E21B 17/1042
Elastomer protector or centering means
Official title: {Elastomer protector or centering means}
E21B17/1042 (Elastomer protector or centering means) appears on 208 US grants and 178 published applications in this corpus.
Search patents in E21B- Granted patents
- 208
- Published applications
- 178
- Assignees
- 123
- Inventors
- 318
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 2 | 3 |
| 2003 | 3 | 5 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 3 |
| 2007 | 2 | 6 |
| 2008 | 4 | 5 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 1 | 6 |
| 2012 | 5 | 6 |
| 2013 | 1 | 6 |
| 2014 | 5 | 13 |
| 2015 | 11 | 10 |
| 2016 | 9 | 13 |
| 2017 | 9 | 11 |
| 2018 | 11 | 17 |
| 2019 | 11 | 14 |
| 2020 | 13 | 11 |
| 2021 | 14 | 8 |
| 2022 | 11 | 8 |
| 2023 | 5 | 7 |
| 2024 | 7 | 7 |
| 2025 | 7 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vortex-induced vibration strake arrangements28 Jul 2026US 12,692,958 B2Advanced Innergy Ltd.
- Locator for survey apparatus2 Jun 2026US 12,644,345 B2Imdex Technologies Pty Ltd
- Customized centralizing housing for downhole tool13 Jan 2026US 12,523,104 B2Halliburton Energy Services.Inc.
- Stabilizer including modified helical wellbore stabilizing elements7 Oct 2025US 12,435,580 B2Halliburton Energy Services.Inc.
- Shank adapter, rock drilling machine and method29 Jul 2025US 12,371,952 B2Sandvik Mining and Construction Oy
- Vortex-induced vibration strake arrangements8 Oct 2026US 2026/0309253 A1Advanced Innergy Ltd.
- Installation of subsea risers16 Jul 2026US 2026/0201755 A1Subsea 7 Norway AS
- Tool For Removing A Rubber Protector From A Riser Flange5 Feb 2026US 2026/0034652 A1
- Stabilizer including modified helical wellbore stabilizing elements8 Jan 2026US 2026/0009297 A1Halliburton Energy Services.Inc.
- Pipe protection sleeve16 Oct 2025US 2025/0320949 A1Oceaneering International, Inc.
Most cited
By later US patents
- Coil tubing supported electrical submersible pump121US 5,269,377 ABaker Hughes Incorporated · 1993
- Expandable centralizer for downhole tubulars118US 6,725,939 B2Baker Hughes Incorporated · 2004
- Well tool104US 4,380,347 A1983
- Well tool protector93US 3,942,824 A1976
- Drill pipe/casing protector and method93US 5,069,297 ARudolph E. Krueger, Inc. · 1991