US PATENT SUBCLASS 527 / 204
.~.~ With N=C=X reactant wherein X is chalcogen

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

Internet Version by PATENTEC © 1999      Terms of Use


527 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {6}
200  DF  .~ FROM PROTEIN OR BIOLOGICALLY ACTIVE POLYPEPTIDE REACTANT {4}
204.~.~ With N=C=X reactant wherein X is chalcogen

DEFINITION

Classification: 527/204

With N=C=X reactant wherein X is chalcogen:

(under subclass 200) Subject matter wherein a N=C=C reactant is additionally present.

(1) Note. X is a chalcogen atom (O, S, Se, or Te).