C07D 307/56

With hetero atoms or with carbon atoms having three bonds to hetero

Official title: with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms

C07D307/56 (With hetero atoms or with carbon atoms having three bonds to hetero) appears on 2,896 US grants and 2,295 published applications in this corpus.

Search patents in C07D

Granted patents: 2,896
Published applications: 2,295
Assignees: 1,263
Inventors: 7,619
Latest grant: 22 Sep 2026

Filings by year

C07D 307/56: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	53	0
1977	53	0
1978	63	0
1979	37	0
1980	54	0
1981	55	0
1982	44	0
1983	47	0
1984	46	0
1985	41	0
1986	36	0
1987	23	0
1988	26	0
1989	30	0
1990	49	0
1991	46	0
1992	55	0
1993	48	0
1994	36	0
1995	55	0
1996	40	0
1997	52	0
1998	51	0
1999	56	0
2000	53	0
2001	75	11
2002	64	59
2003	65	90
2004	48	119
2005	42	130
2006	65	96
2007	64	110
2008	69	96
2009	61	94
2010	73	127
2011	63	86
2012	78	105
2013	88	104
2014	117	99
2015	99	109
2016	90	98
2017	87	83
2018	70	85
2019	72	87
2020	76	111
2021	66	71
2022	53	76
2023	57	77
2024	38	75
2025	43	49
2026	24	48

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

With hetero atoms or with carbon atoms having three bonds to hetero

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