US PATENT SUBCLASS 210 / 910
.~.~ Nonbiodegradable surfacant

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

902  DF  MATERIALS REMOVED {7}
908  DF  .~ Organic {2}
910.~.~ Nonbiodegradable surfacant

DEFINITION

Classification: 210/910

Nonbiodegradable surfactant:

Collection of disclosures under collection 908 in which the material resists decomposition and functions as a wetting agent, generally in cleaning processes.

(1) Note. Nonbiodegradable surfactants are also known as hard detergents.