E02F 3/9212
Mechanical digging means
Official title: {Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel (E02F3/9287 takes precedence; active suction heads E02F3/9256)}
E02F3/9212 (Mechanical digging means) appears on 182 US grants and 98 published applications in this corpus.
Search patents in E02F- Granted patents
- 182
- Published applications
- 98
- Assignees
- 116
- Inventors
- 326
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 16 | 0 |
| 1983 | 11 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 5 |
| 2004 | 3 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 3 |
| 2010 | 4 | 0 |
| 2011 | 0 | 3 |
| 2012 | 1 | 4 |
| 2013 | 1 | 4 |
| 2014 | 2 | 5 |
| 2015 | 5 | 8 |
| 2016 | 3 | 7 |
| 2017 | 9 | 5 |
| 2018 | 6 | 5 |
| 2019 | 4 | 7 |
| 2020 | 8 | 9 |
| 2021 | 4 | 4 |
| 2022 | 5 | 1 |
| 2023 | 5 | 3 |
| 2024 | 3 | 10 |
| 2025 | 0 | 1 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dredge system2 Jun 2026US 12,644,252 B2Eddy Pump Corporation
- Bi-directional sled26 May 2026US 12,637,830 B2Eddy Pump Corporation
- Trench cutter and method for forming a cut trench in the ground21 Apr 2026US 12,606,983 B2BAUER Maschinen GmbH
- Walk behind grinding tool with horizontally aligned guides and grinding drum7 Apr 2026US 12,594,639 B2Corning Research & Development Corporation
- Fluid jet agricultural devices, systems and methods3 Feb 2026US 12,540,453 B2Susterre Technologies Inc.
- Machine for removing sediment, dregs, and the like1 Oct 2026US 2026/0297891 A1Gerotto Federico S.R.L.
- Civil engineering machine and method for forming a hole10 Sep 2026US 2026/0266018 A1BAUER Offshore Technologies GmbH
- Machine for removing sediment, dregs, and the like27 Aug 2026US 2026/0249332 A1Gerotto Federico S.R.L.
- Self-propelled vehicle for the removal of sediments, particularly in hazardous areas28 May 2026US 2026/0146406 A1Gerotto Federico S.R.L.
- Material transfer system for a body of water27 Feb 2025US 2025/0067020 A1Sea to Sky Energy Solutions Corp.
Most cited
By later US patents
- In-line centrifugal pump115US 4,305,214 A1981
- Apparatus for high-volume in situ soil remediation51US 6,543,963 B22003
- Apparatus for high-volume in situ soil remediation40US 6,779,948 B22004
- Mechanical excavating machines including rotary cutter and suction tube29US 3,930,324 ABritish Gas Corporation · 1976
- Cutter tooth system28US 4,205,469 AAktiebolaget Bofors · 1980