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C09B 62/507

Azo dyes

Official title: Azo dyes {(C09B62/5033, C09B62/5036 take precedence)}

C09B62/507 (Azo dyes) appears on 217 US grants and 53 published applications in this corpus.

Search patents in C09B

Granted patents: 217
Published applications: 53
Assignees: 52
Inventors: 259
Latest grant: 21 Oct 2025

Filings by year

C09B 62/507: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	3	0
1977	8	0
1978	3	0
1979	3	0
1980	3	0
1981	4	0
1982	2	0
1983	2	0
1984	2	0
1985	4	0
1986	2	0
1987	7	0
1988	7	0
1989	11	0
1990	13	0
1991	10	0
1992	9	0
1993	3	0
1994	8	0
1995	12	0
1996	11	0
1997	8	0
1998	12	0
1999	6	0
2000	5	0
2001	10	0
2002	2	2
2003	4	3
2004	6	11
2005	6	4
2006	7	5
2007	2	5
2008	3	4
2009	4	4
2010	2	0
2011	0	1
2012	0	2
2013	3	0
2014	1	2
2015	1	1
2016	0	0
2017	0	1
2018	0	1
2019	2	0
2020	0	2
2021	1	2
2022	1	1
2023	0	2
2024	2	0
2025	2	0

By publication year. Applications have been published since 2001.

Subgroups

Granted patents

Recent patents

Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials21 Oct 2025US 12,448,519 B2Archroma (Switzerland) GmbH
Process for the simultaneous tanning and dyeing of collagen containing fibrous material3 Jun 2025US 12,319,973 B2Archroma (Switzerland) GmbH
Method of manufacturing reactive composition and ink for high stability12 Nov 2024US 12,139,616 B2
Fibre reactive dyes, their preparation and their use11 Jun 2024US 12,006,437 B2Huntsman Textile Effects (Switzerland) GmbH
Reactive dye compound and preparation method and application thereof28 Jun 2022US 11,370,921 B2Shanghai Kehua Dyestuff Industry Co., Ltd.

Most cited

By later US patents