US PATENT SUBCLASS 532 / *-- NOTE: An alternative search for U.S. patents based upon a modification of the European Patent Office Classification, for portions of the subject matter of this or its daughter classes, may be found in Class 987, 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.

US PATENT SUBCLASS 532 / *
NOTE: An alternative search for U.S. patents based upon a modification of the European Patent Office Classification, for portions of the subject matter of this or its daughter classes, may be found in Class 987, 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.

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

*		NOTE: An alternative search for U.S. patents based upon a modification of the European Patent Office Classification, for portions of the subject matter of this or its daughter classes, may be found in Class 987, 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.