US PATENT SUBCLASS 210 / 500.22
.~.~.~ Isotropically pored

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
500.1  DF  .~ Material {6}
500.21  DF  .~.~ Semipermeable membrane {6}
500.22.~.~.~ Isotropically pored

DEFINITION

Classification: 210/500.22

Isotropically pored:

(under subclass 500.21) Subject matter comprising a membrane structure, defining two major surfaces, and which includes pores which extend between the major surfaces, the pores having a substantially uniform cross section throughout.