller, Gary L. Duerksen
  • Patent number: 8739976
    Abstract: A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: June 3, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Kenichi Ishizuka, Nobuhiro Nishita
  • Patent number: 8739978
    Abstract: Disclosed is a porous membrane with high tensile strength, good elongation at break, and good water permeability, and a method for manufacturing the same. The porous membrane comprises a bead structure including plural spherical crystallites, wherein macro voids isolated from one another with the plural spherical crystallites are formed in an outer surface side of the porous membrane.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: June 3, 2014
    Assignee: Kolon Industries Inc.
    Inventors: Joon-Khee Yoon, Moo-Seok Lee
  • Patent number: 8709254
    Abstract: A microporous organic-inorganic hybrid membrane based on silica of the invention has an average pore diameter of less than 0.6 nm, and comprises bridging organosilane moieties of the formula ?O1.5Si—CHR—SiO1.5? or ?O1.5Si—CH(CH3)—SiO1.5?. The membrane can be used in the separation of hydrogen from mixtures comprising hydrogen and CH4, CO2, CO, N2, and the like, and in the separation of water from alcohols having 1-3 carbon atoms, optionally in the presence of an inorganic or organic acid.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: April 29, 2014
    Assignee: Stichting Energieonderzoek Centrum Nederland
    Inventors: Rob Kreiter, Hessel Lennart Castricum, Jaap Ferdinand Vente, Johan Evert Ten Elshof, Maria Dirkje Anna Rietkerk, Henk Martin Veen
  • Patent number: 8695812
    Abstract: A water-proof sound-transmitting membrane 10 includes a polytetrafluoroethylene porous membrane 1 and has a surface density of 1 to 20 g/m2. The polytetrafluoroethylene porous membrane 1 includes a first porous layer 1a, and a second porous layer 1b stacked on and integrated with the first porous layer 1a by a binding force acting between polytetrafluoroethylene matrices.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: April 15, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Yuri Horie, Kouji Furuuchi
  • Patent number: 8668093
    Abstract: Versions of the invention include compositions and methods for making them that include a polymeric porous membrane with one or more atmospheric pressure microwave plasma modified surfaces. The modified porous membrane is stable, non-dewetting, and retains its mechanical strength.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 11, 2014
    Assignee: Entegris, Inc.
    Inventors: Jijun Ge, Alketa Gjoka, Jieh-Hwa Shyu
  • Patent number: 8663530
    Abstract: A water-proof sound-transmitting membrane 10 includes a polytetrafluoroethylene porous membrane 1 and has a surface density of 1 to 20 g/m2. The polytetrafluoroethylene porous membrane 1 includes a first porous layer 1a, and a second porous layer 1b stacked on and integrated with the first porous layer 1a by a binding force acting between polytetrafluoroethylene matrices.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Yuri Horie, Kouji Furuuchi
  • Publication number: 20130341277
    Abstract: A reverse osmosis (RO) membrane can include a porous substrate, a multilayer film arranged on the substrate, which includes a first layer including a polyelectrolyte and a second layer including a plurality of clay particles, where the first layer is arranged adjacent to the second layer. The multilayer film can be prepared by a spray-LbL process. The resulting RO membrane can provide high water permeability combined with high salt rejection.
    Type: Application
    Filed: June 25, 2013
    Publication date: December 26, 2013
    Inventors: Jason R. Kovacs, Paula T. Hammond
  • Publication number: 20130334130
    Abstract: A conformal coating that resists fouling by waterborne contamination in aquatic environments, a method for fabricating the coating, and a filter having such a coating are disclosed. The coating comprises a hydrophilic polymer and a surfactant wherein the surfactant undergoes a phase change upon exposure to a saline solution. Also disclosed are in situ methods for regenerating anti-fouling filters having the fouling resistant coating.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 19, 2013
    Inventors: Rahul Ganguli, Vivek Mehrotra, Tony Ten-Luen Liao
  • 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: 8597518
    Abstract: In one embodiment, a membrane comprises: a nonporous, hydrophobic selective layer configured to be on a feed solution side of the membrane and polyethylene layer configured to be on a permeate side of the membrane, wherein the membrane is configured to selectively separate an organic component from an aqueous solution. In some embodiments, the method for separating an organic component from an aqueous stream can comprise: contacting a nonporous, hydrophobic selective layer of a membrane with the aqueous stream comprising the organic component, creating a vacuum on the side of the membrane comprising the support layer, permeating the organic component through the membrane into an exit chamber, and removing the organic component permeate from the exit chamber.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: December 3, 2013
    Assignee: The University of Connecticut
    Inventors: Richard S. Parnas, Si-Yu Li
  • Publication number: 20130284672
    Abstract: A method for cross-linking a styrenic polymer, the method comprising providing a partly sulphonated styrenic polymer and cross-linking the partly sulphonated styrenic polymer in the presence of a polyphosphoric acid.
    Type: Application
    Filed: January 6, 2012
    Publication date: October 31, 2013
    Inventors: Zijun Xia, Jianhua Fang, Russell James MacDonald, Su Lu, Hai Yang, John Harold Barber