E21B 11/04
Boring grabs
E21B11/04 (Boring grabs) appears on 7 US grants and 4 published applications in this corpus.
Search patents in E21B- Granted patents
- 7
- Published applications
- 4
- Assignees
- 6
- Inventors
- 17
- Latest grant
- 8 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Downhole debris-collecting tool having an improved valve8 Dec 2020US 10,858,900 B2Altus Intervention (Technologies) AS
- Post hole digger14 Aug 2001US 6,273,482 B1
- Post hole digger18 Jul 2000US 6,089,632 A
- Clamshell action post hole digger26 Dec 1995US 5,478,128 A
- Apparatus and a method of drilling holes2 Apr 2026US 2026/0092502 A1Golf & Machines Aps
- Adhesion suppressing member, work tool, claw member, and adhesion suppressing method1 May 2025US 2025/0137221 A1Obayashi Corporation
- Soil working device and method for creating a substantially vertical hole in the ground27 Jun 2024US 2024/0209726 A1BAUER Maschinen GmbH
- Downhole Debris-Collecting Tool Having An Improved Valve21 Feb 2019US 2019/0055802 A1Altus Intervention (Technologies) AS
Most cited
By later US patents