05664628 is referenced by 87 patents and cites 106 patents.

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 medium, and a protective covering, such as a perforated cage, surrounding the filter medium. The filter is particularly suitable for removal of sand and other particulates from fluids produced in a well.

Title
Filter for subterranean wells
Application Number
65908
Publication Number
5664628
Application Date
December 7, 1994
Publication Date
September 9, 1997
Inventor
Christophe A Malbrel
New York
NY, US
Reza Hashemi
Sea Cliff
NY, US
Michael B Whitlock
Cortland
NY, US
Stephen A Geibel
Cortland
NY, US
Paul C Koehler
Cortland
NY, US
Agent
Leydig Voit & Mayer
Assignee
PALL Corporation
NY, US
IPC
E21B 43/08
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