Organic Patents (Class 210/500.27)
  • Patent number: 10908025
    Abstract: A method of preparation of focal plane arrays of infrared bolometers includes processing carbon nanotubes to increase a temperature coefficient of resistance (TCR), followed by patterning to form focal plane arrays for infrared imaging.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 2, 2021
    Inventors: Elena Borisova Bekyarova, Mikhail Efimovich Itkis, Ramesh Palanisamy, Robert Cort Haddon
  • Patent number: 10890570
    Abstract: A device including a first chamber, a second chamber, and a membrane permeable to neutral gases but impermeable to water that is positioned between the first chamber and the second chamber. The membrane includes a first layer including PVDF and PDMS, and the PVDF has a plurality of pores at least partially filled with at least some of the PDMS.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: January 12, 2021
    Inventors: Megan Frost, Weilue He
  • Patent number: 10807046
    Abstract: Asymmetric articles are described including a porous substrate with two opposing major surfaces and a porous structure extending between the surfaces, and a polymeric coating on one of the major surfaces and extending into the porous structure to a depth of the porous structure. Methods for making an asymmetric composite article are also provided, including providing a porous substrate, treating the porous substrate with a plasma treatment or a corona treatment from one major surface to a depth of the porous structure between the two major surfaces. The method further includes applying a coating solution to the treated porous substrate and drying the coating solution to form a composite asymmetric composite article having a polymeric coating on one major surface and extending into the porous structure to the depth of the treated porous structure.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 20, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Michelle M. Mok, Kannan Seshadri, Moses M. David, Seth M. Kirk, Daniel Carvajal
  • Patent number: 10700329
    Abstract: The present invention relates to a method for manufacturing a separator for batteries, a separator manufactured by the method, and a secondary battery including the separator. More specifically, the present invention relates to a method for manufacturing a separator having enhanced tensile strength by performing a shutdown process stopping a stretch during a process of stretching a base film of the separator.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: June 30, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kee Wook Kim, Sang Ho Lee, Jung Seong Lee, Jun Ho Chung, Jae Hyun Cho
  • Patent number: 10668404
    Abstract: A filter for a chromatography system includes a filter body having an exterior wall, a cavity, an interior wall surrounding the cavity and a channel extending between the exterior and interior walls. The channel passes a flow of a liquid from the cavity. The filter body is formed of a sintered metal oxide material and has a pore size that is less than a particle size to be filtered liquid. In some embodiments the filter body is formed of zirconium oxide or aluminum oxide. The filters reduce or eliminate the types of reactions that occur between conventional filter bodies and chromatographic solvents and samples. The filters can be used at different locations in a chromatography system to remove particles that may be present in sources of chromatographic solvents or introduced into the chromatographic system flow by chromatographic components, such as pumps, valves and other chromatographic system components.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 2, 2020
    Assignee: Waters Technologies Corporation
    Inventors: Michael R. Jackson, Mark W. Moeller
  • Patent number: 10632428
    Abstract: The present specification relates to a method for manufacturing a water-treatment membrane, a water-treatment membrane manufactured using the same, and a water-treatment module including the water-treatment membrane.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: April 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Byoungsoo Lee, Hyung Joon Jeon, Hyelim Kang, Chong Kyu Shin, Bong Ju Kwak
  • Patent number: 10549014
    Abstract: Embodiments described include devices and methods for forming a porous polymer material. Devices disclosed and formed using the methods described a spacer for spinal fusion, craniomaxillofacial (CMF) structures, and other structures for tissue implants.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 4, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Sean Hamilton Kerr, Ali Recber, Thomas Pepe, Dominique Messerli, Lawton Laurence, Ryan Walsh, Thomas Kueenzi, Brandon Randall
  • Patent number: 10441898
    Abstract: Conventional oil-water separation methods are inefficient since they break down a given “primary” phase into two “secondary” phases, one is richer and the other one is poorer in the “secondary” phase of the “primary” phase. As such, neither oil is recovered as a readily de-watered stream nor is water recovered as a readily de-oiled stream. However, de-watering and de-oiling of “oil-water” streams are synonymous, and therefore they should be simultaneously targeted by an efficient method. There are provided herein systems and methods to effectively treat “oil-water” streams by simultaneously de-watering the oil phase and de-oiling the water phase, de-scaling the de-oiled water phase, and de-salting the de-scaled water phase.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 15, 2019
    Inventor: Mansour S. Bader
  • Patent number: 10436738
    Abstract: The present disclosure concerns a membrane for a sensor, such as an opto-chemical or electrochemical sensor, including a polymer layer, for example, one featuring pores or openings, that is permeable to a measuring fluid and/or an analyte contained in the measuring fluid, with a surface designed to be in contact with a measuring fluid, wherein the surface is designed such that, at least in a moist condition of the polymer layer obtained by moistening the surface, a contact angle of a water drop applied to the surface is less than 50°, including less than 30°, and including less than 10°.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: October 8, 2019
    Assignee: Endress+Hauser Conducta GmbH+Co. KG
    Inventors: Andreas Löbbert, Alexander Hörig
  • Patent number: 10384961
    Abstract: Hierarchical porous membranes suitable for use in oil/water separation processes are provided. The membranes described herein are particularly well suited for separating trace amounts of water (e.g., no greater than 3 wt % water content, no greater than 1 wt % water content, or 50-1000 ppm water) from oil. The membranes have a wide range of applications, including deep seep oil exploration, oil purification, and oil spill cleanup.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 20, 2019
    Inventors: Brian Richmond Solomon, Kripa K. Varanasi, Nasim Hyder
  • Patent number: 10294129
    Abstract: A water treatment system comprises at least one electrolytic cell comprising at least one electrode and a power source for powering the electrode. The electrode may be a metal electrode comprising a coating of polymer comprising structural units of formula I (I) wherein R1 is independently at each occurrence a C1-C6 alkyl radical or —SO3M wherein M is independently at each occurrence a hydrogen or an alkali metal a hydrogen or an alkali metal, R2 is independently at each occurrence a C1-C6 alkyl radical, a is independently at each occurrence an integer ranging from 0 to 4, and b is independently at each occurrence an integer ranging from 0 to 3. An associated method is also described.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: May 21, 2019
    Inventors: Zijun Xia, Caroline Chihyu Sui, Qunjian Huang, Yida Xu, Jeffrey I. Melzer, Wei Lu, Xing Zhang, Yanju Wang, Xiaoan Xie
  • Patent number: 10245558
    Abstract: A nanocomposite membrane includes a macroporous polymer membrane having a plurality of pores. A plurality of metal nanoparticles are synthesized and immobilized within those plurality of pores. The nanoparticles are reduced and capped with a green reducing and capping agent such as green tea extract.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: April 2, 2019
    Inventors: Dibakar Bhattacharyya, Vasile Smuleac, Rajender S. Varma, Subhas K. Sikdar
  • Patent number: 10092881
    Abstract: A membrane includes a porous base membrane and a hydrophilic coating. The coating comprises a hydrophilic additive and a hydrophilic polymer derivatized with an electron beam reactive group adapted to form a radical under high energy irradiation. In some embodiments, the membrane comprises a fluoropolymer. Also disclosed are processes for forming the membrane.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 9, 2018
    Assignee: BHA ALTAIR, LLC
    Inventors: David Roger Moore, Ryan Austin Hutchinson
  • Patent number: 10093557
    Abstract: A bio-inspired method for detoxifying contaminated water is disclosed. In the method, polydopamine, a mussel-inspired adhesive catecholamine was used as an adsorbent to effectively remove from contaminated water three major classes of toxic agents: heavy metal ions (e.g., Cr, Hg, Pb, Cu, and Cd), toxic organic species (e.g., 4-aminopyridine), and radioisotopes (e.g., Lutetium-177). Furthermore, the polydopamine adsorbent was regenerated by treatment with acid or hydrogen peroxide.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: October 9, 2018
    Inventors: Phillip B. Messersmith, Haeshin Lee
  • Patent number: 10086337
    Abstract: A carbon molecular sieve (CMS) membrane is made by pyrolyzing, to a peak pyrolysis temperature TP, a hollow fiber membrane having a polymeric sheath surrounding a polymeric core, anti-substructure collapse particles present in pores formed in the polymeric core help prevent collapse of pores formed in the hollow fiber membrane before pyrolysis. The anti-substructure collapse particles are made of a material or materials that either: i) have a glass transition temperature TG higher than TP, ii) have a melting point higher than TP, or ii) are completely thermally decomposed during said pyrolysis step at a temperature less than TP. The anti-substructure collapse particles are not soluble in a solvent used for dissolution of the polymeric material of the core.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: October 2, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Dean W. Kratzer, Madhava R. Kosuri, Canghai Ma
  • Patent number: 9977018
    Abstract: An electrochemical lateral flow biosensor (ELFB) includes an ELFB strip and electronic detector unit coupled to the strip. The strip includes a polymeric hydrophobic membrane, conjugation pad, sampling pad, screen-printed electrode (SPE), and wick pad. The membrane provides a solid support and enables capillary flow along the strip. The conjugation pad is placed on the membrane at one end of the strip and contains adsorbed dehydrated labelled conjugate particles that are coated with the biorecognition element and coated or filled with the electrochemically active component. The sampling pad is placed on the conjugation pad and provides adsorption of the liquid sample. The SPE is coated with immobilized capture antibodies. The wick pad is placed on the SPE and provides absorption of excess reagents maintaining a lateral flow along the strip. The ELFB can be used for rapid and early detection and quantity analysis of biological liquids and wastewater.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: May 22, 2018
    Inventors: Robert S. Marks, Polina Brangel, Vladislav Papper, Evgeni Eltzov
  • Patent number: 9943800
    Abstract: The invention proposes an apparatus for gas cleaning having a high gas cleaning efficiency at any relative humidity. The apparatus comprises a passage (10) for gas flow; a hydrophilic carrier (12) permeable for gas flow, at least part of which is positioned within said passage for gas flow, and configured for containing a reagent that contacts the gas in said passage for gas flow; a unit (14) for disposing liquid to said carrier; and a controller (16), associated with said unit for disposing liquid, configured for controlling the unit for disposing to dispose an aqueous solution of dissolved reagent to the carrier; and after that controlling the unit for disposing to dispose liquid in case the humidity of the gas is below a first humidity threshold, or to stop disposing liquid in case the humidity of the gas is above a second humidity threshold.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: April 17, 2018
    Inventor: Johan Marra
  • Patent number: 9925719
    Abstract: The present invention provides a band seal for hard capsules filled with PEG, particularly a low-molecular-weight PEG, PEG 200 to 600, the band seal being capable of effectively preventing content leakage through the gap between the body and cap of the capsule; and a liquid for preparing the band seal. The present invention further provides a hard capsule filled with PEG, particularly a low-molecular-weight PEG, PEG 200 to 600, the filled capsule being prevented content leakage through the gap between the body and cap of the capsule. The band seal can be prepared using a polyvinyl alcohol, a polyvinyl alcohol copolymer, or a mixture thereof as a main component.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 27, 2018
    Assignee: QUALICAPS CO., LTD.
    Inventor: Shinji Tochio
  • Patent number: 9808770
    Abstract: Membranes having first and second porous portions, wherein the first portion has a more open pore structure than the second portion, wherein the first porous portion includes channels prepared by removing introduced fibers, as well as methods of making and using the membranes, are disclosed.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: November 7, 2017
    Assignee: Pall Corporation
    Inventors: Wilfrid Klaus Wixwat, Binbing Han
  • Patent number: 9768502
    Abstract: Embodiments of the present invention provide for anion exchange membranes and processes for their manufacture. The anion exchange membranes described herein are made the polymerization product of at least one functional monomer comprising a tertiary amine which is reacted with a quaternizing agent in the polymerization process.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 19, 2017
    Assignee: Evoqua Water Technologies LLC
    Inventor: Juchui Ray Lin
  • Patent number: 9738984
    Abstract: Functionalized membranes for use in applications, such as electrodeionization, can be prepared simply and efficiently by contacting a conductive carbon nanotube and polymer membrane with a solution containing at least one electrochemically active and functional compound under conditions suitable for electrochemically depositing the electrochemically active and function compound on a surface of the membrane.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: August 22, 2017
    Inventor: Seth Adrian Miller
  • Patent number: 9604178
    Abstract: Integrated, sequential stages of nanofiltration, forward osmosis, and reverse osmosis and related membranes provide an Integrated Osmosis structure, systems and methods. By optimally placing and using the desired characteristics of each membrane, performance and cost effectiveness not attainable individually is obtained. Integrated Osmosis systems provide high diffusive and osmotic permeability, high rejection, low power consumption, high mass transfer, and favorable Peclet number, by manipulating convection, advection and diffusion, low concentration polarization gradients, low reverse salt flux and effective restoration of performance after cleaning fouled membranes. Benefits include increased permeate recovery and decreased waste concentrate volume from reverse osmosis processes or other elevated osmotic pressure solutions. Integrated Osmosis first employs nanofiltration for selective harvesting of solutes, proffering a reduced osmotic pressure permeate.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: March 28, 2017
    Inventors: Upen Jayant Bharwada, Kenneth R. Ward
  • Patent number: 9553325
    Abstract: Provided are a polymer electrolyte membrane used in fuel cells, and a method for producing the same, the method including a step of filling a crosslinkable ion conductor in the pores of a porous nanoweb support; and a step of crosslinking the ion conductor filled in the pores of the porous nanoweb support. The method for producing a polymer electrolyte membrane uses a relatively smaller amount of an organic solvent, can ameliorate defects of the support caused by solvent evaporation, and can enhance the impregnability of the ion conductor to the support and the convenience of the process.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: January 24, 2017
    Inventors: Dong Hoon Lee, Na Young Kim, Moo Seok Lee, Yong Cheol Shin
  • Patent number: 9540261
    Abstract: Ion exchange membranes may include a polymeric microporous substrate, a cross-linked ion transferring polymeric layer on the substrate, and a hydrophobic coating on the cross-linked ion transferring polymer. The hydrophobic coating may comprise at least one of a weak base copolymer and an organosilicate compound.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 10, 2017
    Inventor: Juchui Ray Lin
  • Patent number: 9493816
    Abstract: A sample handling method may include drawing an encapsulating liquid from an encapsulating-liquid input; discharging the drawn encapsulating liquid (a) onto a free surface of a carrier liquid in a carrier-liquid conduit having a stabilization feature and (b) proximate to the stabilization feature, the encapsulating liquid being immiscible with the carrier liquid, so that the discharged encapsulating liquid does not mix with the carrier liquid, floats on top of the carrier liquid, and is immobilized by the stabilization feature; drawing a sample liquid from a sample-liquid input; and discharging the drawn sample liquid, the sample liquid being immiscible with the encapsulating liquid and with the carrier liquid, so that the sample liquid does not mix with the encapsulating liquid or with the carrier liquid.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: November 15, 2016
    Assignee: GenCell Biosytems Ltd.
    Inventors: Kieran Curran, Paul Fleming, Seamus Gilhooley, Micheál Keane, Inga Rosca, Patrick Tuohy
  • Patent number: 9453120
    Abstract: The invention is directed to carbon nanostructure composite systems which may be useful for various applications, including as dry adhesives, electronics and display technologies, or in a wide variety of other areas where organized nano structures may be formed and integrated into a flexible substrate. The present invention provides systems and methods wherein organized nanotube structures or other nanostructures are embedded within polymers or other flexible materials to provide a flexible skin-like material, with the properties and characteristics of the nanotubes or other nanostructures exploited for use in various applications. In one aspect, the invention is directed to a carbon nanotube/polymer composite material having a plurality of carbon nanotubes formed into a predetermined architecture, with each of the plurality of nanotubes having a desired width and length.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: September 27, 2016
    Assignees: The University of Akron, Rensselaer Polytechnic Institute
    Inventors: Pulickel M. Ajayan, Ali Dhinojwala
  • Patent number: 9403190
    Abstract: A solvent composition comprising an organic solvent; dispersed nanoparticles; and a non-volatile electrolyte is provided. A method of forming a liquid composite composition is provided.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: August 2, 2016
    Assignee: eSionic Corp.
    Inventor: Seth A. Miller
  • Patent number: 9375684
    Abstract: A nanocomposite membrane includes a macroporous polymer membrane having a plurality of pores. A plurality of metal nanoparticles are synthesized and immobilized within those plurality of pores. The nanoparticles are reduced and capped with a green reducing and capping agent such as green tea extract.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: June 28, 2016
    Inventors: Dibakar Bhattacharyya, Vasile Smuleac, Rajender S. Varma, Subhas K. Sikdar
  • Patent number: 9371455
    Abstract: The present invention provides a surface-independent surface-modifying multifunctional biocoating and methods of application thereof. The method comprises contacting at least a portion of a substrate with an alkaline solution comprising a surface-modifying agent (SMA) such as dopamine so as to modify the substrate surface to include at least one reactive moiety. In another version of the invention, a secondary reactive moiety is applied to the SMA-treated substrate to yield a surface-modified substrate having a specific functionality.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: June 21, 2016
    Assignee: Northwestern University
    Inventors: Phillip B. Messersmith, Haeshin Lee
  • Patent number: 9274099
    Abstract: A variety of applications, systems, methods and constructs are implemented for use in connection with screening of ion-channel modulators. Consistent with one such system, drug candidates are screened to identify their effects on cell membrane ion channels and pumps. The system includes screening cells having light responsive membrane ion switches, voltage-gated ion switches and fluorescence producing voltage sensors. A chemical delivery device introduces the drug candidates to be screened. An optical delivery device activates the light responsive ion switches. An optical sensor monitors fluorescence produced by the voltage sensors. A processor processes data received from the optical sensor. A memory stores the data received from the optical sensor.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: March 1, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Karl Deisseroth, Feng Zhang, Viviana Gradinaru, M. Bret Schneider
  • Patent number: 9276245
    Abstract: A film made of a fluorinated polymer of the polyvinylidene fluoride type having suitable properties for use as a lithium storage battery separator is produced using a phase inversion technique in which a solution containing the fluorinated polymer is brought into the presence of an atmosphere laden with water vapor to precipitate the fluorinated polymer. The fluorinated polymer can be precipitated by placing the support on which the solution is deposited, in which the fluorinated polymer has been previously dissolved, in an enclosure containing an atmosphere laden with water vapor and thermostatically regulated to a temperature comprised between 30° C. and 70° C. The relative humidity content during precipitation of the fluorinated polymer is advantageously between about 60% and about 98%.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: March 1, 2016
    Inventors: Sébastien Patoux, Fannie Alloin, Lise Daniel
  • Patent number: 9227360
    Abstract: Fabrication methods for selective membranes that include aligned nanotubes can advantageously include a mechanical polishing step. The nanotubes have their ends closed off during the step of infiltrating a polymer precursor around the nanotubes. This prevents polymer precursor from flowing into the nanotubes. The polishing step is performed after the polymer matrix is formed, and can open up the ends of the nanotubes.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: January 5, 2016
    Assignee: Porifera, Inc.
    Inventors: Valentin Lulevich, Olgica Bakajin, Jennifer E. Klare, Aleksandr Noy
  • Patent number: 9107950
    Abstract: A suspension of gas-filled microbubbles can be synthesized by sonicating a lipid solution and a first gas in a reaction volume. The resulting microbubble suspension can be stored for later use, for example, for infusion into a patient for gas delivery thereto. Various techniques can improve the shelf life of the microbubbles. For example, the microbubble suspension can be freeze-dried to remove water and the first gas therefrom while leaving the microbubble shells intact. In an alternative, the microbubble suspension can be frozen. In still another alternative, the microbubble suspension can be formed with a first gas that has a low solubility, thereby creating microbubbles with increased stability. Prior to use, the microbubble suspension can be prepared by exchanging the gas in the microbubble cores, rehydrating, and/or raising the temperature of the stored microbubbles.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: August 18, 2015
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Mark A. Borden, Edward J. Swanson
  • Patent number: 9048479
    Abstract: Provided are a tri-block copolymer and an electrolyte membrane prepared therefrom. The tri-block copolymer has a structure of polar moiety-containing copolymer block/non-polar moiety-containing copolymer block/polar moiety-containing copolymer block, or non-polar moiety-containing copolymer block/polar moiety-containing copolymer block/non-polar moiety-containing copolymer block, and is useful for an electrolyte membrane for fuel cells. The electrolyte membrane for fuel cells prepared from the tri-block copolymer exhibits superior dimensional stability and excellent fuel cell performance.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: June 2, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Seong Ho Choi, Hyuk Kim, Sang Woo Lee, Tae Geun Noh, Ji Soo Kim
  • Publication number: 20150144552
    Abstract: With the subject invention, a method is provided for preparing a filter membrane including the steps of dispersing a liquid which is generally hydrophobic into the pores of a porous membrane, and applying a solution containing lipids onto at least a first surface of the porous membrane containing the liquid. Advantageously, the subject invention allows for filter membranes to be prepared which can be stored for periods of time without degradation in performance. The subject invention may have applicability in various contexts, but is well-suited for preparing filter membranes for permeability screening, particularly Parallel Artificial Membrane Permeability Assay (PAMPA).
    Type: Application
    Filed: February 4, 2015
    Publication date: May 28, 2015
  • Patent number: 9039900
    Abstract: Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 26, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Ken Gethard
  • Patent number: 9033159
    Abstract: Processes for preparation of macroporous membranes having unusually high equilibrium protein binding capacities are described. Membranes include a self-supporting porous membrane substrate and a grafted polymeric film on the pore surfaces of the substrate. A polymeric film may be grafted to the porous membrane substrate using surface-initiated polymerization. The grafted polymer chains within the polymeric film can act as molecular ‘brushes’ or ‘tentacles’ in solution and can contain one or more capture chemistries for biomolecules. Membranes can be used in the separation and purification of biomolecules such as proteins, nucleic acids, virus or virus-like particles, endotoxins, and the like.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 19, 2015
    Assignee: Clemson University
    Inventors: Scott M. Husson, Bharat V. Bhut
  • 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: 9004293
    Abstract: A semi-permeable film includes a nanoporous material and a polymer matrix. The nanoporous material includes a nanoporous core and a coating layer that is disposed on a surface of the nanoporous core. The coating layer may include a particle selected from a metal hydroxide particle, a metal oxide particle, and a combination thereof. A separation membrane may include the semi-permeable film. Example embodiments also relate to a method of manufacturing the semi-permeable film and the separation membrane.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: You Hwan Son, Hye Young Kong, Sung Soo Han
  • Publication number: 20150096935
    Abstract: Membranes including functionalized carbon nanotubes, nanodiamonds and/or graphene oxide immobilized in or on the membranes are disclosed. The membranes including the immobilized nanocarbons increase interactions with water vapor to improve desalination efficiency in membrane distillation. The membranes may be deployed in all modes of membrane distillation such as air gap membrane distillation, direct contact membrane distillation, vacuum membrane distillation and other separations.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Somenath Mitra, Sagar Roy, Madhulina Bhadra
  • Publication number: 20150076056
    Abstract: The present disclosure relates to a device for use in fluid purification, particularly to a membrane for use in fluid purification, the membrane comprising a porous basal layer in the form of polysulfone (PSF); a multitude of multi-walled carbon nanotubes (CNTs) dispersed within the basal layer; and a top layer in the form of polyvinyl alcohol (PVA). The disclosure extends to a method of manufacturing the device.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 19, 2015
    Inventors: Sunny Esayegbemu Iyuke, Selby Maphutha
  • Patent number: 8980096
    Abstract: The present invention relates to a method for the modification of metal hydroxide and/or metal oxide surfaces of an inorganic matrix with an organometallic reagent for obtaining an organic functionalized matrix suitable for filtration processes. The method involves the direct covalent binding of organic functional groups by allowing a pre-treated matrix to react with organometallic reagents in the present of a suitable solvent. The present invention further relates to an organic functionalized matrix obtainable or obtained by carrying out a method according to the invention. The invention also provides various uses of a surface-modified matrices as described herein in various industrial applications, including for instance in filtration and/or adsorption and/or separation processes, or as support, e.g. for catalyst systems or for enzyme systems.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: March 17, 2015
    Assignees: Vito NV, Universiteit Antwerpen
    Inventors: Anita Buekenhoudt, Kenny Wyns, Vera Meynen, Bert Maes, Pegie Cool
  • Publication number: 20150068978
    Abstract: The disclosure is directed to an intermediate filtering membrane comprising: a filtering membrane having a charged or polar surface; and a transiently coupled charged compound, wherein the charged compound has an opposite charge to the membrane charge. Likewise, provided herein are methods and kits utilizing the intermediate membrane for various filtering membranes operations.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 12, 2015
    Inventors: Gilad Lando, Dikla Zadaka-Amir, Andrew Norman Shipway, Steve Daren
  • Publication number: 20150053610
    Abstract: Described herein are mixed matrix filtration membranes and related, compositions, methods and systems and in particular mixed matrix filtration membranes with an embedded polymer network and/or embedded polymeric micro/nanoparticles functionalized with a functionalization polymer covalently and/or non covalently linked to the micro/nanoparticles and related compositions, methods, and systems.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 26, 2015
    Inventors: Mamadou S. DIALLO, Madhusudhana Rao KOTTE
  • 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
  • Patent number: 8945391
    Abstract: The object of the invention is to provide an organic polymers-separation membrane filter capable of physically separating organic polymers based on their molecular stereostructure difference without giving rise to chemical changes in them and without selecting their chemical compositions. The organic polymers-separation membrane filter comprising an ultrafilter membrane is characterized in that a path taken by a nano permeation pore has a narrower path portion having a width narrower than that of the rest, wherein organic polymers capable of changing in their stereostructure are passed through the path while their width is transformed into a configuration along the narrower path portion, thereby separating the organic polymers. In the ultrafilter membrane, particulate materials are mutually coupled together in its thickness and planar directions. The particulate materials comprise a protein.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: February 3, 2015
    Assignee: National Institute for Materials Science
    Inventors: Izumi Ichinose, XinSheng Peng
  • Patent number: 8945389
    Abstract: There is proposed a separation method for mixtures of materials, using a cellulose hydrate membrane having a porous double structure which consists of micropores having a diameter in the range from >100 nm to 20 ?m and ultrapores which have a diameter of <100 nm and which are not accessible to Blue Dextran having an average molecular weight Mw of 2 000 000, wherein the fraction of the volume of the ultrapores is more than 15% of the entire pore volume accessible to water, and wherein, in a preferred embodiment, sulfonic acid ligands are bonded to the membrane.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: February 3, 2015
    Assignee: Sartorius Stedim Biotech GmbH
    Inventors: René Faber, Wolfgang Demmer
  • Patent number: 8939295
    Abstract: A multi-layer, fluid transmissive structure is provided that comprises first and second fiber layers each comprising a plurality of polymeric fibers bonded to each other at spaced apart contact points. The polymeric fibers of these fiber layers have diameters greater than one micron and collectively define interconnected interstitial spaces providing tortuous fluid flow paths through the first and second fiber layers. The structure also comprises a plurality of nanofibers disposed intermediate at least a portion of the first fiber layer and at least a portion of the second fiber layer.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: January 27, 2015
    Assignee: Essentra Porous Technologies Corp.
    Inventors: Bennett C. Ward, Geoffrey M. Stoltz
  • Patent number: 8940173
    Abstract: Provided herein composition and methods for nanoporous membranes comprising single walled, double walled, or multi-walled carbon nanotubes embedded in a matrix material. Average pore size of the carbon nanotube can be 6 nm or less. These membranes are a robust platform for the study of confined molecular transport, with applications in liquid and gas separations and chemical sensing including desalination, dialysis, and fabric formation.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: January 27, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Olgica Bakajin, Aleksandr Noy, Francesco Fornasiero, Hyung Gyu Park, Jason K. Holt, Sangil Kim
  • Publication number: 20150014244
    Abstract: To provide a composite semipermeable membrane capable of maintaining high removal performance even after its supporting membrane has come into contact with an aqueous solution high in salt concentration. A composite semipermeable membrane including: a supporting membrane which includes a substrate and a porous supporting layer; and a separation functional layer provided on the porous supporting layer, in which a strength to peel the porous supporting layer away from the substrate is 1.1 N/25 mm or higher.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Inventors: Harutoki Shimura, Jun Okabe, Kiyohiko Takaya, Masahiro Kimura