US PATENT SUBCLASS 507 / 101
.~ Contains enzyme or living microorganism

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

100  DF  EARTH BORING {4}
101.~ Contains enzyme or living microorganism

DEFINITION

Classification: 507/101

Contains enzyme or living microorganism:

(under subclass 100) Composition comprising an enzyme or a

microorganism which is living when injected into the wellbore.

(1) Note. Cross-referencing within Class 507 according to all remaining organic components of the composition is strongly recommended.

SEE OR SEARCH CLASS

166, Wells,

246, for processes involving the use of a microorganism.

435, Chemistry: Molecular Biology and Microbiology,

183+, for enzyme containing compositions and subclasses 243+ for microorganism containing compositions nonspecific to earth boring.