Filings by year

C04B 35/62821: granted patents and published applications per publication year
YearGranted patentsPublished applications
198910
199000
199120
199230
199330
199410
199520
199600
199720
199800
199900
200000
200100
200201
200345
2004210
200534
200623
200738
200827
200966
2010817
201109
201257
201386
201454
201523
201665
201754
2018412
2019116
202055
202145
202215
202367
202443
202532
202610

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

Recent patents

Most cited

By later US patents