E21B 17/1085
Wear protectors
Official title: {Wear protectors; Blast joints; Hard facing}
E21B17/1085 (Wear protectors) appears on 270 US grants and 269 published applications in this corpus.
Search patents in E21B- Granted patents
- 270
- Published applications
- 269
- Assignees
- 137
- Inventors
- 559
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 2 |
| 2004 | 2 | 5 |
| 2005 | 1 | 2 |
| 2006 | 4 | 3 |
| 2007 | 0 | 3 |
| 2008 | 4 | 6 |
| 2009 | 3 | 9 |
| 2010 | 5 | 10 |
| 2011 | 8 | 13 |
| 2012 | 5 | 14 |
| 2013 | 10 | 12 |
| 2014 | 12 | 15 |
| 2015 | 12 | 26 |
| 2016 | 12 | 14 |
| 2017 | 14 | 17 |
| 2018 | 12 | 15 |
| 2019 | 13 | 15 |
| 2020 | 20 | 16 |
| 2021 | 13 | 17 |
| 2022 | 14 | 18 |
| 2023 | 18 | 17 |
| 2024 | 10 | 8 |
| 2025 | 12 | 4 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Work string tubing connection restoration7 Apr 2026US 12,594,616 B2Postle Industries, Inc.
- Coatings for wear surfaces and related apparatuses, devices, systems, and methods10 Feb 2026US 12,546,172 B2ChampionX LLC
- Completing and working over a wellbore14 Oct 2025US 12,442,257 B2Saudi Arabian Oil Company
- Standoff for wireline7 Oct 2025US 12,435,581 B2Chevron U.S.A.Inc.
- Wear support assemblies for raise boring tools9 Sep 2025US 12,410,665 B2Sandvik Mining and Construction Tools AB
- Work string tubing connection restoration24 Sep 2026US 2026/0284768 A1Postle Industries, Inc.
- Hardbanding method and apparatus28 May 2026US 2026/0146506 A1Postle Industries, Inc.
- Extended wear drill pipes and methods of making and using same30 Apr 2026US 2026/0117605 A1Command Tubular Products, LLC
- Drill pipe for rotary drilling19 Mar 2026US 2026/0078642 A1Terelion, LLC
- Coatings for wear surfaces and related apparatuses, devices, systems, and methods12 Mar 2026US 2026/0071504 A1ChampionX LLC
Most cited
By later US patents
- Abrasive slurry delivery apparatus and methods of using same136US 5,636,691 AHalliburton Energy Services.Inc. · 1997
- Blast joint for snubbing unit109US 5,059,043 AVermont American Corporation · 1991
- Blast joint for snubbing unit109US 5,314,209 AVermont American Corporation · 1994
- Abrasive slurry delivery apparatus and methods of using same108US 6,491,097 B1Halliburton Energy Services.Inc. · 2002
- Blast joint for snubbing installation79US 4,915,177 A1990