patentgrepDocs Get an API key

B01D 46/444

By flow measuring

Official title: {by flow measuring}

B01D46/444 (By flow measuring) appears on 171 US grants and 200 published applications in this corpus.

Search patents in B01D

Granted patents: 171
Published applications: 200
Assignees: 142
Inventors: 431
Latest grant: 11 Aug 2026

Filings by year

B01D 46/444: granted patents and published applications per publication year
Year	Granted patents	Published applications
1978	1	0
1979	0	0
1980	1	0
1981	0	0
1982	0	0
1983	1	0
1984	1	0
1985	1	0
1986	2	0
1987	0	0
1988	0	0
1989	0	0
1990	0	0
1991	0	0
1992	0	0
1993	1	0
1994	0	0
1995	2	0
1996	2	0
1997	0	0
1998	3	0
1999	1	0
2000	3	0
2001	2	0
2002	0	0
2003	2	4
2004	2	6
2005	5	2
2006	1	4
2007	2	4
2008	2	6
2009	4	4
2010	3	4
2011	1	4
2012	5	4
2013	2	6
2014	3	6
2015	6	5
2016	8	9
2017	3	13
2018	10	10
2019	8	13
2020	13	13
2021	15	25
2022	12	14
2023	10	11
2024	18	15
2025	8	9
2026	7	9

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

Recent patents

Assemblies and methods for material extraction from retention collections11 Aug 2026US 12,703,585 B2Industrial Vacuum Transfer Services USA, LLC
Systems, methods, and devices for industrial tower waste extraction4 Aug 2026US 12,698,199 B2Industrial Vacuum Transfer Services USA, LLC
Assemblies and methods for material extraction from retention collections28 Jul 2026US 12,692,102 B2Industrial Vacuum Transfer Services USA, LLC
Taking up system and process with a filter unit for the receiving of gas from a medical apparatus21 Jul 2026US 12,685,836 B2Drägerwerk AG & Co. KGaA
Method and system for detecting and quantifying regeneration events in a diesel particulate filter5 May 2026US 12,618,354 B2Intangles Lab Pvt. Ltd.

Most cited

By later US patents