E02F 3/06
With digging screws
Official title: with digging screws {(earth drilling E21; for digging trenches or ditches E02F5/04)}
E02F3/06 (With digging screws) appears on 73 US grants and 66 published applications in this corpus.
Search patents in E02F- Granted patents
- 73
- Published applications
- 66
- Assignees
- 46
- Inventors
- 138
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 4 |
| 2003 | 3 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 4 |
| 2007 | 1 | 2 |
| 2008 | 2 | 6 |
| 2009 | 3 | 4 |
| 2010 | 2 | 0 |
| 2011 | 0 | 2 |
| 2012 | 3 | 4 |
| 2013 | 3 | 2 |
| 2014 | 1 | 4 |
| 2015 | 3 | 4 |
| 2016 | 1 | 2 |
| 2017 | 3 | 2 |
| 2018 | 1 | 4 |
| 2019 | 1 | 1 |
| 2020 | 4 | 3 |
| 2021 | 4 | 5 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 6 |
| 2025 | 5 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Machine for performing excavations, in particular for drilling, and method associated to such machine25 Nov 2025US 12,480,278 B2Soilmec S.p.A.
- Working machine18 Nov 2025US 12,473,709 B2Kubota Corporation
- Skid steer trimmer assembly28 Oct 2025US 12,454,807 B1Burchland Mfg. Inc.
- Drilling tool and method for creating a bore in the ground14 Oct 2025US 12,442,150 B2BAUER Spezialtiefbau GmbH
- Construction equipment and methods21 Jan 2025US 12,203,239 B2
- Methods and apparatus for building expanded shaft augured foundation elements3 Apr 2025US 2025/0109564 A1Geopier Foundation Company, Inc.
- Drilling tool and method for producing a bore in the ground31 Oct 2024US 2024/0360726 A1BAUER Maschinen GmbH
- Working machine12 Sep 2024US 2024/0301651 A1Kubota Corporation
- Drilling tool and method for creating a bore in the ground15 Aug 2024US 2024/0271382 A1BAUER Spezialtiefbau GmbH
- Water digger4 Jul 2024US 2024/0218629 A1
Most cited
By later US patents
- Ground preparation tool for reforestation81US 4,359,101 A1982
- Heavy duty foundation installation apparatus and method38US 5,944,452 A1999
- Material handling apparatus and method for operating27US 6,997,667 B2Skid Mor Development LLC · 2006
- Work vehicle25US 6,409,457 B12002
- Horizontal auger for skidsteer tractors and the like22US 4,998,590 A1991