US PATENT SUBCLASS 558 / 321
.~.~.~.~.~.~ Niobium, tantalum, silver, sulfur, ruthenium, rhodium, palladium, osmium, iridium, or platinum containing material utilized

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

Internet Version by PATENTEC © 1999      Terms of Use


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
303  DF  .~ Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {21}
308  DF  .~.~ Processes for forming the cyano group {7}
318  DF  .~.~.~ Ammonia utilized {3}
319  DF  .~.~.~.~ And molecular oxygen or a molecular oxygen containing gas {2}
320  DF  .~.~.~.~.~ Acting on a compound containing acyclic or alicyclic carbon to carbon unsaturation {4}
321.~.~.~.~.~.~ Niobium, tantalum, silver, sulfur, ruthenium, rhodium, palladium, osmium, iridium, or platinum containing material utilized

DEFINITION

Classification: 558/321

Processes under 320 wherein there is utilized a material that contains niobium, tantalum, silver, sulfur, ruthenium, rhodium, palladium, osmium, iridium or platinum.

(1) Note. The elements listed above are generally present as components of catalysts.