US PATENT SUBCLASS 987 / 42
.~.~.~ Contains P(O) group as atoms in the ring and wherein the P atom is directly bonded to N (9/6571B)

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

Internet Version by PATENTEC © 1999      Terms of Use


987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
33  DF  .~ Compound contains a ring which is devoid of a metal atom and contains at least one P atom as ring member (9/6564; 9/6564V; 9/6568; 9/6568B; 9/6568C; 9/6568D; 9/6568E; 9/6568F) {3}
37  DF  .~.~ Ring contains O and P only, or may include in addition to the required O and P, only C (9/6571) {5}
42.~.~.~ Contains P(O) group as atoms in the ring and wherein the P atom is directly bonded to N (9/6571B)

DEFINITION

Classification: 987/42

Contains P(O) group as atoms in the ring and wherein the P atom is directly bonded to N (9/6571B):

(under subclass 37) Subject matter wherein the ring phosphorus atom is bonded directly to at least one oxygen atom in the ring and is also bonded to at least one nitrogen atom which may be in the ring or extracyclic to the ring.