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C11D 3/3925

Nitriles

Official title: {Nitriles; Isocyanates or quarternary ammonium nitriles}

C11D3/3925 (Nitriles) appears on 63 US grants and 42 published applications in this corpus.

Search patents in C11D

Granted patents: 63
Published applications: 42
Assignees: 26
Inventors: 147
Latest grant: 20 Jan 2026

Filings by year

C11D 3/3925: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	0	0
1978	0	0
1979	0	0
1980	1	0
1981	0	0
1982	0	0
1983	0	0
1984	0	0
1985	0	0
1986	0	0
1987	0	0
1988	1	0
1989	0	0
1990	2	0
1991	0	0
1992	0	0
1993	1	0
1994	1	0
1995	0	0
1996	0	0
1997	1	0
1998	6	0
1999	6	0
2000	6	0
2001	9	1
2002	3	2
2003	1	4
2004	1	8
2005	0	4
2006	5	7
2007	1	1
2008	2	2
2009	2	3
2010	0	0
2011	3	2
2012	2	0
2013	0	0
2014	0	0
2015	0	1
2016	0	2
2017	1	0
2018	2	0
2019	0	1
2020	0	0
2021	0	0
2022	1	2
2023	0	1
2024	1	0
2025	1	1
2026	1	0

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

Recent patents

Polyurethane redeposition inhibiting polymers and detergent compositions containing same20 Jan 2026US 12,529,014 B2Lubrizol Advanced Materials, Inc.
Nonionic surfactant-based liquid detergent compositions containing a manganese bleach catalyst17 Jun 2025US 12,331,268 B2Ecolab USA Inc.
Fabric care composition comprising hydrophobically modified polyalkyleneimine as dye fixative polymer2 Jul 2024US 12,024,691 B2BASF SE
Acidic liquid detergent compositions containing bleach catalyst and free of anionic surfactant18 Jan 2022US 11,225,631 B2Ecolab USA Inc.
Bleach catalyst granules, use thereof and washing cleaning agents containing the same27 Feb 2018US 9,902,921 B2Weylchem Wiesbaden GmbH

Most cited

By later US patents