Hollow Fiber Or Cylinder Patents (Class 210/500.23)
  • Patent number: 11389771
    Abstract: Asymmetric composite membranes and methods for their preparation are disclosed. The membranes comprise a cross-linked poly(vinyl alcohol) polymer coated on a film of cross-linked sulfonated poly(ether ether ketone) adhered to a sheet of hydrophilicitized microporous polyolefin. The microporous polyolefin is typically microporous poly(ethylene). The membranes have improved selectivity with the regard to the rejection of solutes in reverse osmosis and ultrafiltration applications.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: July 19, 2022
    Assignee: HYDROXSYS HOLDINGS LIMITED
    Inventors: Lenka Benacek Craft, Mark Exley, Ashveen Vikash Nand, Dylan Townshend Gifford
  • Patent number: 11384378
    Abstract: The invention provides methods and materials for culturing mammalian cells and harvesting recombinant protein.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: July 12, 2022
    Assignee: AMGEN INC.
    Inventors: Chetan Goudar, Sean Cole, Nicole Le, Henry Lin, Jonathan Lull, Tharmala Tharmalingam
  • Patent number: 11292288
    Abstract: An article having a nanostructured surface and a method of making the same are described. The article can include a substrate and a nanostructured layer bonded to the substrate. The nanostructured layer can include a plurality of spaced apart nanostructured features comprising a contiguous, protrusive material and the nanostructured features can be sufficiently small that the nanostructured layer is optically transparent. A surface of the nanostructured features can be coated with a continuous hydrophobic coating. The method can include providing a substrate; depositing a film on the substrate; decomposing the film to form a decomposed film; and etching the decomposed film to form the nanostructured layer.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: April 5, 2022
    Assignee: UT-BATTELLE, LLC
    Inventors: Tolga Aytug, David Christen, John T. Simpson
  • Patent number: 11247180
    Abstract: The present invention is related to a method for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20) for ultrafiltration applications including the following method steps: (a) feeding at least a material of a substrate (12), at least one material of a functional layer (14, 15) and a bore fluid (36) to a spinneret (30) simultaneously; (b) forming said membranes (10, 20) as a tube-like string (54) in a one-step process in said spinneret (30); (c) thereby assigning a functionality to said functional layer (14, 15) applied on at least one surface (13, 17) of said substrate (12). The invention is also related to a spinneret (30) for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20), using the inventive method, and to a system comprising such a spinneret (30).
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: February 15, 2022
    Assignee: DUPONT SAFETY & CONSTRUCTION, INC.
    Inventors: Menno Bos, Martin Heijnen, Natalia Widjojo
  • Patent number: 11235989
    Abstract: The present invention relates to a composite porous hollow-fiber membrane including a first layer and a second layer which each include a fluororesin-based polymer, in which at least a part of molecular chains of the fluororesin-based polymer is oriented in a longitudinal direction of the composite porous hollow-fiber membrane, the molecular chains of the fluororesin-based polymer have a degree of orientation it in the longitudinal direction of the composite porous hollow-fiber membrane of 0.4 or higher but less than 1.0, the degree of orientation it being calculated with the specific formula.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: February 1, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shun Shimura, Masayuki Hanakawa, Kenta Iwai, Tamotsu Kitade, Masahiro Kimura
  • Patent number: 11186927
    Abstract: A hollow fiber that generally extends in a longitudinal direction is provided. The hollow fiber comprises a hollow cavity that extends along at least a portion of the fiber in the longitudinal direction. The cavity is defined by an interior wall that is formed from a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains. A porous network is defined in the composition that includes a plurality of nanopores.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 30, 2021
    Assignee: Kimberly Clark Worldwide, Inc.
    Inventors: Vasily A. Topolkaraev, Mark M. Mleziva, Ryan J. McEneany, Neil T. Scholl, Antonio J. Carillo
  • Patent number: 11142622
    Abstract: Thermally treated aerogel compositions that include polyamic amides in an amount less than the aerogel compositions that include polyamic amides prior to thermal treatment, and articles of manufacture that include or are manufactured from the aerogel compositions are described.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: October 12, 2021
    Assignee: BLUESHIFT MATERLALS, INC.
    Inventors: Alan D. Sakaguchi, Garrett D. Poe, David J. Irvin, Alysa M. Joaquin, Janae D. Manning
  • Patent number: 11141486
    Abstract: An improved device capable of releasing a drug in response to stimuli such as a glucose concentration is provided. Provided is a drug delivery device, including a porous body such as a hollow fiber having biocompatibility and drug permeability, a stimuli-responsive gel composition filling inside of the porous body, and a drug surrounded by the gel composition inside of the porous body.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: October 12, 2021
    Assignee: National University Corporation Tokyo Medical and Dental University
    Inventors: Akira Matsumoto, Hiroko Matsumoto, Takayoshi Suganami, Miyako Tanaka, Yuji Miyahara
  • Patent number: 11127964
    Abstract: The present invention relates to a method for preparing a porous polyimide film, comprising reacting an aromatic dianhydride with one or more aromatic diamines in a suitable solvent to form poly(amic acid), adding a dehydrated agent of an acid anhydride and an organic base to the reaction mixture to convert the poly(amic acid) to a polyimide precursor, casting the reaction mixture comprising the polyimide precursor onto a solid support to form a film, coagulating the polyimide precursor in a coagulating bath comprising a mixture of a solvent and a non-solvent to develop a porous structure, and drying the coagulated polyimide precursor in air to form the porous polyimide film. A composite membrane comprising same and its use are also provided.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: September 21, 2021
    Assignee: Nanyang Technological University
    Inventors: Xin Wang, Tien Hoa Nguyen
  • Patent number: 11110373
    Abstract: The invention concerns an installation for treating biological liquid by chromatography, extending in a longitudinal direction and comprising a supply valve (20b), a supply pump (30) downstream of the valve, instrument members downstream of the pump among which are at least one distribution valve (81a-c, 82a-c, 83a-c) and at least one device (78a-c, 85a-c, 86a-c) for measuring a physico-chemical parameter of the liquid, at least one chromatography column (99a-c) downstream of the instrument members and of the pipes connecting the valve, the pump, the instrument members and the column, instrument members being associated with the chromatography column and each mounted on at least one dedicated control and actuation platform (80a-c), which extends in a vertical direction relative to the generally longitudinal direction of extension of said installation, and which are disposed substantially above each other on said dedicated control and actuation platform.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: September 7, 2021
    Assignee: EMD Millipore Corporation
    Inventors: Sebastien Cirou, Christine Abouayad El Idrissi
  • Patent number: 11110402
    Abstract: Provided is a method including the steps of producing a melt-kneaded product and discharging the melt-kneaded product. In the step of producing a melt-kneaded product, a thermoplastic resin, a non-solvent and an inorganic compound are mixed and melt-kneaded, wherein the non-solvent does not uniformly dissolve the thermoplastic resin of one-quarter mass at a boiling point or 250° C., whichever is lower.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 7, 2021
    Assignee: ASAHI KASEI KABUSHIK KASHA
    Inventor: Daisuke Okamura
  • Patent number: 11103624
    Abstract: The present disclosure relates to a hemodialysis membrane for the treatment of vascular calcification in hemodialysis patients, especially in chronic hemodialysis patients. The present disclosure further relates to methods of treating vascular calcification in hemodialysis patients, wherein the hemodialysis membrane is characterized in that it comprises at least one hydrophobic polymer and at least one hydrophilic polymer and in that it has a MWRO of between 15 and 20 kD and a MWCO of between 170-320 kD or that the hemodialysis membrane comprises at least one hydrophobic polymer and at least one hydrophilic polymer and has a MWRO of between 8.5 kD and 14.0 kD and a MWCO of between 55 kD and 130 kD.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: August 31, 2021
    Assignees: GAMBRO LUNDIA AB, CHARITÉ UNIVERSITÄTSMEDIZIN BERLIN
    Inventors: Markus Storr, Bernd Krause, Ralf Schindler, Daniel Zickler, Bjoern Hegner
  • Patent number: 11046850
    Abstract: A composition and process to make polyurethane foam using a stable liquid catalyst composition comprising at least one liquid bismuth carboxylate catalyst and at least one liquid dialkyltin dicarboxylate complex are disclosed. The disclosed composition and process yield polyurethane foam having favorable properties, but requiring less metal. The polyurethane foams produced by this catalyst composition and method are useful for laminated boardstock, construction panels, appliance insulation, spray-applied insulation, seat cushions, and mattresses.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: June 29, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Jared Denis Bender, Joel R. Rogers, Jean Louise Vincent, Robert Edward Stevens
  • Patent number: 11033861
    Abstract: Provided is a porous membrane having a high blocking performance suited for filtration application as well as being excellent in water permeability performance, which is capable of providing stable filtering operation over a long period of time. The porous membrane has a cross-sectional pore size index of 40 or more in a region where a membrane thickness position ranges from 0.1 to 0.2 within the membrane thickness which is normalized by defining one surface position as 0 and the other surface position as 1 and divided into ten regions in the membrane thickness direction, the cross-sectional pore size index being calculated by: Cross-Sectional Pore Size Index=(Cross-Sectional Pore Size in the Range)/(Pore Size of the One Surface).
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: June 15, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventor: Yuki Miki
  • Patent number: 11014053
    Abstract: A hollow fiber membrane including a dense layer at least on an inner surface side of the hollow fiber membrane, in which when the inner surface of the hollow fiber membrane is observed under an atomic force microscope, a plurality of groove-like recesses oriented in a lengthwise direction of the hollow fiber membrane are observed, an aspect ratio defined as a ratio of a length to a width of each of the recesses is greater than or equal to 3 and less than or equal to 30, a yield strength of the hollow fiber membrane in a dry state is greater than or equal to 30 g/filament, and a breaking elongation is less than or equal to 20%/filament.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 25, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Kimihiro Mabuchi, Haruhiko Kohyama, Yoshinori Takii
  • Patent number: 11007492
    Abstract: Co-polyimide membranes for separating components of sour natural gas including at least three distinct moieties polymerized together, the moieties including a 2,2?-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) based moiety; a 2,4,6-trimethyl-m-phenylenediamine (DAM) based moiety; and at least one component selected from the group consisting of: a 4,4?-(hexafluoroisopropylidene)dianiline (6FpDA) based moiety; a 9,9-bis(4-aminophenyl) fluorene (CARDO) based moiety; a 2,3,5,6-tetramethyl-1,4-phenylenediamine (durene diamine) based moiety; a 2,2?-bis(trifluoromethyl)benzidine (ABL-21) based moiety; a 3,3?-dihydroxybenzidine based moiety; and a 3,3?-(hexafluoroisopropylidene)dianiline based moiety.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: May 18, 2021
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Garba Oloriegbe Yahaya, Ali Hayek, Abdulkarim Alsamah, Ahmad Bahamdan
  • Patent number: 11007491
    Abstract: Co-polyimide membranes for separating components of sour natural gas including at least three distinct moieties polymerized together, the moieties including a 2,2?-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) based moiety; a 4,4?-(hexafluoroisopropylidene)dianiline (6FpDA) based moiety; and at least one component selected from the group consisting of: a 9,9-bis(4-aminophenyl) fluorene (CARDO) based moiety; a 2,3,5,6-tetramethyl-1,4-phenylenediamine (durene diamine) based moiety; a 2,2?-bis(trifluoromethyl)benzidine (ABL-21) based moiety; a 3,3?-dihydroxybenzidine based moiety; and a 3,3?-(hexafluoroisopropylidene)dianiline based moiety.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: May 18, 2021
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Garba Oloriegbe Yahaya, Ali Hayek, Abdulkarim Alsamah, Ahmad Bahamdan
  • Patent number: 11001691
    Abstract: Provided are: a porous polyether sulfone film having macrovoids and having excellent dimensional stability; and a production method therefor. Provided is a porous polyether sulfone film having a surface layer (a), a surface layer (b), and a macrovoid layer interposed between the surface layer (a) and the surface layer (b). The macrovoid layer has a partition wall joined to the surface layers (a) and (b) and a plurality of macrovoids surrounded by the partition wall and the surface layers (a) and (b). The surface layer (a) and the surface layer (b) have pores connected to the macrovoids.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: May 11, 2021
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Shusei Ohya, Makoto Matsuo, Keita Bamba
  • Patent number: 10974204
    Abstract: A porous membrane has a thickness of 150 ?m or greater. The pore diameters of a first surface are smaller than the pore diameters of a second surface. The average value of the pore diameters of the first surface is 60 nm or less, and the coefficient of variation of the pore diameters is 10% or greater and 50% or less.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: April 13, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yuki Miki, Daisuke Okamura, Hirokazu Fujimura, Masatoshi Hashino
  • Patent number: 10961349
    Abstract: Embodiments of the present disclosure provide for an ortho (o)-hydroxy-functionalized diamine, a method of making an o-hydroxy-functionalized diamine, an o-hydroxy-functionalized diamine-based polyimide, a method of making an o-hydroxy-functionalized diamine imide, methods of gas separation, and the like.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 30, 2021
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Xiaohua Ma, Bader S. Ghanem, Ingo Pinnau
  • Patent number: 10964927
    Abstract: The present application relates to a separator and an electrochemical device. The present application provides a separator comprising: a porous substrate and a porous layer, wherein the porous layer is disposed on a surface of the porous substrate and comprises inorganic particles and a binder. The porous substrate has an absolute plastic deformation rate in a first direction ranging from about 40% to about 1800%. By using the separator provided in the present application, the safety performance of lithium ion batteries is improved.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 30, 2021
    Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    Inventors: Kebing Guo, Dongyang Guo, Gengjin Kong, Xinghua Tao
  • Patent number: 10946345
    Abstract: Hydrophobic hollow-fiber membrane made from a vinylidene fluoride polymer with a wall and a wall thickness, an outer surface on its outer side, an inner surface on its inner side and facing its lumen and adjacent to the inner surface a supporting layer having a structure that is substantially isotropic across the wall thickness, the supporting layer extending over at least 80% of the wall thickness and comprising pores having an average diameter of less than 1 ?m, and wherein the hollow-fiber membrane has pores on its outer surface and on its inner surface, characterized in that the vinylidene fluoride polymer has a weight-average molecular weight MW in the range from 550 000 to 700 000 daltons and a polydispersivity greater than 3.0; the pores in the outer and in the inner surface are formed like islands and have a maximum ratio of their longitudinal extension to the transverse extension of 10; the porosity lies in the range from 50 to 90 vol.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: March 16, 2021
    Assignee: EM Innovative Properties Company
    Inventors: Oliver Schuster, Quan Huang, Ngoc-Phung Duong, Karl Bauer, Wolfgang Ansorge
  • Patent number: 10940445
    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: June 7, 2018
    Date of Patent: March 9, 2021
    Assignee: THE UNIVERSITY OF HONG KONG
    Inventors: Kaimin Shih, Xiao-Yan Li, Xiao-Mao Wang, Tong Zhang
  • Patent number: 10926226
    Abstract: The present invention is directed to methods of fabricating novel cross-linked membranes and to cross-linked membranes produced by the disclosed methods. Specifically, methods of fabricating cross-linked membranes according to the present invention may comprise direct crosslinking, crosslinking by addition of a small molecule, interfacial crosslinking of free-standing film, and interfacial crosslinking on a solid support.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: February 23, 2021
    Assignees: ExxonMobil Research & Engineering Company Company, Georgia Tech Research Corporation
    Inventors: Nicholas Bruno, Ronita Mathias, Yao Ma, Kirstie Thompson, Breanne Hamlett, Ryan P. Lively, Huaxing Zhou, M. G. Finn, Dhaval Bhandari, Craig McKay, Melinda Jue
  • Patent number: 10897217
    Abstract: A device may receive a current measurement of a motor identifying a plurality of component currents associated with a plurality of phases. The device may determine a position estimate for the motor based on the plurality of component currents associated with the plurality of phases. The device may control the motor based on the plurality of component currents.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 19, 2021
    Assignee: Caterpillar Inc.
    Inventors: Ahmed Khalil, Sam Han, James Thorne, Jesse Gerdes, Jackson Wai, Carlos Nino Baron, Sajan Abdul
  • Patent number: 10888823
    Abstract: A semipermeable asymmetric hollow fiber membrane is provided, based on a hydrophobic polymer, such as polyethersulfone or polysulfone, and on a hydrophilic polymer, such as PVP. The PVP polymer comprises a high molecular weight component and a low molecular weight component. The membrane has a significantly improved permeability and selectivity, based on its structure, composition, and the method of manufacture of the membrane A process for manufacturing such a membrane by a solvent phase inversion spinning process is also provided.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: January 12, 2021
    Assignee: GAMBRO LUNDIA AB
    Inventors: Reinhold Buck, Jenny Deibert, Arnd Wochner
  • Patent number: 10882011
    Abstract: There is provided a composite hollow fiber membrane for gas and vapour separation comprising: a porous membrane substrate; and a selective layer of cross-linked polydimethylsiloxane (PDMS) provided on a surface of the porous membrane substrate, wherein the molecular weight of the cross-linked PDMS is ?100 kg/mol. There is also provided a method of forming the composite hollow fiber membrane, and a method of forming the cross-linked polydimethylsiloxane (PDMS) having a molecular weight ?100 kg/mol.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: January 5, 2021
    Assignee: National University of Singapore
    Inventors: Canzeng Liang, Tai-Shung Chung
  • Patent number: 10835874
    Abstract: A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous structure are also disclosed.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 17, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Kosaku Takeuchi, Dai Kondo, Kentaro Tanaka, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10767280
    Abstract: High permeability curly fibers with enhanced fiber strength are produced by mercerizing cellulosic fibers. The fibers have relatively high values for curl, kink level, wet tensile strength, and bulk density when compared with current fibers. The disclosed fibers can be used in a wide range of applications including paper products such as filters.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: September 8, 2020
    Assignee: GP CELLULOSE GMBH
    Inventors: Alan Jeffrey Campbell, Sonja McNeil Fields, Danny R. Moore, Stephen Skirius
  • Patent number: 10751671
    Abstract: The porous hollow fiber membrane of the present invention contains a thermoplastic resin, and includes a surface having a surface porosity of 32 to 60% and a fine pore diameter of 300 nm or less, and has a compressive strength of 0.7 MPa or more. The porous hollow fiber membrane of the present invention may include at least two layers, and in this case, the surface of one layer has a thickness of backbone of 0.3 to 20 ?m and a fine pore diameter of 0.3 to 10 ?m, and the surface of the other layer has a surface porosity of 32 to 60% and a fine pore diameter of 0.05 to 0.3 ?m.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: August 25, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Daisuke Okamura, Yuki Miki, Masatoshi Hashino
  • Patent number: 10717835
    Abstract: A block copolymer, an ion-exchange membrane including the block copolymer and a method of preparing the block copolymer are provided. The block copolymer may include a hydrophobic repeating unit and a hydrophilic repeating unit.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 21, 2020
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Byungchan Bae, Sung-Dae Yim, Chang-Soo Kim, Won-Yong Lee, Gu-Gon Park, Tae-Hyun Yang, Seok-Hee Park, Minjin Kim, Young-Jun Sohn, Seung-Gon Kim, Dong Won Shin, Adam Febriy-Anto Nugraha
  • Patent number: 10709612
    Abstract: Odor control articles (10) including hydrophobic polymers of intrinsic porosity (HPIM) and their use in personal care products and hygienic products is disclosed. The odor control article (10) includes a HPIM and a colorant. The odor control article (10) may be applied to a substrate (11), and more specifically to a liquid absorbent member (30), to form an odor-absorbing member (20). The substrate (11) may absorb liquid. The odor-absorbing member (20) may be placed in such products as diapers (200), incontinence pads (60) and refrigerator pads. A method of making an odor control suspension with HPIMs including the use of surfactants is also disclosed. The odor control suspension may also be applied to a substrate (11).
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: July 14, 2020
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Xuedong Song, Davis Dang H. Nhan, John Gavin MacDonald, Richard Arnold Borders
  • Patent number: 10684220
    Abstract: A process of in-situ detection of hollow fiber formation includes immersing a plurality of individual glass fibers in an index-matching material. The index-matching material has a first refractive index that substantially matches a second refractive index of the glass fibers. The process also includes exposing the individual glass fibers to a light source during immersion in the index-matching material. The process further includes utilizing one or more optical components to collect optical data for the individual glass fibers during immersion in the index-matching material. The process also includes determining, based on the optical data, that a particular glass fiber of the plurality of individual glass fibers includes a hollow fiber.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: June 16, 2020
    Assignee: International Business Machines Corporation
    Inventors: Eric J. Campbell, Bruce J. Chamberlin, Sarah K. Czaplewski, Scott B. King, Joseph Kuczynski
  • Patent number: 10661230
    Abstract: The present disclosure relates to a dialyzer comprising a bundle of semipermeable hollow fiber membranes which is suitable for blood purification, wherein the dialyzer has an increased ability to remove larger molecules while at the same time it is able to effectively remove small uremic toxins and efficiently retain albumin and larger proteins. The invention also relates to using said dialyzer in hemodialysis.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 26, 2020
    Assignee: GAMBRO LUNDIA AB
    Inventors: Markus Hornung, Bernd Krause, Markus Storr, Philipp Herbst, Arnd Wochner, Adriana Boschetti-De-Fierro, Manuel Voigt, Carina Zweigart, Joachim Loercher, Reinhold Buck, Heinrich Behr, Werner Beck
  • Patent number: 10661231
    Abstract: The present disclosure relates to semipermeable membranes which are suitable for blood purification, e.g. by hemodialysis, which have an increased ability to remove larger molecules while at the same time effectively retaining albumin. The membranes are characterized by a molecular retention onset (MWRO) of between 9.0 kD and 14.5 kD and a molecular weight cut-off (MWCO) of between 55 kD and 130 kD as determined by dextran sieving curves and can be prepared by industrially feasible processes excluding a treatment with salt before drying. The invention therefore also relates to a process for the production of the membranes and to their use in medical applications.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 26, 2020
    Assignee: GAMBRO LUNDIA AB
    Inventors: Adriana Boschetti-De-Fierro, Manuel Voigt, Bernd Krause, Markus Hornung, Markus Storr, Heinrich Behr, Werner Beck, Carina Zweigart, Reinhold Buck, Philipp Herbst, Joachim Loercher, Arnd Wochner
  • Patent number: 10639595
    Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 5, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Koichi Takada, Gohei Yamamura, Ryuichiro Hiranabe, Hiroki Tomioka
  • Patent number: 10604625
    Abstract: A poly(phenylene ether) can be prepared by a method that includes reacting 2,6-dimethylphenol in the presence of toluene, oxygen, copper ion, bromide ion, and N,N?-di-tert-butylethylenediamine to form a poly(phenylene ether). The mole ratio of 2,6-dimethylphenol to copper ion is 160:1 to 300:1, the mole ratio of N,N?-di-tert-butylethylenediamine to copper ion is 1.5:1 to 3:1, and the mole ratio of atomic oxygen to 2,6-dimethylphenol is 0.9:1 to 1.5:1. The process can produce poly(phenylene ether) having a high molecular weight and a high incorporated amine content.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 31, 2020
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventor: Madhav Ghanta
  • Patent number: 10589229
    Abstract: A central tube assembly for a filter cartridge and a manufacturing method for the central tube assembly are provided. The central tube assembly includes a first half-tube defines a first flow passage, and having a first water inlet at an end thereof and a water output hole in a side wall thereof a filtering membrane bent to form a first membrane layer and a second membrane layer, the first half-tube being disposed between the first membrane layer and the second membrane layer; an input-water filtering net connected to the first half-tube and disposed between the first membrane layer and the second membrane layer a second half-tube disposed outside of a bending of the filtering membrane, defining a second flow passage, and having a water input hole in a side wall thereof and a first water outlet at an end thereof and a produced-water filtering net.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 17, 2020
    Inventors: Guodong Song, Xuegang Cai, Peng Gui
  • Patent number: 10578551
    Abstract: A process of in-situ detection of hollow fiber formation includes immersing a plurality of individual glass fibers in an index-matching material. The index-matching material has a first refractive index that substantially matches a second refractive index of the glass fibers. The process also includes exposing the individual glass fibers to a light source during immersion in the index-matching material. The process further includes utilizing one or more optical components to collect optical data for the individual glass fibers during immersion in the index-matching material. The process also includes determining, based on the optical data, that a particular glass fiber of the plurality of individual glass fibers includes a hollow fiber.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 3, 2020
    Assignee: International Business Machines Corporation
    Inventors: Eric J. Campbell, Bruce J. Chamberlin, Sarah K. Czaplewski, Scott B. King, Joseph Kuczynski
  • Patent number: 10478782
    Abstract: Problems that the invention is to solve is to provide a composite hollow fiber membrane being excellent in separation performance and permeation performance, having high membrane strength, and capable of being easily produced, and a method for producing the same. The present invention relates to a composite hollow fiber membrane including at least a layer (A) and a layer (B), in which the composite hollow fiber membrane has an outer diameter of 20 to 350 ?m and an inner diameter of 14 to 250 ?m, the tensile modulus of the composite hollow fiber membrane is from 1,000 to 6,500 MPa, the layer (A) contains a cellulose ester, the thickness of the layer (A) is from 0.01 to 5 ?m, and the open pore ratio HA of the layer (A) and the open pore ratio HB of the layer (B) satisfy HA<HB.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 19, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Gohei Yamamura, Koichi Takada, Ryuichiro Hiranabe, Hiroki Tomioka
  • Patent number: 10458979
    Abstract: The present invention relates to an artificial cell membrane system comprising at least one membrane protein carrier associated with at least one membrane protein, wherein the at least one membrane protein carrier comprises or consists of a polymeric vesicle or a polymeric planar structure, and a solid support freely suspended in a fluid medium, wherein the at least one membrane protein carrier is attached to a surface of the solid support. A method of forming the artificial cell membrane system, and use of the artificial cell membrane system as a reagent are also provided.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: October 29, 2019
    Assignee: Agency for Science, Technology and Research
    Inventors: Jinting Cheng, Madhavan Nallani
  • Patent number: 10421046
    Abstract: An method of making a porous asymmetric membrane involves dissolving a poly(phenylene ether), poly(phenylene ether) copolymer, polyethersulfone, polysulfone, polyphenylsulfone, polyimide, polyetherimide, polyvinylidene fluoride, or a combination thereof in a water-miscible polar aprotic solvent to provide a membrane-forming composition; and phase-inverting the membrane-forming composition in a first non-solvent composition composed of water, a water-miscible polar aprotic solvent, or a mixture thereof, and a polymer additive dissolved in the first non-solvent composition. The method can be a method of making a hollow fiber by coextrusion through a spinneret having an annulus and a bore, including coextruding the membrane-forming composition through the annulus, and the first non-solvent composition through the bore, into a second non-solvent composition composed of water, a water-miscible polar aprotic solvent, or a mixture thereof to form the hollow fiber.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: September 24, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Albin Peter Berzinis, Pooja Bajaj, Rachel Elizabeth Halbfinger
  • Patent number: 10406487
    Abstract: Provided is a vinylidene fluoride porous hollow fiber membrane excellent in fouling resistance due to reduced organic substance absorbance, preferably having preferable pore structures to enable to have high permeability, high fractionation performance, and good process controllability. The membrane includes a vinylidene fluoride resin and 0.5 to 10% by weight of a hydrophilic resin, having a ratio Pi/Po of 2.5 to 50 where Pi and Po denote an average pore size on inner surface and an average pore size on outer surface, respectively, and having a pure water permeation rate satisfying the following formula: (FLUXd/FLUXw)×100?40.0 wherein FLUXd represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a dry state, and FLUXw represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a wet state.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 10, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Arata Ishiodori, Kensaku Komatsu, Youhei Yabuno
  • Patent number: 10352835
    Abstract: An article that can be used for biomaterial capture comprises (a) a porous substrate; and (b) borne on the porous substrate, a polymer comprising interpolymerized units of at least one monomer consisting of (1) at least one monovalent ethylenically unsaturated group, (2) at least one monovalent ligand functional group selected from acidic groups, basic groups other than guanidino, and salts thereof, and (3) a multivalent spacer group that is directly bonded to the monovalent groups so as to link at least one ethylenically unsaturated group and at least one ligand functional group by a chain of at least six catenated atoms.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 16, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Catherine A. Bothof, George W. Griesgraber, Semra Colak Atan, James I. Hembre, Robert T. Fitzsimons, Jr.
  • Patent number: 10322220
    Abstract: A method for extracorporeal blood treatment using a medical device including at least a dialyzer device, with the following steps: start of blood treatment by means of hemodialysis on the basis of default values for the hemodialysis; determination of current values or ratios of at least one blood flow, an ultrafiltration quantity, a substitution quantity or a type of substitution; recording of a therapy progress on the basis of an output signal of a sensor means; determination of a time of formation of a secondary membrane on the dialyzer by determination of a cross rate in the dialyzer device; change from the hemodialysis to a hemodiafiltration with post-dilution after a predetermined period of time has elapsed; and regulation of the substitution quantity during hemodiafiltration with post-dilution. Corresponding tools for carrying out the method are arranged in a device for extracorporeal blood treatment.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: June 18, 2019
    Assignee: B. Braun Avitum AG
    Inventor: Heiko Riemenschneider
  • Patent number: 10319973
    Abstract: To afford a nonaqueous electrolyte secondary battery separator that is not easily curled, a laminated body of the present invention includes: a porous base material containing a polyolefin-based resin as a main component; and a porous layer on at least one surface of the porous base material, the porous layer containing a polyvinylidene fluoride-based resin, the porous film having a lightness (L*) of not less than 83 and not more than 95 and a white index (WI) of not less than 85 and not more than 98, the polyvinylidene fluoride-based resin containing crystal form ? in an amount of not less than 34 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the polyvinylidene fluoride-based resin.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshihiko Ogata, Junji Suzuki, Chikara Murakami
  • Patent number: 10307513
    Abstract: Provided herein are methods of making a biomimetic hydrogel scaffold comprising a polycation and a polyanion. Also provided are anisotropic biomimetic hydrogel scaffold compositions suitable for use in tissue growth, including bone, muscle, and nerve growth an optionally comprising a carbon allotrope such as graphene. Also provided are methods of producing tissue comprising growing tissue on the biomimetic hydrogel scaffold comprising a polycation and a polyanion.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 4, 2019
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventor: Shilpa Sant
  • Patent number: 10301585
    Abstract: A filter assembly for separating microcarriers from a fluid medium includes a collapsible container bounding a sterile compartment adapted to hold a fluid. An inlet port is attached to the container through which fluid flows into the compartment. An outlet port is attached to the container through which fluid flows out of the compartment. A filter is disposed within the compartment, the filter dividing the compartment into an inlet chamber that is fluidly coupled with the inlet port and an outlet chamber that is fluidly coupled with the outlet port, the filter allowing a medium to pass therethrough but preventing microcarriers disposed in the medium from passing therethrough.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 28, 2019
    Assignee: Life Technologies Corporation
    Inventors: Jeremy K. Larsen, Jon Q. Coleman, David S. Rowley
  • Patent number: 10265452
    Abstract: The present technology provides microfabricated filtration devices, methods of making such devices, and uses for microfabricated filtration devices. The devices may allow diffusion to occur between two fluids with improved transport resistance characteristics as compared to conventional filtration devices. The devices may include a compound structure that includes a porous membrane overlying a support structure. The support structure may define a cavity and a plurality of recesses formed in a way that can allow modified convective flow of a first fluid to provide improved diffusive transport between the first fluid and a second fluid through the membrane.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: April 23, 2019
    Assignee: The Regents of the University of California
    Inventors: Rishi Kant, Shuvo Roy, Benjamin Chui, Kenneth G. Goldman
  • Patent number: 10265663
    Abstract: The present invention relates to a method of forming a polyarylene ether sulfone polymer by converting a reaction mixture (RG) comprising a dihalogen component (A1), a dihydroxy component (B1) and potassium carbonate (C1) having a volume-average particle size of <25 ?m. The present invention further relates to the polyarylene ether sulfone polymers obtainable by said method, to products obtainable from said polyarylene ether sulfone polymer and to membranes formed from said polyarylene ether sulfone polymer.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: April 23, 2019
    Assignee: BASF SE
    Inventors: Martin Weber, Christian Maletzko, Joerg Erbes, Tobias Kortekamp, Bastiaan Bram Pieter Staal, Thomas Heil