- 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 10/56 - Button-type inserts
Patent holdings for IPC class E21B 10/56
Total number of patents in this class: 324
10-year publication summary
35
|
44
|
31
|
29
|
38
|
16
|
16
|
10
|
10
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Baker Hughes Holdings LLC | 3060 |
37 |
Smith International, Inc. | 761 |
29 |
US Synthetic Corporation | 601 |
27 |
Baker Hughes Incorporated | 5689 |
26 |
Halliburton Energy Services, Inc. | 20165 |
16 |
Element Six Abrasives S.A. | 148 |
14 |
Element Six (UK) Limited | 178 |
12 |
Schlumberger Technology Corporation | 9690 |
11 |
National Oilwell DHT, L.P. | 159 |
11 |
Sandvik Intellectual Property AB | 1634 |
10 |
Schlumberger Canada Limited | 6913 |
7 |
Diamond Innovations, Inc. | 241 |
7 |
Epiroc Drilling Tools Aktiebolag | 89 |
7 |
Sandvik Mining and Construction Tools AB | 147 |
7 |
Schlumberger Technology B.v. | 4951 |
6 |
Element Six Limited | 123 |
6 |
Services Petroliers Schlumberger | 5426 |
6 |
Element Six GmbH | 99 |
5 |
Ulterra Drilling Technologies, L.P. | 124 |
5 |
Kennametal Inc. | 1380 |
4 |
Other owners | 71 |