Method of and apparatus for in-situ measurement of degradation of automotive fluids and the like by micro-electron spin resonance (ESR) spectrometry
US8829904B2 · kind B2 · utility
8Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of and miniaturized apparatus adapted for in-situ measurement of degradation of automotive fluids and the like by micro-electron spin resonance (ESR) spectrometry, wherein the use of a modulated constant magnetic field in an RF resonating variable frequency microwave cavity resonator through which a fluid sample is passed, enables direct detection of molecular changes in such fluid sample resulting from fluid degradation during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.