US PATENT SUBCLASS 528 / 275
.~.~.~.~ Material contains a metal atom


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}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
272  DF  .~.~ From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof {15}
274  DF  .~.~.~ Polymerizing in the presence of a specified material other than reactant {2}
275.~.~.~.~ Material contains a metal atom {6}
276  DF  .~.~.~.~.~> Metal atom in elemental form
277  DF  .~.~.~.~.~> Material contains a transition metal atom {3}
281  DF  .~.~.~.~.~> Material contains a Group IIB metal atom (Zn, Cd, Hg)
282  DF  .~.~.~.~.~> Material contains a Group IIIA metal atom (Al, Ga, In, Tl)
283  DF  .~.~.~.~.~> Material contains a Group IVA metal atom (Ge, Sn, Pb) {1}
285  DF  .~.~.~.~.~> Material contains a Group VA metal atom (As, Sb, Bi)


DEFINITION

Classification: 528/275

(under subclass 274) Subject matter wherein the specified material contains at least one metal atom.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for the definition of "metals".