E02F 3/94
Apparatus for separating stones from the dredged material , i.e. separating or
Official title: Apparatus for separating stones from the dredged material {, i.e. separating or treating dredged material (screening plants mounted on dredger therefor E02F7/06)}
E02F3/94 (Apparatus for separating stones from the dredged material , i.e. separating or) appears on 53 US grants and 42 published applications in this corpus.
Search patents in E02F- Granted patents
- 53
- Published applications
- 42
- Assignees
- 41
- Inventors
- 120
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 4 |
| 2018 | 3 | 3 |
| 2019 | 2 | 7 |
| 2020 | 3 | 9 |
| 2021 | 6 | 3 |
| 2022 | 3 | 3 |
| 2023 | 2 | 2 |
| 2024 | 5 | 3 |
| 2025 | 3 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bi-directional sled26 May 2026US 12,637,830 B2Eddy Pump Corporation
- Methods for suppression of seabed mining plumes21 Apr 2026US 12,606,982 B2Deep Reach Technology, Inc.
- Hydro excavation vacuum apparatus and fluid storage and supply systems thereof12 Aug 2025US 12,385,215 B2Vermeer Manufacturing Company
- Environmentally-friendly semi-closed loop deep-sea ore hydraulic lifting system5 Aug 2025US 12,378,749 B2China Merchants Deepsea Research Institute (Sanya) Co.
- Vacuum excavation apparatus having a deceleration vessel and methods for excavating a site15 Apr 2025US 12,276,080 B2Vermeer Manufacturing Company
- Dump valve arrangement8 Oct 2026US 2026/0308872 A1Weir Minerals Netherlands B.V.
- Civil engineering machine and method for forming a hole10 Sep 2026US 2026/0266018 A1BAUER Offshore Technologies GmbH
- Suction Excavator30 Jul 2026US 2026/0218484 A1Mobile Tiefbausaugsysteme GmbH
- Bi-directional sled15 Aug 2024US 2024/0271385 A1Eddy Pump Corporation
- Robot for pond desilting16 May 2024US 2024/0159015 A1Guangdong Ocean University
Most cited
By later US patents
- Apparatus for pneumatic excavation51US 5,487,229 AElectric Power Research Institute, Inc. · 1996
- Nodule collector16US 4,368,923 ADirector-General of Agency of Industrial Science and Technology · 1983
- Dredge units14US 3,950,246 A1976
- Method and apparatus for recovering mineral nodules from the ocean floor14US 4,391,468 AKamyr, Inc. · 1983
- Suction dredge cutter head13US 4,365,427 A1982