IFI

Patent Intelligence & Technology Report

10 Year Profile for 1990-1999

HITACHI CHEMICAL CO LTD JP

Class  1999  1998  1997  1996  1995  1994  1993  1992  1991  1990  Total

 029      1     0     3     2     1     1     0     2     0     0     10
 065      1     0     0     0     0     0     0     0     0     0      1
 106      1     0     0     1     2     0     2     0     2     0      8
 117      0     1     2     0     0     0     0     0     0     0      3
 156      0     2     0     0     0     0     1     1     1     0      5
 174      0     0     0     1     1     0     2     0     0     0      4
 192      0     0     0     0     0     0     0     0     1     0      1
 216      2     0     2     0     0     1     0     0     0     0      5
 241      1     0     0     0     0     0     0     0     0     0      1
 252      4     2     0     1     2     0     6     0     0     0     15
 257      1     2     0     1     0     0     1     1     1     1      8
 264      0     0     0     0     1     0     0     2     0     0      3
 313      0     0     0     0     0     0     0     0     0     1      1
 324      0     0     0     1     0     0     1     0     0     0      2
 337      2     0     0     0     0     0     0     0     0     0      2
 343      0     0     0     1     0     1     1     0     0     0      3
 351      0     0     0     0     0     0     0     0     1     0      1
 358      1     0     0     0     0     0     0     0     0     0      1
 361      1     0     0     1     0     0     0     0     0     0      2
 385      0     0     0     0     1     0     0     0     0     0      1
 419      2     0     0     0     0     0     0     0     0     0      2
 420      1     0     0     0     0     0     0     0     0     0      1
 423      1     0     0     0     0     0     0     0     0     0      1
 427      0     0     0     0     1     2     2     1     1     1      8
 428      8     2     5     3     4     0     3     1     4     1     31
 430      8     6     4     4     5     5     8     2    10     5     57
 435      1     0     4     2     0     1     0     0     0     0      8
 438      1     0     0     0     0     0     0     1     0     0      2
 442      0     0     0     0     0     0     1     0     1     0      2
 501      1     0     0     0     0     0     0     0     0     1      2
 502      0     0     0     0     0     0     1     0     0     0      1
 505      0     0     0     0     0     0     2     1     0     0      3
 514      1     1     0     0     0     0     2     2     1     1      8
 521      0     0     0     0     1     0     0     0     0     0      1
 522      0     0     0     0     1     0     0     1     2     1      5
 523      2     0     1     0     0     2     0     0     2     0      7
 524      0     1     0     0     1     1     1     1     0     1      6
 525      1     1     3     3     1     3     2     3     0     3     20
 526      0     1     1     3     1     0     0     2     0     0      8
 528      3     5     4     1     2     1     5     3     2     3     29
 536      1     0     1     1     0     0     0     0     0     0      3
 540      0     0     0     1     2     1     1     1     1     0      7
 546      0     0     0     1     0     0     0     0     1     0      2
 548      0     0     0     0     1     1     1     0     0     0      3
 549      0     0     0     0     0     0     0     1     1     1      3
 556      0     0     0     0     0     0     0     1     0     0      1
 558      0     0     0     0     1     0     1     0     0     0      2
 560      0     0     0     0     1     0     0     1     1     0      3
 564      0     0     0     0     2     1     0     0     0     0      3
 570      1     0     0     0     0     0     0     0     0     0      1
 700      0     0     0     0     0     0     0     0     1     0      1

Total    47    24    30    28    32    21    44    28    34    20    308