Filings by year

C04B 2235/3225: granted patents and published applications per publication year
YearGranted patentsPublished applications
197720
197810
197900
198000
198120
198200
198320
198410
198550
198650
198740
198850
198940
1990100
1991150
1992120
1993190
1994120
1995130
1996120
1997190
1998140
1999220
2000250
2001178
20022638
20034499
200465119
200564123
200671144
200782145
200873132
2009111161
2010111183
2011109145
2012122158
2013130159
2014120146
2015120136
2016126124
2017116155
2018121141
2019114163
2020134139
2021102170
2022115162
2023125175
2024116175
2025109123
20267284

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

Recent patents

Most cited

By later US patents