E21B 19/20
Combined feeding from rack and connecting
Official title: Combined feeding from rack and connecting, e.g. automatically
E21B19/20 (Combined feeding from rack and connecting) appears on 382 US grants and 266 published applications in this corpus.
Search patents in E21B- Granted patents
- 382
- Published applications
- 266
- Assignees
- 193
- Inventors
- 662
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 18 | 0 |
| 1987 | 10 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 7 |
| 2003 | 11 | 5 |
| 2004 | 3 | 7 |
| 2005 | 6 | 7 |
| 2006 | 6 | 3 |
| 2007 | 3 | 3 |
| 2008 | 5 | 8 |
| 2009 | 4 | 4 |
| 2010 | 6 | 5 |
| 2011 | 4 | 6 |
| 2012 | 5 | 5 |
| 2013 | 6 | 23 |
| 2014 | 5 | 11 |
| 2015 | 13 | 11 |
| 2016 | 17 | 13 |
| 2017 | 14 | 11 |
| 2018 | 12 | 15 |
| 2019 | 13 | 17 |
| 2020 | 19 | 19 |
| 2021 | 14 | 22 |
| 2022 | 19 | 15 |
| 2023 | 15 | 12 |
| 2024 | 14 | 18 |
| 2025 | 18 | 10 |
| 2026 | 14 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rod handling system for a drilling rig6 Oct 2026US 12,753,663 B2Tribe Tech UK Ltd
- Automated drilling arrangement1 Sep 2026US 12,723,476 B2
- Drilling tool changer device and a method for making the change25 Aug 2026US 12,716,303 B2
- System and method for locating, measuring, counting, and aiding in the handling of drill pipes23 Jun 2026US 12,663,260 B2Helmerich & Payne Technologies, LLC
- Modular pipe loader assembly2 Jun 2026US 12,644,347 B2The Charles Machine Works, Inc.
- Drilling automation system24 Sep 2026US 2026/0286793 A1Transocean Sedco Forex Ventures Limited
- Horizontal directional drilling system with drill string breakout monitoring10 Sep 2026US 2026/0266146 A1Vermeer Manufacturing Company
- End effectors for automated pipe handling27 Aug 2026US 2026/0251024 A1National Oilwell Varco, L. P.
- Integrated well construction system operations25 Jun 2026US 2026/0176954 A1Schlumberger Technology Corporation
- Multi-domain planning controller for drilling operations16 Apr 2026US 2026/0104690 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Apparatus for handling well pipe213US 4,765,401 AVarco International, Inc. · 1988
- Automated apparatus for handling elongated well elements such as pipes182US 4,604,724 AGomelskoe Spetsialnoe Konstruktorsko-Tekhnologicheskoe Bjuro Seismicheskoi Tekhniki S Opytnym Proizvodstvom · 1986
- Hydraulic top drive for wells174US 4,813,493 ATriten Corporation · 1989
- Pipe handling apparatus and method146US 4,791,997 AVetco Gray Inc. · 1988
- Portable workover rig with extendable mast substructure, platform mounted drawworks and adjustable wellhead anchor143US 4,290,495 AHydra-Rig, Inc. · 1981