US PATENT SUBCLASS 528 / 164
.~.~.~.~ Nitrogen-containing reactant contains the -N-C(=O)-N- group

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

Internet Version by PATENTEC © 1999      Terms of Use


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}
162  DF  .~.~.~ With nitrogen-containing reactant {2}
164.~.~.~.~ Nitrogen-containing reactant contains the -N-C(=O)-N- group

DEFINITION

Classification: 528/164

(under subclass 162) Subject matter wherein the nonphenolic or nonaldehyde or derivative nitrogen reactant contains the group.

SEE OR SEARCH THIS CLASS, SUBCLASS:

158, for a nonphenolic or nonaldehyde reactant containing the N-C-N group.