- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 35/00 - Methods or apparatus for preventing or extinguishing fires
Patent holdings for IPC class E21B 35/00
Total number of patents in this class: 36
10-year publication summary
|
5
|
5
|
3
|
3
|
4
|
3
|
3
|
5
|
5
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 396 |
9 |
| Saudi Arabian Oil Company | 11322 |
5 |
| Aramco Services Company | 3504 |
2 |
| Rigdeluge Global Limited | 13 |
2 |
| Equinor Energy AS | 475 |
2 |
| Ravdos Holdings Inc. | 50 |
2 |
| Well Equipment Solutions Holdings Pty Ltd | 2 |
2 |
| Aker Solutions AS | 226 |
1 |
| Australian Rig Construction Holdings Pty Ltd | 8 |
1 |
| EOG Resources, Inc. | 70 |
1 |
| Foret Plasma Labs, LLC | 85 |
1 |
| Jack Protection, LLC | 1 |
1 |
| Lancer Systems L.P. | 12 |
1 |
| Linde Aktiengesellschaft | 1600 |
1 |
| Steamex Group AB | 3 |
1 |
| Joy Global Surface Mining Inc | 356 |
1 |
| Firesafe Energy AS | 1 |
1 |
| Hytor A/S | 1 |
1 |
| Novinium, LLC | 106 |
1 |
| Other owners | 0 |