E21B 11/06
Earth or rock drilling: other drilling tools: with driven cutting chains or
Official title: with driven cutting chains or similarly driven tools
E21B11/06 (Earth or rock drilling: other drilling tools: with driven cutting chains or) appears on 11 US grants and 9 published applications in this corpus.
Search patents in E21B- Granted patents
- 11
- Published applications
- 9
- Assignees
- 7
- Inventors
- 25
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 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 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for using controlled fractures in enhanced geothermal systems20 Jan 2026US 12,529,296 B2Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
- Drilling and cutting device26 Jan 2021US 10,900,354 B2
- Drilling system with teeth driven in opposite directions27 Nov 2018US 10,138,685 B1
- Method and apparatus for increasing well productivity15 Aug 2017US 9,732,561 B2
- Method of drilling and opening reservoir using an oriented fissure to enhance hydrocarbon flow6 Nov 2012US 8,302,690 B2Jimni Development LLC
- System and Method for Using Controlled Fractures in Enhanced Geothermal Systems22 Aug 2024US 2024/0280295 A1Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
- Drilling and cutting device1 Mar 2018US 2018/0058215 A1
- Method and Apparatus for Increasing Well Productivity16 Mar 2017US 2017/0074043 A1
- Mechanized slot drilling11 Aug 2016US 2016/0230523 A9Shell Oil Company
- Excavating deposits from an underground formation layer29 Oct 2015US 2015/0308267 A1
Most cited
By later US patents
- Method and apparatus for increasing well productivity20US 9,732,561 B22017
- Earth boring apparatus8US 4,589,502 ACementation Company of America, Incorporated · 1986
- Apparatus for forming a slot in a wellbore7US 6,024,166 AThe Red Baron (Oil Tools Rental) Limited · 2000
- Steerable boring machine6US 5,924,500 ATracto-Technik Paul Schmidt Spezialmaschinen · 1999
- Drilling and opening reservoir using an oriented fissure to enhance hydrocarbon flow and method of making4US 7,647,967 B2Jimni Development LLC · 2010