US PATENT SUBCLASS 564 / 421
.~.~.~.~.~.~ Group VI metal containing catalyst utilized

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

Internet Version by PATENTEC © 1999      Terms of Use


564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
305  DF  .~.~ Benzene ring containing {24}
415  DF  .~.~.~ Forming amine group directly by reduction {1}
416  DF  .~.~.~.~ Of nitro or nitroso {4}
420  DF  .~.~.~.~.~ By direct hydrogenation {2}
421.~.~.~.~.~.~ Group VI metal containing catalyst utilized

DEFINITION

Classification: 564/421

(under subclass 420) Processes wherein a Group VI metal containing catalyst is utilized in the hydrogenation.