E21B 19/02
Rod or cable suspensions
E21B19/02 (Rod or cable suspensions) appears on 1,036 US grants and 928 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,036
- Published applications
- 928
- Assignees
- 345
- Inventors
- 1,366
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 11 | 0 |
| 1984 | 21 | 0 |
| 1985 | 8 | 0 |
| 1986 | 11 | 0 |
| 1987 | 8 | 0 |
| 1988 | 9 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 14 | 0 |
| 1999 | 9 | 0 |
| 2000 | 12 | 0 |
| 2001 | 13 | 5 |
| 2002 | 15 | 11 |
| 2003 | 15 | 19 |
| 2004 | 11 | 16 |
| 2005 | 11 | 19 |
| 2006 | 17 | 31 |
| 2007 | 21 | 22 |
| 2008 | 23 | 34 |
| 2009 | 16 | 33 |
| 2010 | 29 | 35 |
| 2011 | 30 | 29 |
| 2012 | 28 | 29 |
| 2013 | 22 | 46 |
| 2014 | 37 | 40 |
| 2015 | 43 | 84 |
| 2016 | 48 | 51 |
| 2017 | 60 | 61 |
| 2018 | 56 | 62 |
| 2019 | 58 | 64 |
| 2020 | 64 | 59 |
| 2021 | 60 | 54 |
| 2022 | 56 | 36 |
| 2023 | 33 | 12 |
| 2024 | 32 | 37 |
| 2025 | 32 | 23 |
| 2026 | 21 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tubular handling with spider control system6 Oct 2026US 12,753,661 B2Weatherford Technology Holdings, LLC
- Boost system for a hoisting system15 Sep 2026US 12,735,949 B2Schlumberger Technology Corporation
- Self-contained spring inserter for drug delivery infusion set1 Sep 2026US 12,723,474 B2Becton, Dickinson and Company
- Method and apparatus for moving tubular rotary slips25 Aug 2026US 12,716,301 B2Helmerich & Payne, Inc.
- Spring bail cylinder apparatus11 Aug 2026US 12,704,028 B2
- Self-contained spring inserter for drug delivery infusion set8 Oct 2026US 2026/0308990 A1Becton, Dickinson and Company
- Spring assist system with positional feedback for carriers of snubbing slip bowls1 Oct 2026US 2026/0298036 A1Consolidated Rig Works, L.P.
- Casing running tool multi-gripper10 Sep 2026US 2026/0266145 A1Nabors Drilling Technologies USA, Inc.
- End effectors for automated pipe handling27 Aug 2026US 2026/0251024 A1National Oilwell Varco, L. P.
- Retention system for retaining deck bushing of drilling machine13 Aug 2026US 2026/0234997 A1Caterpillar Global Mining Equipment LLC
Most cited
By later US patents
- Well system221US 6,296,066 B1Halliburton Energy Services.Inc. · 2001
- Drilling of wells with top drive unit220US 4,449,596 AVarco International, Inc. · 1984
- 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