B01D 35/02

Filters adapted for location in special places

Official title: Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70})

B01D35/02 (Filters adapted for location in special places) appears on 1,753 US grants and 1,684 published applications in this corpus.

Search patents in B01D

Granted patents: 1,753
Published applications: 1,684
Assignees: 1,002
Inventors: 3,666
Latest grant: 29 Sep 2026

Filings by year

B01D 35/02: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	12	0
1977	26	0
1978	10	0
1979	10	0
1980	8	0
1981	20	0
1982	10	0
1983	11	0
1984	10	0
1985	15	0
1986	13	0
1987	20	0
1988	18	0
1989	21	0
1990	17	0
1991	14	0
1992	27	0
1993	17	0
1994	23	0
1995	23	0
1996	38	0
1997	28	0
1998	42	0
1999	30	0
2000	30	0
2001	49	17
2002	55	28
2003	31	50
2004	40	51
2005	33	50
2006	22	48
2007	33	30
2008	17	21
2009	12	32
2010	21	31
2011	21	33
2012	19	40
2013	22	58
2014	36	71
2015	51	93
2016	63	91
2017	55	97
2018	76	106
2019	99	105
2020	72	139
2021	69	79
2022	101	90
2023	79	92
2024	79	83
2025	79	95
2026	26	54

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

Filters adapted for location in special places

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