E21B 19/07
Slip-type elevators
E21B19/07 (Slip-type elevators) appears on 323 US grants and 303 published applications in this corpus.
Search patents in E21B- Granted patents
- 323
- Published applications
- 303
- Assignees
- 122
- Inventors
- 425
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 9 | 8 |
| 2003 | 9 | 10 |
| 2004 | 3 | 9 |
| 2005 | 6 | 8 |
| 2006 | 9 | 13 |
| 2007 | 9 | 5 |
| 2008 | 5 | 11 |
| 2009 | 5 | 15 |
| 2010 | 10 | 11 |
| 2011 | 17 | 13 |
| 2012 | 9 | 12 |
| 2013 | 8 | 15 |
| 2014 | 12 | 11 |
| 2015 | 14 | 34 |
| 2016 | 16 | 13 |
| 2017 | 21 | 20 |
| 2018 | 19 | 15 |
| 2019 | 12 | 14 |
| 2020 | 20 | 18 |
| 2021 | 17 | 12 |
| 2022 | 10 | 8 |
| 2023 | 6 | 1 |
| 2024 | 7 | 11 |
| 2025 | 7 | 8 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for moving tubular rotary slips25 Aug 2026US 12,716,301 B2Helmerich & Payne, Inc.
- Spindle for drilling head28 Jul 2026US 12,692,747 B2
- Seal assembly for an elevator cabin and a method to operate the same30 Jun 2026US 12,668,457 B2
- Breakaway link for a slips lifter2 Jun 2026US 12,644,346 B2Nabors Drilling Technologies USA, Inc.
- Extended range spider3 Feb 2026US 12,540,515 B2Frank's International, LLC
- Spring assist system with positional feedback for carriers of snubbing slip bowls1 Oct 2026US 2026/0298036 A1Consolidated Rig Works, L.P.
- Link-tilt adaptor with one or more shear pins6 Aug 2026US 2026/0226803 A1Parker Drilling Company
- Multi-stage slips actuation for use with a subterranean well23 Jul 2026US 2026/0210196 A1
- A seal assembly for an elevator cabin and a method to operate the same18 Jun 2026US 2026/0167456 A1
- Insert and method, and system for handling different diameter tubulars in tubular handling equipment14 May 2026US 2026/0132688 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Well system221US 6,296,066 B1Halliburton Energy Services.Inc. · 2001
- Top drive casing system213US 6,536,520 B1Weatherford/Lamb, Inc. · 2003
- Apparatus for gripping a down hole tubular for support and rotation176US 5,297,833 AW-N Apache Corporation · 1994
- Well system175US 7,172,038 B2Halliburton Energy Services.Inc. · 2007
- Pipe running tool166US 6,443,241 B1Varco I/P, Inc. · 2002