IFI

Patent Intelligence & Technology Report

Class Distribution for 1990-1999 

071 - CHEMISTRY: FERTILIZERS (IPC C05F, C05C)

       1999  1998  1997  1996  1995  1994  1993  1992  1991  1990  Total

CHISSO CORP JP
          0     0     0     0     0     0     1     1     1     0      3
IMPERIAL CHEMICAL INDUSTRIES LTD GB
          0     0     0     0     0     0     0     0     1     0      1
MARYLAND, UNIVERSITY OF
          1     0     0     0     0     0     0     0     0     0      1
PENN STATE RESEARCH FOUNDATION THE
          0     0     1     0     0     0     0     0     0     0      1

Total     1     0     1     0     0     0     1     1     2     0      6