US PATENT SUBCLASS 210 / 918
MISCELLANEOUS SPECIFIC TECHNIQUES

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

918MISCELLANEOUS SPECIFIC TECHNIQUES {5}
919  DF  .~> Using combined systems by merging parallel diverse waste systems
920  DF  .~> Using combined systems of sequential local and regional or municipal sewage systems
921  DF  .~> Flow equalization or time controlled stages or cycles
922  DF  .~> Oil spill cleanup (e.g., bacterial, etc.) {3}
926  DF  .~> Using oxidation ditch (e.g., carousel, etc.)

DEFINITION

Classification: 210/918

MISCELLANEOUS SPECIFIC TECHNIQUES:

Collection of disclosures including a novel manipulative step, not classifiable under collection 600, to which significance is attached in the success of the intended treatment.

(1) Note. As examples, may be noted, process in which point of entry of liquid is deemed critical, particular sequence of operations, orientation of flow of materials (e.g., clockwise, etc.), particular time of year (e.g., spring) or relation to ground water table level, etc.