- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 33/30 - Oils for lubricating properties
Patent holdings for IPC class G01N 33/30
Total number of patents in this class: 170
10-year publication summary
|
21
|
14
|
12
|
15
|
12
|
15
|
13
|
6
|
10
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15605 |
7 |
| NSK Ltd. | 2799 |
7 |
| ExxonMobil Research And Engineering Company | 2562 |
6 |
| Schaeffler Technologies AG & Co. KG | 10056 |
5 |
| Idemitsu Kosan Co., Ltd. | 4239 |
5 |
| Aktiebolaget SKF | 2999 |
5 |
| Halliburton Energy Services, Inc. | 20991 |
4 |
| Afton Chemical Corporation | 487 |
4 |
| PCS Instruments Limited | 35 |
4 |
| Total Marketing Services | 453 |
4 |
| Caterpillar Inc. | 9659 |
3 |
| NTN Corporation | 4979 |
3 |
| Danfoss (Tianjin) Ltd. | 98 |
3 |
| Luneta, LLC | 15 |
3 |
| Saudi Arabian Oil Company | 13442 |
3 |
| Sikorsky Aircraft Corporation | 1097 |
3 |
| Southwest Research Institute | 740 |
3 |
| LogiLube, LLC | 10 |
3 |
| SPM Oil & Gas Inc. | 332 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8823 |
2 |
| Other owners | 90 |