C07C 275/28

Derivatives of urea, i.e. compounds containing any of the groups [image cpc-sch-c07c-0967.gif]

Official title: having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton

C07C275/28 (Derivatives of urea, i.e. compounds containing any of the groups [image cpc-sch-c07c-0967.gif]) appears on 1,286 US grants and 1,000 published applications in this corpus.

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18 Aug 2026

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C07C 275/28: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976240
1977320
1978270
1979120
1980190
1981260
1982180
1983150
1984180
1985130
1986100
1987110
1988140
1989220
1990210
1991250
1992170
1993130
1994200
1995330
1996200
1997390
1998300
1999280
2000280
20013010
20024942
20033868
20044179
20052557
20062949
20073647
20083552
20093259
20103532
20113039
20123146
20132535
20144745
20153436
20163638
20172944
20182929
20192524
20202937
20212237
20221824
20231524
20241318
20251111
2026718

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