- 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: 174
10-year publication summary
|
14
|
12
|
15
|
12
|
15
|
13
|
6
|
10
|
12
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15745 |
9 |
| NSK Ltd. | 2817 |
7 |
| ExxonMobil Research And Engineering Company | 2519 |
6 |
| Schaeffler Technologies AG & Co. KG | 10418 |
5 |
| Idemitsu Kosan Co., Ltd. | 4226 |
5 |
| Aktiebolaget SKF | 3025 |
5 |
| Halliburton Energy Services, Inc. | 21122 |
4 |
| Afton Chemical Corporation | 488 |
4 |
| PCS Instruments Limited | 39 |
4 |
| Total Marketing Services | 450 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8931 |
3 |
| Caterpillar Inc. | 9864 |
3 |
| NTN Corporation | 4952 |
3 |
| Danfoss (Tianjin) Ltd. | 99 |
3 |
| Luneta, LLC | 15 |
3 |
| Saudi Arabian Oil Company | 13708 |
3 |
| Sikorsky Aircraft Corporation | 1091 |
3 |
| Southwest Research Institute | 737 |
3 |
| LogiLube, LLC | 11 |
3 |
| SPM Oil & Gas Inc. | 343 |
3 |
| Other owners | 91 |