IFI

Patent Intelligence & Technology Report

Class Distribution for 1990-1999

369 - DYNAMIC INFORMATION STORAGE OR RETRIEVAL (IPC G11B)

       1999  1998  1997  1996  1995  1994  1993  1992  1991  1990  Total

DEUTSCHE THOMSON-BRANDT GMBH DE
         10     7     1     5    10     8     6    10    10     3     70
HITACHI MAXELL LTD JP
         13     1     3     4     2     2     4     4     8     2     43
MITSUMI ELECTRIC CO LTD JP
          8     2     1     1     0     0     2     0     0     0     14
READ-RITE CORP
          7     2     0     0     0     0     0     0     0     0      9
QUANTUM CORP
          1     1     0     2     1     0     0     0     0     0      5
THOMSON MULTIMEDIA S A FR
          1     3     0     1     0     0     0     0     0     0      5
IOMEGA CORP
          0     1     1     0     0     1     0     0     0     0      3
SEGA ENTERPRISES LTD JP
          1     1     1     0     0     0     0     0     0     0      3
FANUC LTD JP
          0     0     0     0     0     0     0     1     0     0      1
IMPERIAL CHEMICAL INDUSTRIES LTD GB
          0     0     0     0     1     0     0     0     0     0      1
PENN STATE RESEARCH FOUNDATION THE
          0     0     0     0     1     0     0     0     0     0      1
PLANCK-GESELL, MAX- ZUR FORDERUNG DER WISSENSCHAFTEN DE
          0     0     0     0     0     0     1     0     0     0      1
SENSORMATIC ELECTRONICS CORP
          1     0     0     0     0     0     0     0     0     0      1
YEDA RESEARCH & DEVELOPMENT CO LTD IL
          0     0     0     1     0     0     0     0     0     0      1

Total    42    18     7    14    15    11    13    15    18     5    158