- 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: 157
10-year publication summary
|
14
|
21
|
15
|
12
|
15
|
12
|
16
|
14
|
6
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ExxonMobil Research And Engineering Company | 2830 |
7 |
| Hitachi, Ltd. | 16452 |
5 |
| Schaeffler Technologies AG & Co. KG | 8880 |
5 |
| NSK Ltd. | 2719 |
5 |
| Aktiebolaget SKF | 2700 |
5 |
| Halliburton Energy Services, Inc. | 20165 |
4 |
| Idemitsu Kosan Co., Ltd. | 3995 |
4 |
| Afton Chemical Corporation | 468 |
4 |
| Total Marketing Services | 487 |
4 |
| Caterpillar Inc. | 8877 |
3 |
| NTN Corporation | 5008 |
3 |
| Danfoss (Tianjin) Ltd. | 83 |
3 |
| Luneta, LLC | 15 |
3 |
| PCS Instruments Limited | 28 |
3 |
| Saudi Arabian Oil Company | 11322 |
3 |
| Sikorsky Aircraft Corporation | 1150 |
3 |
| Southwest Research Institute | 791 |
3 |
| LogiLube, LLC | 8 |
3 |
| SPM Oil & Gas Inc. | 304 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Other owners | 82 |