Patents Assigned to Pall Corporation
  • Membrane comprising self-assembled block copolymer and process for producing the same by hybrid casting (Ib)
    Patent number: 9592477
    Abstract: Disclosed are membranes formed from self-assembling diblock copolymers of the formula (I): wherein R1-R4, n, and m are as described herein, which find use in preparing porous membranes. Embodiments of the membranes contain the diblock copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such a membrane which involves hybrid casting a polymer solution containing the diblock copolymer to obtain a thin film, followed by evaporation of some of the solvent from the thin film, and coagulating the resulting this film in a bath containing a nonsolvent or poor solvent for the diblock copolymer.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: March 14, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, David Lukas Grzenia
  • Self-assembled structure and membrane comprising block copolymer and process for producing the same by spin coating (IIIa)
    Patent number: 9593218
    Abstract: Disclosed are self-assembled structures formed from self-assembling diblock copolymers of the formula (I): wherein R1-R4, n, and m are as described herein, which find use in preparing nanoporous membranes. In embodiments of the self-assembled structure, the block copolymer self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such self-assembled structure which involves spin coating a polymer solution containing the diblock copolymer to obtain a thin film, followed by solvent annealing of the film. Further disclosed is a method of preparing porous membranes from the self-assembled structures.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: March 14, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, Selina Shi
  • Membrane comprising self-assembled block copolymer and process for producing the same by hybrid casting (IIb)
    Patent number: 9592476
    Abstract: Disclosed are membranes formed from self-assembling block copolymers, for example, a diblock copolymer of the formula (I): wherein R1-R4, n, and m are as described herein, which find use in preparing nanoporous membranes. Embodiments of the membranes contain the block copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves hybrid casting a polymer solution containing the block copolymer to obtain a thin film, followed by evaporation of some of the solvent from the thin film, and coagulating the resulting this film in a bath containing a nonsolvent or poor solvent for the block copolymer.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: March 14, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, David Lukas Grzenia
  • Filter elements
    Patent number: 9579592
    Abstract: A filter element has a pleated composite and first and second end elements mounted to opposite first and second ends of the filter element. The pleated composite has a filter medium layer and a grooved mesh drainage layer pleated with the filter medium layer. The grooved mesh drainage layer has a plurality of strands and a plurality of grooves formed in the strands. The grooved mesh drainage layer directs fluid via the grooves to or from the filter medium layer and the filter medium layer removes one or more substances from fluid flowing through the filter medium layer.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: February 28, 2017
    Assignee: Pall Corporation
    Inventor: Michael Whitlock
  • Charged hollow fiber membrane having hexagonal voids
    Patent number: 9561473
    Abstract: Disclosed is a charged hollow fiber membrane having hexagonal voids for use in high throughput applications. The membrane includes: (i) an inner surface; (ii) an outer surface; (iii) a porous bulk disposed therebetween, wherein the porous bulk comprises at least a first region including: a) a first set of pores having a controlled pore size and having outer rims; b) a second set of pores connecting the outer rims of the first set of pores, wherein the pore size of the first set of pores is greater than the pore size of the second set of pores; and c) a polymer matrix supporting the first set of pores; and (iv) at least one charged zone disposed on the inner surface, on the outer surface, and/or in the porous bulk hollow fiber membrane.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: February 7, 2017
    Assignee: Pall Corporation
    Inventors: Amarnauth Singh, Yolando David, Shane Edward Harton
  • HYDROPHILIC POROUS POLYTETRAFLUOROETHYLENE MEMBRANE (II)
    Publication number: 20170028362
    Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer of the formula (I): wherein Rf, Rh1, Rh2, Y, m, n, and o are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 2, 2017
    Applicant: PALL CORPORATION
    Inventors: Marcin STASIAK, Hassan AIT-HADDOU, Frank O. ONYEMAUWA, Amarnauth SINGH
  • HYDROPHILIC POROUS POLYTETRAFLUOROETHYLENE MEMBRANE (I)
    Publication number: 20170028363
    Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer, for example, a copolymer of the formula: wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 2, 2017
    Applicant: PALL CORPORATION
    Inventors: Khaled Abdel-Hakim Helmy AAMER, Hassan AIT-HADDOU, Marcin STASIAK, Amarnauth SINGH
  • SELF-WETTING POROUS MEMBRANES (II)
    Publication number: 20160375412
    Abstract: Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH2?C(R1)(R2), wherein R1 and R2 are as described herein, and B is polyethersulfone, wherein segments B and A are linked through an oxygen atom. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.
    Type: Application
    Filed: June 25, 2015
    Publication date: December 29, 2016
    Applicant: PALL CORPORATION
    Inventors: Marcin STASIAK, Hassan AIT-HADDOU
  • SELF-WETTING POROUS MEMBRANES (I)
    Publication number: 20160375409
    Abstract: Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH2?C(R1)(R2), wherein R1 and R2 are as described herein, and B is an aromatic hydrophobic polymeric segment, wherein segments B and A are linked through an amidoalkylthio group. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.
    Type: Application
    Filed: June 25, 2015
    Publication date: December 29, 2016
    Applicant: PALL CORPORATION
    Inventors: Marcin STASIAK, Hassan AIT-HADDOU
  • Filter manifold
    Patent number: 9527021
    Abstract: A filter manifold is provided for filtering particulates in fluid and gas streams. The filter manifold seals the inlet and outlet valves in a closed position until a filter capsule is loaded into a carriage assembly. The inlet and outlet valves are opened only when a filter capsule is properly loaded into the carriage assembly.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 27, 2016
    Assignee: Pall Corporation
    Inventors: Anthony William Gatica, Brian Anthony Palermo, Mark William Foohey
  • Catalytic filter module and catalytic filter system comprising same
    Patent number: 9504958
    Abstract: A catalytic filter module for gaseous fluids is disclosed comprising a block-shaped filter element, a catalytic element and a clean gas collecting and discharge arrangement. The catalytic element is substantially coextensive with the filter element, said filter element has a feed face and on its opposite side a discharge face from which filtrate exits to be received by the upstream face of the catalytic element. The gaseous fluid exits the catalytic element as clean gas at a clean gas face thereof opposite to the upstream face. The clean gas collecting and discharge arrangement comprises one or more channels extending across the whole clean gas face of the catalytic element deflecting and directing the clean gas flow transverse to the vertical of the clean gas face of the catalytic element to a clean gas discharge opening of the filter module at a side face thereof.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 29, 2016
    Assignee: Pall Corporation
    Inventor: Steffen Heidenreich
  • Filters
    Patent number: 9492770
    Abstract: A filter has first and second fittings, a permeable filter medium, and a housing. The housing defines a fluid flow path within the housing between the first and second fittings, and the permeable filter medium is arranged in the fluid flow path to remove one or more substances from a fluid flowing along the fluid flow path. A finger hold is positioned in an upper region of the housing, the finger hold defining a space that is sufficient to allow one or more fingers of an operator to fit in the space and grasp the filter.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: November 15, 2016
    Assignee: Pall Corporation
    Inventors: Mark William Foohey, Anthony William Gatica, Vincent Lam, Jacob Peter Vanderheyden, Tatsuya Hoshino
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (VI)
    Publication number: 20160317982
    Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula (I) or (II): wherein Rf, Rh, Ra, Y, m, and n are as described herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 3, 2016
    Applicant: PALL CORPORATION
    Inventors: Marcin STASIAK, Hassan AIT-HADDOU
  • Robust polymeric membrane
    Patent number: 9469737
    Abstract: Hydrophilic porous membranes comprising a random copolymer of: (a) 2-hydroxyethyl methacrylate of formula (I): (b) an ethylene glycol dimethacrylate of formula (II): and (c) 1,1,1-trimethylolpropane trimethacrylate of formula (III): and a hydrophobic polymer; filters including the membranes, and methods of making and using the membranes, are disclosed.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: October 18, 2016
    Assignee: Pall Corporation
    Inventors: Erik M. Heidenreich, Xuemei Liang, Binbing Han
  • Self-assembled structure and membrane comprising block copolymer and process for producing the same by spin coating (IVa)
    Patent number: 9469733
    Abstract: Disclosed are self-assembled structures prepared from block copolymers, for example, diblock copolymers of the formula (I): wherein R1-R4, n, and m are as described herein, which find use in preparing nanoporous membranes. In an embodiment, the block copolymer self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such self-assembled structures which involves spin coating a polymer solution containing the block copolymer to obtain a thin film, followed by solvent annealing of the film. Further disclosed is a method of preparing porous membranes from the self-assembled structures.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: October 18, 2016
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, Selina Shi
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (II)
    Publication number: 20160288059
    Abstract: Disclosed are copolymers which are useful in hydrophilically modifying porous fluoropolymer supports. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying porous fluoropolymer surfaces, and hydrophilic fluoropolymer porous membranes prepared therefrom. Also disclosed is a method of filtering fluids by the use of the hydrophilic fluoropolymer porous membranes.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: PALL CORPORATION
    Inventors: Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Hassan AIT-HADDOU
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (IV)
    Publication number: 20160288062
    Abstract: Disclosed are copolymers which are useful in hydrophilically modifying fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying fluoropolymer membrane surfaces, and hydrophilic fluoropolymer porous membranes prepared from the copolymers.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: PALL CORPORATION
    Inventors: Hassan AIT-HADDOU, Khaled Abdel-Hakim Helmy AAMER, Marcin STASIAK
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (I)
    Publication number: 20160288061
    Abstract: Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula: Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: PALL CORPORATION
    Inventors: Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Hassan AIT-HADDOU
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (III)
    Publication number: 20160288063
    Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic porous fluoropolymer membranes prepared from the copolymers, and a method of filtering fluids by the use of the hydrophilic porous fluoropolymer membranes.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: PALL CORPORATION
    Inventors: Hassan AIT-HADDOU, Khaled Abdel-Hakim Helmy AAMER, Jian QIU, Frank Okezie ONYEMAUWA, Marcin STASIAK
  • HYDROPHILICALLY MODIFIED FLUORINATED MEMBRANE (V)
    Publication number: 20160288060
    Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer porous membranes, for example, a copolymer of the formula: wherein R, n, m, and x are as defined herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, and composite hydrophilic fluoropolymer porous membranes prepared from the copolymers.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Applicant: PALL CORPORATION
    Inventors: Khaled Abdel-Hakim Helmy AAMER, Hassan AIT-HADDOU