E21B 19/12
Rope clamps
Official title: Rope clamps {; Rod, casings or tube clamps not secured to elevators}
E21B19/12 (Rope clamps) appears on 75 US grants and 68 published applications in this corpus.
Search patents in E21B- Granted patents
- 75
- Published applications
- 68
- Assignees
- 60
- Inventors
- 142
- Latest grant
- 29 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 3 | 5 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 3 | 0 |
| 2012 | 1 | 4 |
| 2013 | 4 | 7 |
| 2014 | 2 | 4 |
| 2015 | 3 | 5 |
| 2016 | 3 | 5 |
| 2017 | 3 | 2 |
| 2018 | 5 | 4 |
| 2019 | 5 | 4 |
| 2020 | 6 | 5 |
| 2021 | 3 | 3 |
| 2022 | 4 | 2 |
| 2023 | 4 | 3 |
| 2024 | 2 | 0 |
| 2025 | 0 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for securing a flow control device against a pipe29 Oct 2024US 12,129,742 B2Variperm Energy Services Inc.
- Gooseneck connector system28 May 2024US 11,993,987 B2Schlumberger Technology Corporation
- Cable protector assemblies and related methods and systems7 Nov 2023US 11,811,206 B1Forum US, Inc.
- Tool joint clamp17 Oct 2023US 11,788,363 B2Noetic Technologies Inc.
- Gooseneck connector system14 Mar 2023US 11,603,718 B2Schlumberger Technology Corporation
- Safety Clamp16 Apr 2026US 2026/0103958 A1
- A clamp device and a method of connecting such a clamp device onto a cylindrical element10 Apr 2025US 2025/0116286 A1Torsion Tool Company AS
- Method of Determining a Grip Coefficient13 Feb 2025US 2025/0052665 A1Plexus Holdings, PLC.
- Rod and casing handler24 Aug 2023US 2023/0264370 A1Tei Rock Drills, Inc.
- Gooseneck connector system6 Jul 2023US 2023/0212917 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Polish rod clamping device20US 7,673,674 B2Stream-Flo Industries Ltd. · 2010
- Single joint elevator having deployable jaws19US 8,141,923 B2Frank's Casing Crew and Rental Tools, Inc. · 2012
- Drilling rig column racker and methods of erecting same17US 9,879,442 B2Nabors Industries, Inc. · 2018
- Sucker rod shock absorber16US 4,354,397 A1982
- Method and a device for preventing pipeskidding14US 7,337,861 B2Malm Orstad AS · 2008