Filings by year

C04B 35/83: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976140
197770
197860
197960
198090
198160
198250
198380
1984120
198590
198680
1987110
1988130
1989100
1990130
1991160
1992230
1993180
1994180
1995240
1996280
1997290
1998180
1999280
2000180
2001196
20022013
20031030
20042442
20051745
20062236
20072331
20082028
2009934
20102234
20112729
20121520
20132130
20142222
20151827
20161541
20172849
20183542
20194839
20203638
20212841
20222428
20233843
20242646
20253542
20263523

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

Recent patents

Most cited

By later US patents