IFI
Patent Intelligence & Technology Report
Class Distribution for 1990-1999
564 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES (IPC C07C)
1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 Total
RHONE-POULENC CHIMIE FR
2 3 1 0 1 1 3 3 3 2 19
ALBEMARLE CORP
8 2 2 0 2 2 0 0 0 0 16
DEGUSSA DE
0 2 3 2 0 1 0 1 1 1 11
IMPERIAL CHEMICAL INDUSTRIES LTD GB
0 0 1 0 1 1 2 1 0 2 8
CHISSO CORP JP
0 1 1 0 2 0 0 0 2 0 6
DSM N V NL
0 2 1 0 1 1 0 0 0 0 5
SHOWA DENKO K K JP
2 2 0 0 0 0 0 0 0 1 5
HITACHI CHEMICAL CO LTD JP
0 0 0 0 2 1 0 0 0 0 3
IOWA STATE UNIVERSITY RESEARCH FOUNDATION INC
0 0 2 0 0 0 0 0 1 0 3
SCHERING AG DE
0 0 2 0 0 0 0 0 1 0 3
AMERICAN HOME PRODUCTS CORP
0 0 0 0 0 0 0 2 0 0 2
BOEHRINGER MANNHEIM GMBH DE
0 0 0 0 0 0 0 0 0 2 2
GLAXO WELLCOME INC
0 1 1 0 0 0 0 0 0 0 2
IDEMITSU KOSAN CO LTD JP
0 0 0 0 1 1 0 0 0 0 2
PPG INDUSTRIES INC
0 0 0 0 0 0 0 1 0 1 2
ALCON LABORATORIES INC
0 0 1 0 0 0 0 0 0 0 1
BETZDEARBORN INC
0 0 1 0 0 0 0 0 0 0 1
DAIKIN KOGYO CO LTD JP
0 0 0 1 0 0 0 0 0 0 1
HARVARD COLLEGE, PRESIDENT & FELLOWS OF
1 0 0 0 0 0 0 0 0 0 1
PITTSBURGH, UNIVERSITY OF
0 0 0 0 0 0 1 0 0 0 1
Total 13 13 16 3 10 8 6 8 8 9 94