- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 11/00 - Other drilling tools
Patent holdings for IPC class E21B 11/00
Total number of patents in this class: 91
10-year publication summary
|
10
|
7
|
5
|
20
|
10
|
8
|
11
|
10
|
5
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21338 |
4 |
| Richard Goren Enterprises, LLC | 8 |
4 |
| Concore BV | 10 |
4 |
| Globe (Jiangsu) Co., Ltd. | 270 |
4 |
| Techtronic Cordless GP, Gainful Plan Trading Limited, an entity organized in the British Virgin Islands and TTI Finance Ltd., an entity organized in the British Virgin Islands | 1609 |
3 |
| Black & Decker, Inc. | 2446 |
2 |
| Makita Corporation | 2566 |
2 |
| Husqvarna AB | 3034 |
2 |
| R.n.p. Industries Inc. | 8 |
2 |
| Saudi Arabian Oil Company | 14235 |
2 |
| Scientific Drilling International, Inc. | 171 |
2 |
| Vermeer Manufacturing Company | 671 |
2 |
| A.W.C. Distributing, Inc. | 3 |
2 |
| Ocean Infinity Operations Pte. Ltd. | 3 |
2 |
| Baker Hughes Incorporated | 4934 |
1 |
| British Telecommunications Public Limited Company | 2601 |
1 |
| Enventure Global Technology, L.L.C. | 78 |
1 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48302 |
1 |
| Hilti Aktiengesellschaft | 3668 |
1 |
| Smith International, Inc. | 695 |
1 |
| Other owners | 48 |