US PATENT SUBCLASS 528 / 147
.~.~.~.~ Material contains a Group IA metal atom (Li, Na, K, Rb, Cs, Fr)


Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
86  DF  .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15}
129  DF  .~.~ With aldehyde or derivative {18}
137  DF  .~.~.~ Polymerizing in the presence of a specified material other than a reactant {9}
147.~.~.~.~ Material contains a Group IA metal atom (Li, Na, K, Rb, Cs, Fr)


DEFINITION

Classification: 528/147

(under subclass 137) Subject matter wherein the specified material contains at least one atom of a Group IA metal (i.e., Li, Na, K, Rb, Cs, Fr).

(1) Note. The term "caustic or alkali" in a claim is sufficient for a material to be considered as a specified material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

139, for a specified material containing radium.