E21B 10/327
The cutter being pivoted about a longitudinal axis
Official title: {the cutter being pivoted about a longitudinal axis (E21B10/34 takes precedence)}
E21B10/327 (The cutter being pivoted about a longitudinal axis) appears on 43 US grants and 28 published applications in this corpus.
Search patents in E21B- Granted patents
- 43
- Published applications
- 28
- Assignees
- 31
- Inventors
- 79
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
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| 1985 | 1 | 0 |
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| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 3 |
| 2014 | 1 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 6 |
| 2023 | 2 | 2 |
| 2024 | 3 | 1 |
| 2025 | 4 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Connected deployable arms off of cylindrical surfaces for increased mobility2 Dec 2025US 12,485,700 B2Brigham Young University
- Wellbore notching assembly23 Sep 2025US 12,421,803 B2Saudi Arabian Oil Company
- Drilling tool and method for producing a bore in the ground15 Jul 2025US 12,359,511 B2BAUER Maschinen GmbH
- Underreamer drill hammer6 May 2025US 12,291,925 B1Center Rock Inc.
- Wellbore notching assembly27 Aug 2024US 12,071,814 B2Saudi Arabian Oil Company
- Drilling apparatus with wings15 Jan 2026US 2026/0015912 A1
- Underreamer drill hammer24 Apr 2025US 2025/0129671 A1Center Rock Inc.
- Drilling tool and method for producing a bore in the ground6 Feb 2025US 2025/0043636 A1BAUER Maschinen GmbH
- Wellbore Notching Assembly21 Nov 2024US 2024/0384603 A1Saudi Arabian Oil Company
- Radial cutting assembly for drilling tool1 Jun 2023US 2023/0167691 A1
Most cited
By later US patents
- Rotary drill bit having moveable formation-engaging members130US 6,142,250 ACamco International (UK) Limited · 2000
- Drilling tool for percussive and rotary drilling54US 5,259,469 AUniroc Aktiebolag · 1993
- Drill tool29US 4,770,259 ASantrade Ltd. · 1988
- Drills for piles and soil stabilization, and drilling method28US 5,219,246 ACatawa Pty. Ltd. · 1993
- Method and apparatus for sinking a cased borehole for producing cased pile foundations23US 4,202,416 AStahl- und Apparatebau Hans Leffer GmbH · 1980