E21B 33/1265
With mechanical slips
Official title: {with mechanical slips}
E21B33/1265 (With mechanical slips) appears on 31 US grants and 26 published applications in this corpus.
Search patents in E21B- Granted patents
- 31
- Published applications
- 26
- Assignees
- 21
- Inventors
- 53
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 3 | 0 |
| 2015 | 1 | 3 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 2 | 3 |
| 2019 | 3 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 3 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Geothermal system materials30 Dec 2025US 12,509,948 B2
- Packer system, and process to settle and retrieve15 Apr 2025US 12,276,174 B2Jp International Business LLC
- Well initiation service system with packer control system4 Feb 2025US 12,215,579 B1Saudi Arabian Oil Company
- Downhole tool securing device and frac plug8 Oct 2024US 12,110,758 B2Kureha Corporation
- Well tool device for transporting a heat generating mixture into a well pipe24 Sep 2024US 12,098,611 B2Interwell Norway AS
- Geothermal system materials5 Feb 2026US 2026/0036003 A1A.L.E. Systems, Inc.
- Packer system, and process to settle and retrieve9 Jan 2025US 2025/0012166 A1Jp Internationa Business LLC
- Geothermal system materials30 May 2024US 2024/0175332 A1Multiscale Systems, Inc.
- Packer system, and process to settle and retrieve22 Feb 2024US 2024/0060387 A1Jp International Business LLC
- Downhole tool securing device and frac plug15 Feb 2024US 2024/0052720 A1Kureha Corporation
Most cited
By later US patents
- Multi-zone isolation tool and method of stimulating and testing a subterranean well113US 6,315,041 B12001
- Downhole apparatus with packer cup and slip62US 8,113,276 B22012
- Conductor pipe plug40US 4,262,702 AHalliburton Company · 1981
- Multiple cup bridge plug for sealing a well casing and method31US 5,010,958 ASchlumberger Technology Corporation · 1991
- Downhole apparatus with packer cup and slip31US 8,336,635 B22012