- 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 10/43 - Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
Patent holdings for IPC class E21B 10/43
Total number of patents in this class: 752
10-year publication summary
|
52
|
45
|
61
|
58
|
38
|
44
|
20
|
22
|
19
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21230 |
138 |
| Baker Hughes Holdings LLC | 2991 |
76 |
| Smith International, Inc. | 700 |
74 |
| Baker Hughes Incorporated | 5038 |
64 |
| Schlumberger Technology Corporation | 11522 |
44 |
| Ulterra Drilling Technologies, L.P. | 131 |
38 |
| Baker Hughes, a GE Company, LLC | 2093 |
17 |
| Schlumberger Canada Limited | 7564 |
14 |
| Baker Hughes Oilfield Operations, LLC | 2464 |
14 |
| Schlumberger Technology B.v. | 5269 |
12 |
| National Oilwell DHT, L.P. | 120 |
12 |
| Services Petroliers Schlumberger | 5979 |
12 |
| US Synthetic Corporation | 618 |
12 |
| Grant Prideco, Inc. | 429 |
9 |
| CNPC USA Corp. | 171 |
7 |
| National Oilwell Varco, L.P. | 1690 |
7 |
| Southwest Petroleum University | 508 |
7 |
| Varel International Ind., L.P. | 69 |
7 |
| Chevron U.S.A. Inc. | 4094 |
6 |
| Varel International Ind., LLC | 44 |
6 |
| Other owners | 176 |