E21B 35/00
Methods or apparatus for preventing or extinguishing fires
E21B35/00 (Methods or apparatus for preventing or extinguishing fires) appears on 109 US grants and 28 published applications in this corpus.
Search patents in E21B- Granted patents
- 109
- Published applications
- 28
- Assignees
- 47
- Inventors
- 158
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 22 | 0 |
| 1993 | 11 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 2 | 3 |
| 2022 | 2 | 4 |
| 2023 | 5 | 5 |
| 2024 | 7 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Welding enclosure with magnetic-latching doorway18 Aug 2026US 12,708,966 B1Gulf Island Fabrication, Inc.
- Connection device, control box component and fracturing apparatus15 Apr 2025US 12,276,187 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Intelligent automated prevention of high pressure flare events11 Mar 2025US 12,247,462 B1EOG Resources, Inc.
- Fracturing device10 Sep 2024US 12,084,955 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Fusible cap adapter28 May 2024US 11,994,224 B2Saudi Arabian Oil Company
- Systems and methods for relief wellbore planning9 Jul 2026US 2026/0193963 A1Schlumberger Technology Corporation
- Autonomous oil- and gas-bearing well killing device with fire-fighting function2 Apr 2026US 2026/0092507 A1
- Connection Device, Control Box Component and Fracturing Apparatus30 May 2024US 2024/0175342 A1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Sumps gas monitoring system21 Dec 2023US 2023/0410627 A1Saudi Arabian Oil Company
- Fracturing Device, Firefighting Method Thereof and Computer Readable Storage Medium6 Apr 2023US 2023/0107791 A1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
Most cited
By later US patents
- Fracturing device144US 11,143,006 B1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. · 2021
- Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus114US 5,890,549 A1999
- Emergency well-control vessel110US 4,336,843 AOdeco Engineers Inc. · 1982
- Fracturing device, firefighting method thereof and computer readable storage medium86US 11,506,039 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. · 2022
- Apparatus for controlling and preventing oil blowouts74US 4,323,118 A1982