C02F 1/283

Using coal, charred products, or inorganic mixtures containing them

Official title: {using coal, charred products, or inorganic mixtures containing them}

C02F1/283 (Using coal, charred products, or inorganic mixtures containing them) appears on 3,062 US grants and 3,883 published applications in this corpus.

Search patents in C02F

Granted patents: 3,062
Published applications: 3,883
Assignees: 2,024
Inventors: 7,741
Latest grant: 29 Sep 2026

Filings by year

C02F 1/283: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	13	0
1977	15	0
1978	25	0
1979	16	0
1980	19	0
1981	23	0
1982	4	0
1983	11	0
1984	11	0
1985	12	0
1986	12	0
1987	25	0
1988	27	0
1989	27	0
1990	20	0
1991	41	0
1992	34	0
1993	26	0
1994	32	0
1995	36	0
1996	32	0
1997	33	0
1998	31	0
1999	45	0
2000	60	0
2001	61	11
2002	71	86
2003	58	125
2004	65	95
2005	68	132
2006	52	137
2007	71	87
2008	57	105
2009	50	113
2010	72	120
2011	57	138
2012	77	119
2013	71	109
2014	59	138
2015	72	147
2016	73	176
2017	92	191
2018	127	214
2019	142	247
2020	178	207
2021	167	228
2022	145	198
2023	143	206
2024	166	209
2025	159	197
2026	79	148

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

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