C07D 221/02

Condensed with carbocyclic rings or ring systems

Official title: condensed with carbocyclic rings or ring systems

C07D221/02 (Condensed with carbocyclic rings or ring systems) appears on 2,551 US grants and 2,116 published applications in this corpus.

Search patents in C07D
Granted patents
2,551
Published applications
2,116
Assignees
1,172
Inventors
7,039
Latest grant
6 Oct 2026

Filings by year

C07D 221/02: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976660
1977490
1978510
1979410
1980360
1981350
1982250
1983230
1984200
1985210
1986290
1987210
1988250
1989290
1990270
1991290
1992360
1993420
1994400
1995420
1996570
1997690
1998610
1999610
2000610
20016211
20026861
20035869
20043784
20053987
20064992
20073467
20084195
200948100
201067107
20116185
20127576
20137770
201476105
20158991
201676104
20177589
20185985
20197785
20207287
20217087
20225589
20234482
20245674
20255177
20263957

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

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