Grease evaluation
US11686719B2 · kind B2 · utility
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1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Sep 22, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/0208
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of evaluating viscous compositions are disclosed. The methods may be used to evaluate degradation levels of lubricants including grease. The methods may include preparing a surface for testing by leveling and flattening a viscous composition, placing a drop of a liquid on the flattened leveled surface, evaluating the observed contact angle between the drop and the surface, and then comparing the observed contact angle to a reference contact angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.