- 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 7/30 - Enlarging drilled holes, e.g. by counterboring without earth removal
Patent holdings for IPC class E21B 7/30
Total number of patents in this class: 61
10-year publication summary
|
2
|
4
|
5
|
4
|
3
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5
|
3
|
3
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TT Technologies, Inc. | 150 |
14 |
| Merlin Technology, Inc. | 162 |
8 |
| Tracto-Technik GmbH & Co. KG | 170 |
7 |
| Bit Brokers International LTD | 6 |
3 |
| The Charles Machine Works, Inc. | 405 |
3 |
| Saudi Arabian Oil Company | 13349 |
3 |
| GE Infrastructure Technology, LLC | 6246 |
3 |
| CenturyLink Intellectual Property LLC | 1243 |
2 |
| Terra Sonic International, LLC | 36 |
2 |
| Schlumberger Canada Limited | 7363 |
1 |
| Schlumberger Technology B.v. | 5187 |
1 |
| Schlumberger Holdings Limited | 2808 |
1 |
| GDF Suez | 38 |
1 |
| Obelix Holdings Pty Ltd. | 3 |
1 |
| Prad Research and Development Limited | 2692 |
1 |
| Scandinavian No-dig Centre ApS | 1 |
1 |
| Services Petroliers Schlumberger | 5827 |
1 |
| T.i.c. Technology Innovation Consulting AG | 2 |
1 |
| Vermeer Manufacturing Company | 638 |
1 |
| Smart Reamer Drilling Systems Ltd | 2 |
1 |
| Other owners | 5 |