- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 8/48 - Density increasing or weighting additives
Patent holdings for IPC class C09K 8/48
Total number of patents in this class: 144
10-year publication summary
|
10
|
16
|
30
|
17
|
10
|
4
|
6
|
5
|
6
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 13206 |
44 |
| Halliburton Energy Services, Inc. | 20908 |
28 |
| Schlumberger Technology Corporation | 10745 |
7 |
| Schlumberger Canada Limited | 7298 |
5 |
| Schlumberger Technology B.v. | 5163 |
5 |
| Services Petroliers Schlumberger | 5788 |
5 |
| M-I L.L.C. | 808 |
4 |
| Baker Hughes Holdings LLC | 3005 |
4 |
| Schlumberger Holdings Limited | 2819 |
3 |
| Aramco Services Company | 3981 |
3 |
| Elkem AS | 61 |
3 |
| King Fahd University of Petroleum and Minerals | 1208 |
3 |
| Prad Research and Development Limited | 2693 |
3 |
| Forta, LLC | 57 |
3 |
| TURNER, Craig, Robert | 140 |
2 |
| Baker Hughes Incorporated | 5238 |
1 |
| Bromine Compounds Ltd. | 189 |
1 |
| Chevron Phillips Chemical Company LP | 1833 |
1 |
| China National Petroleum Corporation | 450 |
1 |
| Elkem ASA | 209 |
1 |
| Other owners | 17 |