E21B 10/66
The cutting element movable through the drilling pipe and laterally shiftable
Official title: the cutting element movable through the drilling pipe and laterally shiftable
E21B10/66 (The cutting element movable through the drilling pipe and laterally shiftable) appears on 70 US grants and 26 published applications in this corpus.
Search patents in E21B- Granted patents
- 70
- Published applications
- 26
- Assignees
- 33
- Inventors
- 90
- Latest grant
- 18 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 0 |
| 2009 | 3 | 6 |
| 2010 | 5 | 0 |
| 2011 | 2 | 3 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 3 | 2 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Drilling device18 Feb 2020US 10,563,462 B2Mincon Nordic Oy
- Retractable auger head31 Dec 2019US 10,519,719 B2Radius HDD Direct, LLC
- Apparatus and method for modifying the sidewalls of a borehole17 May 2016US 9,341,026 B2Sinvent AS
- High-speed triple string drilling system3 Jun 2014US 8,739,902 B2Dura Drilling, Inc.
- Torque transmitting elastomeric element in casing drilling drill lock assembly25 Mar 2014US 8,678,108 B1Schlumberger Technology Corporation
- Drill bit and method for drilling hole for pipe to be installed in ground28 Aug 2025US 2025/0270881 A1Mincon Nordic Oy
- Drilling device28 Jun 2018US 2018/0179824 A1Mincon Nordic Oy
- Well drilling system21 Jun 2018US 2018/0171722 A1
- Retractable Auger Head30 Nov 2017US 2017/0342776 A1Radius HDD Direct, LLC
- Method of forming a bore27 Oct 2016US 2016/0312575 A1Technology Ventures International Limited
Most cited
By later US patents
- Bit for subterranean drilling fabricated from separately-formed major components380US 5,560,440 ABaker Hughes Incorporated · 1996
- Drilling with casing and retrievable drill bit314US 5,271,472 AAtlantic Richfield Company · 1993
- Drilling with casing and retrievable drill bit289US 5,197,553 AAtlantic Richfield Company · 1993
- Expandable gage bit for drilling and method of drilling271US 5,361,859 ABaker Hughes Incorporated · 1994
- Downhole drill bit and bit coupling155US 4,962,822 ANuma Tool Company · 1990