- 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: 725
10-year publication summary
|
94
|
52
|
45
|
61
|
58
|
38
|
43
|
21
|
21
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20908 |
137 |
| Baker Hughes Holdings LLC | 3005 |
76 |
| Smith International, Inc. | 717 |
75 |
| Baker Hughes Incorporated | 5238 |
67 |
| Schlumberger Technology Corporation | 10745 |
38 |
| Ulterra Drilling Technologies, L.P. | 124 |
36 |
| US Synthetic Corporation | 624 |
18 |
| Baker Hughes, a GE Company, LLC | 2112 |
17 |
| Baker Hughes Oilfield Operations, LLC | 2313 |
13 |
| Schlumberger Canada Limited | 7298 |
12 |
| National Oilwell DHT, L.P. | 129 |
12 |
| Schlumberger Technology B.v. | 5163 |
10 |
| Services Petroliers Schlumberger | 5788 |
10 |
| CNPC USA Corp. | 157 |
7 |
| National Oilwell Varco, L.P. | 1669 |
7 |
| Varel International Ind., L.P. | 69 |
7 |
| Chevron U.S.A. Inc. | 3966 |
6 |
| Southwest Petroleum University | 471 |
6 |
| Varel International Ind., LLC | 44 |
6 |
| Saudi Arabian Oil Company | 13206 |
5 |
| Other owners | 160 |