- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 33/26 - OilsViscous liquidsPaintsInks
Patent holdings for IPC class G01N 33/26
Total number of patents in this class: 229
10-year publication summary
|
20
|
9
|
9
|
13
|
8
|
5
|
6
|
5
|
4
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Schlumberger Technology Corporation | 10848 |
8 |
| Schlumberger Canada Limited | 7357 |
7 |
| Saudi Arabian Oil Company | 13316 |
6 |
| Services Petroliers Schlumberger | 5823 |
6 |
| Schlumberger Technology B.v. | 5184 |
5 |
| Halliburton Energy Services, Inc. | 20937 |
5 |
| GM Global Technology Operations LLC | 15133 |
4 |
| Chevron U.S.A. Inc. | 3981 |
4 |
| The Lubrizol Corporation | 1293 |
4 |
| Qualitrol Company, LLC | 55 |
4 |
| Quest Diagnostics Investments Incorporated | 404 |
4 |
| Baker Hughes Incorporated | 5254 |
3 |
| 3m Innovative Properties Company | 17812 |
3 |
| Afton Chemical Corporation | 484 |
3 |
| Cidra Corporate Services, Inc. | 203 |
3 |
| SPECTRO Scientific, Inc. | 41 |
3 |
| Transportation IP Holdings, LLC | 933 |
3 |
| Schlumberger Holdings Limited | 2808 |
2 |
| ExxonMobil Research And Engineering Company | 2564 |
2 |
| Aktiebolaget SKF | 2970 |
2 |
| Other owners | 148 |