E21B 10/10
With roller axle supported at both ends
Official title: with roller axle supported at both ends
E21B10/10 (With roller axle supported at both ends) appears on 67 US grants and 23 published applications in this corpus.
Search patents in E21B- Granted patents
- 67
- Published applications
- 23
- Assignees
- 30
- Inventors
- 87
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 3 |
| 2016 | 1 | 4 |
| 2017 | 0 | 0 |
| 2018 | 1 | 4 |
| 2019 | 2 | 1 |
| 2020 | 3 | 2 |
| 2021 | 2 | 1 |
| 2022 | 3 | 1 |
| 2023 | 0 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid bit10 Sep 2024US 12,084,919 B2Schlumberger Technology Corporation
- Drill bit with offset counter-rotating cutters18 Jun 2024US 12,012,807 B2Halliburton Energy Services.Inc.
- Roller reamer9 Aug 2022US 11,408,231 B2Hole Opener Corporation, International
- Drill bit with adjustable inner gauge configuration5 Apr 2022US 11,293,232 B2Halliburton Energy Services.Inc.
- Downhole probe tool8 Feb 2022US 11,242,747 B2Saudi Arabian Oil Company
- Raise boring tool with a digital identification tag2 Apr 2026US 2026/0091435 A1Sandvik Mining and Construction Tools AB
- Drill bit with offset counter-rotating cutters1 Jun 2023US 2023/0167688 A1Halliburton Energy Services.Inc.
- Hybrid bit14 Jul 2022US 2022/0220807 A1Schlumberger Technology Corporation
- Downhole probe tool23 Sep 2021US 2021/0293144 A1Saudi Arabian Oil Company
- Drill Bit With Adjustable Inner Gauge Configuration28 May 2020US 2020/0165876 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Drill-bit with full offset cutter bodies102US 4,552,232 ASpiral Drilling Systems, Inc. · 1985
- Hole opener with multisized, replaceable arms and cutters60US 6,527,066 B12003
- Earth-boring bit having cutter with replaceable kerf ring with contoured inserts32US 5,785,135 ABaker Hughes Incorporated · 1998
- Raise bit with cutters stepped in a spiral and flywheel31US 4,381,038 AThe Robbins Company · 1983
- Expandable rock bit21US 4,456,082 ASmith International, Inc. · 1984