E21B 4/006
Mechanical motion converting means
Official title: {Mechanical motion converting means, e.g. reduction gearings (E21B4/10 takes precedence)}
E21B4/006 (Mechanical motion converting means) appears on 221 US grants and 189 published applications in this corpus.
Search patents in E21B- Granted patents
- 221
- Published applications
- 189
- Assignees
- 115
- Inventors
- 482
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 3 |
| 2007 | 3 | 2 |
| 2008 | 3 | 8 |
| 2009 | 7 | 6 |
| 2010 | 6 | 7 |
| 2011 | 3 | 6 |
| 2012 | 0 | 5 |
| 2013 | 7 | 5 |
| 2014 | 7 | 11 |
| 2015 | 11 | 17 |
| 2016 | 8 | 18 |
| 2017 | 9 | 8 |
| 2018 | 10 | 11 |
| 2019 | 11 | 14 |
| 2020 | 12 | 4 |
| 2021 | 12 | 15 |
| 2022 | 8 | 5 |
| 2023 | 10 | 6 |
| 2024 | 10 | 9 |
| 2025 | 17 | 11 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular anti-rotation drilling systems and methods actuated by fluid pressure29 Sep 2026US 12,747,654 B1National Technology & Engineering Solutions of Sandia, LLC
- Downhole torque reducer21 Jul 2026US 12,687,071 B2Rotojar Innovations Limited
- Systems and methods for transmitting torque21 Jul 2026US 12,687,072 B1Schlumberger Technology Corporation
- Gear reducer14 Jul 2026US 12,680,383 B1Turbo Drill Industries, Inc.
- Torque-adaptive impact tool suitable for PDC bit14 Jul 2026US 12,680,385 B2Southwest Petroleum University
- Electric annular with rotational gear driven pusher14 May 2026US 2026/0132700 A1Schlumberger Technology Corporation
- Joint for downhole motor23 Apr 2026US 2026/0110221 A1
- Power head of directional drill26 Feb 2026US 2026/0055663 A1CCTEG Chongqing Research Institute Co., Ltd.
- Mechanics-electronics-hydraulics integrated directional tool for continuous tubing drilling5 Feb 2026US 2026/0035998 A1China Petroleum & Chemical Corporation
- Drilling robot1 Jan 2026US 2026/0002414 A1ZHAW - Zürcher Hochschule Für Angewandte Wissenschaften
Most cited
By later US patents
- Directional drilling apparatus171US 6,364,034 B12002
- Apparatus and method for orienting a downhole tool126US 6,419,014 B1Schlumberger Technology Corporation · 2002
- Drilling system122US 5,060,737 AFramo Developments (UK) Limited · 1991
- Self-propelled drilling head88US 4,314,615 A1982
- Apparatus for reducing hydro-static pressure at the drill bit79US 4,744,426 A1988