US PATENT SUBCLASS 528 / 49
.~.~.~ Material contains only one -C-XH,-C-C(=X)-XH or carbon to -NH or HNH group

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}
44  DF  .~ FROM REACTANT HAVING AT LEAST ONE -N=C=X GROUP (WHEREIN X IS A CHALCOGEN ATOM) AS WELL AS PRECURSORS THEREOF, E.G., BLOCKED ISOCYANATE, ETC. {17}
48  DF  .~.~ Process of polymerizing in the presence of a specified material other than reactant {5}
49.~.~.~ Material contains only one -C-XH,-C-C(=X)-XH or carbon to -NH or HNH group

DEFINITION

Classification: 528/49

(under subclass 48) Subject matter wherein the specified material contains a compound having a single C-XH, C-NH2, C-NH-, or group (X is chalcogen).