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Paul C Koehler, Stephen A Geibel, Michael B Whitlock, Reza Hashemi, Christophe A Malbrel: Filter for subterranean wells. PALL Corporation, Leydig Voit & Mayer, September 9, 1997: US05664628 (87 worldwide citation)

A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter ...


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Paul C Koehler, Stephen A Geibel, Michael B Whitlock, Reza Hashemi, Christophe A Malbrel: Method of repairing a damaged well. Pall Corporation, Leydig Voit & Mayer, June 8, 1999: US05909773 (36 worldwide citation)

A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter ...


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Paul C Koehler, Michael B Whitlock, Lawrence J Noble, George C Jenkins: Filter assembly and method of making a filter assembly. Pall Corporation, Leydig Voit & Mayer, August 13, 1996: US05545323 (13 worldwide citation)

A filter assembly and a method of making a filter assembly is described wherein a filter pack is seated in an end cap and contacted with a particulate material and a settling liquid of low viscosity to form a filter assemblage. The filter assemblage is sintered to form a strong, virtually impermeabl ...


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Paul C Koehler, Stephen A Geibel, Michael B Whitlock: Liquid laydown process and metal filter. Pall Corporation, Leydig Voit & Mayer, September 22, 1992: US05149360 (12 worldwide citation)

Metal filter sheet is made by a method in which metal particulates are suspended in a fluid medium containing a stabilizing agent. The stable suspension is then filtered to leave a wet cake of the metal particulate which is then dried, compressed, and sintered to produce the metal filter sheet.


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Paul C Koehler, Michael B Whitlock, Vijay Y Rajadhyaksha, Ezekiel E Westfall: Method of making a filter assembly. Pall Corporation, Leydig Voit & Mayer, March 7, 1995: US05395039 (8 worldwide citation)

A method of making a filter assembly is described wherein a filter pack is seated in an end cap and contacted with a mixture comprising a binder and a particulate material including a low temperature component and a high temperature component. The filter pack, the end cap, and the particulate materi ...


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Paul C Koehler, Stephen Geibel, Ralph B Di Palma: Apparatus for use in a battery. Pall Corporation, Leydig Voit & Mayer, June 4, 1996: US05523183 (5 worldwide citation)

A battery electrode is provided comprising a porous, pleated metal structure, preferably comprising nickel as its substrate.