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E02F 9/2239

Using two or more pumps with cross-assistance

Official title: {using two or more pumps with cross-assistance}

E02F9/2239 (Using two or more pumps with cross-assistance) appears on 472 US grants and 433 published applications in this corpus.

Search patents in E02F

Granted patents: 472
Published applications: 433
Assignees: 126
Inventors: 775
Latest grant: 8 Sep 2026

Filings by year

E02F 9/2239: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	8	0
1977	7	0
1978	5	0
1979	1	0
1980	1	0
1981	1	0
1982	3	0
1983	2	0
1984	2	0
1985	9	0
1986	2	0
1987	2	0
1988	2	0
1989	6	0
1990	3	0
1991	3	0
1992	7	0
1993	2	0
1994	3	0
1995	3	0
1996	3	0
1997	2	0
1998	7	0
1999	5	0
2000	6	0
2001	6	2
2002	6	2
2003	9	9
2004	3	4
2005	8	9
2006	5	13
2007	3	12
2008	7	13
2009	20	18
2010	7	13
2011	8	9
2012	8	17
2013	10	29
2014	12	24
2015	24	36
2016	20	19
2017	24	21
2018	23	25
2019	24	19
2020	28	19
2021	22	26
2022	18	32
2023	21	15
2024	26	20
2025	20	13
2026	15	14

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

Subgroups

Granted patents

E02F 9/2242Including an electronic controller276

Recent patents

Most cited

By later US patents