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G01N 33/2894

For metal working or machining

Official title: {for metal working or machining}

G01N33/2894 (For metal working or machining) appears on 23 US grants and 19 published applications in this corpus.

Search patents in G01N

Granted patents: 23
Published applications: 19
Assignees: 20
Inventors: 47
Latest grant: 8 Sep 2026

Filings by year

G01N 33/2894: granted patents and published applications per publication year
Year	Granted patents	Published applications
1980	1	0
1981	0	0
1982	1	0
1983	0	0
1984	0	0
1985	0	0
1986	0	0
1987	0	0
1988	1	0
1989	0	0
1990	0	0
1991	0	0
1992	0	0
1993	1	0
1994	0	0
1995	1	0
1996	0	0
1997	0	0
1998	0	0
1999	1	0
2000	0	0
2001	0	0
2002	1	0
2003	0	0
2004	1	1
2005	1	0
2006	0	0
2007	0	1
2008	0	2
2009	0	0
2010	0	0
2011	0	0
2012	0	0
2013	0	0
2014	0	1
2015	0	1
2016	0	0
2017	2	1
2018	1	2
2019	2	3
2020	2	2
2021	1	0
2022	0	0
2023	2	4
2024	0	0
2025	1	1
2026	3	0

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

Recent patents

Measurement and control of entrained air and foam in metalworking fluids8 Sep 2026US 12,730,100 B2Quaker Chemical Corporation
Measurement and control of entrained air and foam in metalworking fluids1 Sep 2026US 12,724,021 B2Quaker Chemical Corporation
Colored reagent complex and method of detecting a rust removing agent in metal working fluids using the same20 Jan 2026US 12,529,648 B2Northern Technologies International Corporation
Coolant state estimation system, coolant state estimation method, storage medium, learned model, and machine learning device7 Oct 2025US 12,436,143 B2Toyota Jidosha Kabushiki Kaisha
Grease measurement device and method19 Dec 2023US 11,846,625 B1York Laboratories, LLC

Most cited

By later US patents