US PATENT SUBCLASS 507 / 124
.~.~.~.~ Polymer contains vinyl alcohol unit

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

100  DF  EARTH BORING {4}
103  DF  .~ Contains organic component {14}
117  DF  .~.~ Organic component is solid synthetic resin {1}
118  DF  .~.~.~ Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) {5}
124.~.~.~.~ Polymer contains vinyl alcohol unit

DEFINITION

Classification: 507/124

Polymer contains vinyl alcohol unit:

(under subclass 118) Composition wherein said polymer comprises at least one vinyl alcohol unit.

(1) Note. In the absence of information to the contrary, a hydrolysis product of polyvinyl acetate is polyvinyl alcohol and is provided for herein.