E02F 3/88
With arrangements acting by a sucking or forcing effect
Official title: with arrangements acting by a sucking or forcing effect, e.g. suction dredgers (pumps in general F04)
E02F3/88 (With arrangements acting by a sucking or forcing effect) appears on 849 US grants and 614 published applications in this corpus.
Search patents in E02F- Granted patents
- 849
- Published applications
- 614
- Assignees
- 416
- Inventors
- 1,310
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 24 | 0 |
| 1978 | 28 | 0 |
| 1979 | 19 | 0 |
| 1980 | 15 | 0 |
| 1981 | 27 | 0 |
| 1982 | 36 | 0 |
| 1983 | 33 | 0 |
| 1984 | 16 | 0 |
| 1985 | 10 | 0 |
| 1986 | 14 | 0 |
| 1987 | 12 | 0 |
| 1988 | 14 | 0 |
| 1989 | 14 | 0 |
| 1990 | 14 | 0 |
| 1991 | 6 | 0 |
| 1992 | 11 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 15 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 1 |
| 2002 | 12 | 13 |
| 2003 | 12 | 16 |
| 2004 | 10 | 13 |
| 2005 | 12 | 13 |
| 2006 | 11 | 16 |
| 2007 | 5 | 8 |
| 2008 | 8 | 17 |
| 2009 | 13 | 23 |
| 2010 | 23 | 19 |
| 2011 | 8 | 22 |
| 2012 | 11 | 13 |
| 2013 | 9 | 23 |
| 2014 | 16 | 38 |
| 2015 | 23 | 26 |
| 2016 | 25 | 36 |
| 2017 | 33 | 36 |
| 2018 | 30 | 32 |
| 2019 | 32 | 33 |
| 2020 | 33 | 42 |
| 2021 | 27 | 35 |
| 2022 | 16 | 18 |
| 2023 | 27 | 32 |
| 2024 | 27 | 39 |
| 2025 | 28 | 29 |
| 2026 | 20 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Material collection system15 Sep 2026US 12,735,861 B2Old Dominion Brush Company
- System and method for controlling work machine1 Sep 2026US 12,723,366 B2Komatsu Ltd.
- Hydrovac with safe state25 Aug 2026US 12,716,204 B2Brandt Industries Canada Ltd.
- Deep-sea mining vehicle25 Aug 2026US 12,716,355 B2Deeptech NV
- Hydrovac with auto shutoff based on weight18 Aug 2026US 12,709,864 B2Brandt Industries Canada Ltd.
- Dump valve arrangement8 Oct 2026US 2026/0308872 A1Weir Minerals Netherlands B.V.
- Machine for removing sediment, dregs, and the like1 Oct 2026US 2026/0297891 A1Gerotto Federico S.R.L.
- Dredge with Drive Augers and Method of Dredging1 Oct 2026US 2026/0297892 A1
- Trench cutter17 Sep 2026US 2026/0275680 A1Royal IHC Limited
- Civil engineering machine and method for forming a hole10 Sep 2026US 2026/0266018 A1BAUER Offshore Technologies GmbH
Most cited
By later US patents
- Enhancing liquid jet erosion147US 4,474,251 AHydronautics, Incorporated · 1984
- Underwater sand pump146US 4,456,424 AToyo Denki Kogyosho Co., Ltd. · 1984
- In-line centrifugal pump115US 4,305,214 A1981
- Laying and protecting cable into existing covering surfaces112US 8,480,332 B2CertusView Technologies, LLC · 2013
- Enhancing liquid jet erosion91US 4,389,071 AHydronautics, Incorporated · 1983