E21B 6/02
The rotation being continuous
Official title: the rotation being continuous
E21B6/02 (The rotation being continuous) appears on 87 US grants and 107 published applications in this corpus.
Search patents in E21B- Granted patents
- 87
- Published applications
- 107
- Assignees
- 64
- Inventors
- 185
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 4 |
| 2003 | 1 | 0 |
| 2004 | 2 | 2 |
| 2005 | 2 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 3 | 0 |
| 2009 | 2 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 2 | 8 |
| 2015 | 4 | 2 |
| 2016 | 2 | 6 |
| 2017 | 5 | 7 |
| 2018 | 6 | 14 |
| 2019 | 9 | 7 |
| 2020 | 12 | 10 |
| 2021 | 7 | 4 |
| 2022 | 5 | 5 |
| 2023 | 4 | 5 |
| 2024 | 4 | 5 |
| 2025 | 4 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Handheld augers operable in a normal mode and a breaker mode14 Jul 2026US 12,680,388 B2Milwaukee Electric Tool Corporation
- Drilling assembly14 Apr 2026US 12,601,223 B2BAUER Spezialtiefbau GmbH
- Air motor assembly23 Sep 2025US 12,421,847 B1Directional Air Drilling International, LLC
- Shank adapter, rock drilling machine and method29 Jul 2025US 12,371,952 B2Sandvik Mining and Construction Oy
- Flushing element, rock drilling machine and method4 Mar 2025US 12,241,319 B2Sandvik Mining and Construction Oy
- Augers8 Oct 2026US 2026/0308981 A1Milwaukee Electric Tool Corporation
- Shank sleeve assembly, rock drilling machine and method10 Sep 2026US 2026/0266135 A1Sandvik Mining and Construction Oy
- Water well top head drill adapter18 Jun 2026US 2026/0168329 A1Fulton Fusion, Inc.
- Air motor assembly20 Nov 2025US 2025/0354482 A1Directional Air Drilling International, LLC
- Drilling assembly6 Nov 2025US 2025/0341132 A1BAUER Spezialtiefbau GmbH
Most cited
By later US patents
- Reverse circulation drilling system with bit locked underreamer arms21US 6,209,665 B12001
- Drilling system18US 6,749,031 B22004
- Rock drilling apparatus17US 4,387,775 AAtlas Copco Aktiebolag · 1983
- Percussive drill bit14US 7,546,888 B2Shell Oil Company · 2009
- Flow controlling downhole tool14US 9,765,584 B2Tll Oilfield Consulting Ltd. · 2017