Filings by year

C11D 3/40: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976130
197770
197890
197980
198060
1981110
198270
198320
1984110
1985100
198630
198740
198880
1989120
1990150
1991160
1992200
1993100
199470
1995140
199670
199780
1998320
1999210
2000190
2001148
20022131
20032723
20042029
20051635
20062241
20071232
2008936
20091956
20102634
20112028
20122439
20132034
20143032
20153056
20162138
20172845
20182672
20193261
20204941
20213937
20222332
20232537
20242750
20252721
20261325

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

Recent patents

Most cited

By later US patents