C23C 22/00

Chemical surface treatment of metallic material by reaction of the surface with

Official title: Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

C23C22/00 (Chemical surface treatment of metallic material by reaction of the surface with) appears on 3,196 US grants and 2,814 published applications in this corpus.

Search patents in C23C

Granted patents: 3,196
Published applications: 2,814
Assignees: 1,283
Inventors: 7,024
Latest grant: 6 Oct 2026

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C23C 22/00: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	61	0
1977	38	0
1978	51	0
1979	30	0
1980	37	0
1981	38	0
1982	40	0
1983	37	0
1984	37	0
1985	42	0
1986	41	0
1987	61	0
1988	37	0
1989	52	0
1990	58	0
1991	54	0
1992	55	0
1993	48	0
1994	68	0
1995	80	0
1996	70	0
1997	59	0
1998	61	0
1999	69	0
2000	69	0
2001	74	20
2002	76	56
2003	78	112
2004	71	107
2005	34	92
2006	40	90
2007	28	77
2008	26	88
2009	32	105
2010	64	112
2011	49	123
2012	71	109
2013	69	98
2014	75	109
2015	82	128
2016	91	133
2017	76	124
2018	88	150
2019	116	124
2020	99	149
2021	83	117
2022	100	162
2023	70	134
2024	116	114
2025	134	105
2026	61	76

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

Chemical surface treatment of metallic material by reaction of the surface with

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