1
Robert Walton Gore: Very highly stretched polytetrafluoroethylene and process therefor. W L Gore & Associates, E A Uebler, June 8, 1976: US03962153 (266 worldwide citation)

This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It can be used to produce all kinds of shaped a ...


2
Etsuo Yamazaki: Production of porous sintered PTFE products. W L Gore & Associates, E A Uebler, J S Campbell, August 29, 1978: US04110392 (106 worldwide citation)

The present invention provides porous polytetrafluoroethylene ("PTFE") products having fine pores and high porosity, the pore diameter being less than about 1,500A, generally ranging from about 100A to 1,000A. The process for the manufacture of these products comprises: (a) shaping of a lubricated P ...


3
Sadamasa Ochiai: Method for detecting liquid leak and a cable therefor. E A Uebler, September 21, 1976: US03981181 (46 worldwide citation)

In the method for detecting liquid leak of the present invention, the inventive cable, i.e., a parallel pair or a coaxial cable insulated with porous polymer material, is placed along or under a storage and/or transport means for conveying chemicals. If leakage occurs, the leaked liquid permeates in ...


4
Thomas E Denny: Fibrillated polytetrafluoroethylene woven filter fabric. W L Gore & Associates, E A Uebler, J S Campbell, May 24, 1977: US04025679 (42 worldwide citation)

The product of the present invention is a fabric woven from oriented polytetrafluoroethylene (PTFE) strands, in which the strands of the weave are interconnected by a multiplicity of fine PTFE fibrils. To produce this fabric, consisting entirely of PTFE, a woven PTFE fabric is heated substantially u ...


5
Terukatsu Miyauchi: Liquid-liquid extraction process of metals. W L Gore & Associates, E A Uebler, J S Campbell, September 27, 1977: US04051230 (27 worldwide citation)

In this process metal ions such as Ag.sup.+, Pb.sup.2+, Co.sup.2+, Cu.sup. 2+, Fe.sup.3+, etc., are extracted through a porous membrane impregnated with the first extractant containing chelating agents. The membrane contacts with an extraction feed on one side, and with the second extractant on the ...


6
Terukatsu Miyauchi, Shintaro Furusaki: Continuous enzymatic reactor. W L Gore & Associates, E A Uebler, J S Campbell, September 27, 1977: US04051011 (7 worldwide citation)

The present invention provides an effective process for an enzymatic reaction which utilizes the enzyme membrane of the invention. The enzyme membrane consists of an enzyme strongly entrapped in a membrane base, said base being porous, fibrous, or roughened material which is permanently self-polariz ...