US PATENT SUBCLASS 507 / 938
.~.~.~ With microemulsion

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

935  DF  ENHANCED OIL RECOVERY {1}
936  DF  .~ Flooding the formation {1}
937  DF  .~.~ With emulsion {1}
938.~.~.~ With microemulsion

DEFINITION

Classification: 507/938

With microemulsion:

Subject matter under art collection 937 wherein the emulsion is a microemulsion.

(1) Note. A microemulsion has particles from 0.01 to 0.20 micrometers (10 to 200nm) in size. Furthermore, a disclosure of micellar dispersion or transparent emulsion is synonymous with microemulsion for the purposes of this subclass.