C09K 19/3003

Compounds containing at least two rings in which the different rings are

Official title: {Compounds containing at least two rings in which the different rings are directly linked (covalent bond)}

C09K19/3003 (Compounds containing at least two rings in which the different rings are) appears on 1,410 US grants and 1,464 published applications in this corpus.

Search patents in C09K

Granted patents: 1,410
Published applications: 1,464
Assignees: 188
Inventors: 1,492
Latest grant: 29 Sep 2026

Filings by year

C09K 19/3003: granted patents and published applications per publication year
Year	Granted patents	Published applications
1978	1	0
1979	1	0
1980	3	0
1981	3	0
1982	3	0
1983	7	0
1984	8	0
1985	9	0
1986	8	0
1987	10	0
1988	3	0
1989	9	0
1990	6	0
1991	12	0
1992	10	0
1993	21	0
1994	21	0
1995	22	0
1996	13	0
1997	12	0
1998	24	0
1999	25	0
2000	24	0
2001	23	5
2002	14	21
2003	21	23
2004	24	26
2005	20	19
2006	18	17
2007	15	23
2008	19	42
2009	25	40
2010	49	52
2011	36	62
2012	38	38
2013	55	62
2014	37	64
2015	68	132
2016	91	153
2017	85	124
2018	82	125
2019	98	121
2020	71	75
2021	74	59
2022	58	43
2023	39	47
2024	36	25
2025	28	40
2026	31	26

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

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