Mark A Tapsak, Rathbun K Rhodes, Mark C Shults, Jason D McClure: Techniques to improve polyurethane membranes for implantable glucose sensors. DexCom, Knobbe Martens Olson & Bear, June 5, 2007: US07226978 (556 worldwide citation)

The invention provides an implantable membrane for regulating the transport of analytes therethrough that includes a matrix including a first polymer; and a second polymer dispersed throughout the matrix, wherein the second polymer forms a network of microdomains which when hydrated are not observab ...

John E Bacino, Alex R Hobson, Jason J Strid: Porous PTFE materials and articles produced therefrom. Gore Enterprise Holdings, Carol A Lewis White, December 11, 2007: US07306729 (111 worldwide citation)

Novel porous PTFE membranes are described possessing a unique combination of high strength, low flow resistance, and small pore size. Additionally, unique constructions with superior filtration and venting properties incorporating porous PTFE membranes are described.

David B Pall: Collapse-resistant corrugated filter element. Pall Corporation, May 15, 1979: US04154688 (96 worldwide citation)

A corrugated tubular filter element is provided, resistant to corrugation collapse under high differential pressure, although formed of filter sheet material susceptible to such collapse, comprising, in combination, filter sheet material enclosed in a dual layer of more open foraminous sheet materia ...

Diane L Aunet, Gradimir G Gerogevich, Tzyy Wen Jeng, Gary M Oosta, Neal A Siegel: Methods and devices for the separation of plasma or serum from whole blood. Abbott Laboratories, Priscilla E Porembski, Daniel W Collins, Thomas D Brainard, June 12, 1990: US04933092 (85 worldwide citation)

A device and method for permitting the separation of plasma or serum from whole blood. The device comprises a matrix of hydrophilic sintered porous material to which at least one red blood cell agglutinating agent has been applied. According to a first method of using the device, a sample of whole b ...

Shung Ho Chang, Frederick E Regnier: Chromatographic supports and methods and apparatus for preparing the same. Purdue Research Foundation, John R Nesbitt, June 14, 1977: US04029583 (85 worldwide citation)

Chromatographic supports are disclosed as are methods and apparatus for preparing the same. The support includes an inorganic support matrix that is capable of reacting with silanols, a stationary phase, and an intermediate silane coupling agent having a silicon functional group capable of bonding t ...

Anthony E Allegrezza Jr, Ellen C Bellantoni: Porous membrane formed from interpenetrating polymer network having hydrophilic surface. Millipore Corporation, Paul J Cook, Andrew T Karnakis, October 27, 1992: US05158721 (83 worldwide citation)

A porous membrane is formed from an interpenetrating polymer network of a hydrophobic polymer and a polymerized and crosslinked hydrophilic monomeric composition. A solution of the polymer and monomeric composition is cast, exposed to ultraviolet radiation, coagulated and dried. The resulting dried ...

Peter J Degen, Thomas C Gsell: Self-supporting structures containing immobilized inorganic sorbent particles and method for forming same. Pall Corporation, Leydig Voit & Mayer, May 12, 1987: US04665050 (76 worldwide citation)

A self-supporting structure comprising an inorganic sorbent and method for preparing is described in which the self-supporting structure is substantially free of sorbent fines and the sorption characteristics of the sorbent particles is retained. The process for immobilizing the sorbent particles in ...

Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, July 24, 2007: US07247238 (65 worldwide citation)

Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...

Chunqing Liu, Stephen T Wilson: Mixed matrix membranes incorporating microporous polymers as fillers. UOP, Mark Goldberg, August 12, 2008: US07410525 (63 worldwide citation)

The present invention is for a polymer/polymer mixed matrix membrane and the use of such membranes in gas separation applications. More specifically, the invention involves the preparation of polymer/polymer mixed matrix membranes incorporating soluble polymers of intrinsic microporosity as micropor ...

Goldberg Bruce S: Microporous sub-micron filter media. Amerace Esna Corporation, January 21, 1975: US3862030 (62 worldwide citation)

Microporous fluid-permeable filter media are provided which are especially adapted for removing microscopic or ultrafine particles of sub-micron size from the medium in which they are suspended. The microporous fluid-permeable sub-micron filter media of the present invention comprise a polymeric res ...