E21B 33/1292
With means for anchoring against downward and upward movement
Official title: {with means for anchoring against downward and upward movement}
E21B33/1292 (With means for anchoring against downward and upward movement) appears on 204 US grants and 168 published applications in this corpus.
Search patents in E21B- Granted patents
- 204
- Published applications
- 168
- Assignees
- 84
- Inventors
- 319
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 10 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 11 |
| 2014 | 3 | 4 |
| 2015 | 12 | 17 |
| 2016 | 6 | 13 |
| 2017 | 11 | 10 |
| 2018 | 13 | 24 |
| 2019 | 15 | 9 |
| 2020 | 15 | 11 |
| 2021 | 8 | 15 |
| 2022 | 13 | 18 |
| 2023 | 14 | 10 |
| 2024 | 10 | 7 |
| 2025 | 14 | 6 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Expandable metal slip ring for use with a sealing assembly30 Dec 2025US 12,509,958 B2Halliburton Energy Services.Inc.
- Plugging assemblies for plugging cased wellbores1 Oct 2026US 2026/0298044 A1G&H Diversified Manufacturing LP
- Expandable metal slip ring for use with a sealing assembly21 May 2026US 2026/0139565 A1Halliburton Energy Services.Inc.
- Sealing on service packers30 Apr 2026US 2026/0117614 A1Expro North Sea Limited
- Plugging assemblies for plugging cased wellbores14 Aug 2025US 2025/0257622 A1G&H Diversified Manufacturing LP
- Composite Cement Retainer17 Jul 2025US 2025/0230726 A1
Most cited
By later US patents
- Drillable, testing, treat, squeeze packer140US 4,834,184 AHalliburton Company · 1989
- Retrievable bridge plug and retrieving tool139US 5,813,456 A1998
- Well tool having a metal seal and bi-directional lock123US 4,588,030 ACamco, Incorporated · 1986
- Retrievable bridge plug and a running tool therefor122US 5,366,010 A1994
- Apparatus for installing a liner within a well bore118US 4,848,459 ADresser Industries, Inc. · 1989