IFI
Patent Intelligence & Technology Report
Class Distribution for 1990-1999
062 - REFRIGERATION (IPC F25B, F25D, F25J)
1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 Total
BOC GROUP INC THE
10 13 6 11 16 7 5 4 3 9 84
GAS RESEARCH INSTITUTE
5 7 5 5 7 7 5 3 9 6 59
SANDEN CORP JP
1 4 3 2 1 6 8 5 13 12 55
DAIKIN KOGYO CO LTD JP
4 5 8 6 4 1 1 2 1 1 33
MAYTAG CORP
4 3 0 0 1 2 0 0 0 0 10
MARYLAND, UNIVERSITY OF
0 0 0 0 1 0 3 1 0 0 5
IOWA STATE UNIVERSITY RESEARCH FOUNDATION INC
1 1 0 1 1 0 0 0 0 0 4
PORSCHE, DR ING H C F AG DE
0 0 0 0 0 0 0 0 2 1 3
SMS SCHLOEMANN-SIEMAG AG DE
1 1 0 0 1 0 0 0 0 0 3
DEUTSCHE FORSCHUNGSANSTALT FUR LUFT- UND RAUMFAHRT E V DE
0 0 0 0 1 0 0 0 0 1 2
IMPERIAL CHEMICAL INDUSTRIES LTD GB
0 0 0 0 0 0 1 0 1 0 2
SHOWA DENKO K K JP
1 0 0 0 0 0 0 0 0 1 2
SMC CORP JP
1 0 0 0 0 0 0 0 1 0 2
AMGEN INC
0 0 0 0 0 0 1 0 0 0 1
ATLANTIC RICHFIELD CO
0 0 0 0 1 0 0 0 0 0 1
DUKE UNIVERSITY
0 0 0 0 1 0 0 0 0 0 1
ENGELHARD CORP
1 0 0 0 0 0 0 0 0 0 1
IDEMITSU KOSAN CO LTD JP
0 0 0 0 0 1 0 0 0 0 1
MANNESMANN SACHS AG DE
0 1 0 0 0 0 0 0 0 0 1
PPG INDUSTRIES INC
0 0 0 1 0 0 0 0 0 0 1
SIEMENS WESTINGHOUSE POWER CORP
1 0 0 0 0 0 0 0 0 0 1
TOSHIBA KIKAI K K JP
0 0 1 0 0 0 0 0 0 0 1
Total 30 35 23 26 35 24 24 15 30 31 273