E21B 33/0375
Corrosion protection means
Official title: {Corrosion protection means}
E21B33/0375 (Corrosion protection means) appears on 12 US grants and 13 published applications in this corpus.
Search patents in E21B- Granted patents
- 12
- Published applications
- 13
- Assignees
- 7
- Inventors
- 23
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 2 | 2 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Robust downhole pump barrel12 May 2026US 12,624,691 B2Q2 Artificial Lift Services LLC
- Protecting wellhead equipment from treatment fluids29 Oct 2024US 12,129,731 B2Saudi Arabian Oil Company
- Systems and methods in which colloidal silica gel is used to resist corrosion of a wellhead component in a well cellar6 Feb 2024US 11,891,564 B2Saudi Arabian Oil Company
- Systems and methods for a mudline suspension system corrosion cap and running tool with shearing screws4 Jul 2023US 11,692,407 B1Saudi Arabian Oil Company
- ALD-thin layer coating applications for sensing telemetry7 Feb 2023US 11,572,784 B2Halliburton Energy Services.Inc.
- Robust Downhole Pump Barrel20 Aug 2026US 2026/0243245 A1Q2 Artificial Lift Services LLC
- Robust downhole pump barrel15 May 2025US 2025/0154945 A1Ravdos Holdings Inc.
- Protecting wellhead equipment from treatment fluids2 Nov 2023US 2023/0349257 A1Saudi Arabian Oil Company
- Systems and methods in which colloidal silica gel is used to resist corrosion of a wellhead component in a well cellar5 Oct 2023US 2023/0313020 A1Saudi Arabian Oil Company
- Ald-thin layer coating applications for sensing telemetry25 Nov 2021US 2021/0363880 A1Halliburton Energy Services.Inc.
Most cited
By later US patents