IFI

Patent Intelligence & Technology Report

Class Distribution for 1990-1999

570 - ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES (IPC C07C)

       1999  1998  1997  1996  1995  1994  1993  1992  1991  1990  Total

DAIKIN KOGYO CO LTD JP
          2    13     6     4     5     5     3     2     0     2     42
IMPERIAL CHEMICAL INDUSTRIES LTD GB
          5     6     3     3     4     2     7     3     0     3     36
ALBEMARLE CORP
          3     4     0     1     3     2     0     0     0     0     13
SHOWA DENKO K K JP
          1     2     1     1     2     2     0     0     0     0      9
PPG INDUSTRIES INC
          0     2     0     0     1     1     0     1     3     0      8
WACKER-CHEMIE GMBH DE
          0     0     0     0     0     0     2     2     1     0      5
RHONE-POULENC CHIMIE FR
          0     0     0     0     0     0     0     1     3     0      4
DEGUSSA DE
          0     0     0     0     0     0     0     1     0     0      1
ENGELHARD CORP
          0     0     0     0     0     0     1     0     0     0      1
HITACHI CHEMICAL CO LTD JP
          1     0     0     0     0     0     0     0     0     0      1

Total    12    27    10     9    15    12    13    10     7     5    120