E21B 10/325
The cutter being shifted by a spring mechanism
Official title: {the cutter being shifted by a spring mechanism}
E21B10/325 (The cutter being shifted by a spring mechanism) appears on 42 US grants and 43 published applications in this corpus.
Search patents in E21B- Granted patents
- 42
- Published applications
- 43
- Assignees
- 24
- Inventors
- 98
- Latest grant
- 11 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 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 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 1 |
| 2009 | 2 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 5 |
| 2015 | 2 | 1 |
| 2016 | 6 | 4 |
| 2017 | 2 | 3 |
| 2018 | 1 | 2 |
| 2019 | 2 | 6 |
| 2020 | 4 | 4 |
| 2021 | 4 | 2 |
| 2022 | 5 | 3 |
| 2023 | 4 | 3 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Modular casing reamer shoe system with jarring capability11 Jun 2024US 12,006,769 B2Saudi Arabian Oil Company
- Drill bit with multiple cutting structures7 Nov 2023US 11,808,087 B2Varel Europe S.A.S.
- Underreamer26 Sep 2023US 11,767,715 B2Transco Manufacturing Australia Pty Ltd
- Depth of cut control activation system4 Jul 2023US 11,692,402 B2Halliburton Energy Services.Inc.
- Deploying material to limit losses of drilling fluid in a wellbore9 May 2023US 11,643,878 B2Saudi Arabian Oil Company
- Adjustable drill string reamer7 Sep 2023US 2023/0279729 A1Saudi Arabian Oil Company
- Modular casing reamer shoe system with jarring capability27 Apr 2023US 2023/0125843 A1Saudi Arabian Oil Company
- Depth of cut control activation system20 Apr 2023US 2023/0117681 A1Halliburton Energy Services.Inc.
- Drill bit with multiple cutting structures18 Aug 2022US 2022/0259926 A1Varel Europe S.A.S.
- Hybrid reamer and stabilizer24 Feb 2022US 2022/0056764 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Rotary drill bit having moveable formation-engaging members130US 6,142,250 ACamco International (UK) Limited · 2000
- Apparatus and method for drilling and reaming a borehole55US 6,920,944 B2Halliburton Energy Services.Inc. · 2005
- Drilling and hole enlargement device35US 7,506,703 B2Smith International, Inc. · 2009
- Apparatus and method for drilling and reaming a borehole34US 7,083,010 B2Halliburton Energy Services.Inc. · 2006
- Drilling and hole enlargement device29US 7,757,787 B2Smith International, Inc. · 2010