Method of and apparatus for in-situ measurement of degradation of automotive fluids and the like by micro-electron spin resonance (ESR) spectrometry
US8125224B2 · kind B2 · utility
14Cited by
7References
3Claims
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Key dates
| Filing date | Dec 9, 2008 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Jun 29, 2029 |
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.