Electricity: measuring and testing – Particle precession resonance – Using an electron resonance spectrometer system
Reexamination Certificate
2011-01-11
2011-01-11
Arana, Louis M (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using an electron resonance spectrometer system
Reexamination Certificate
active
07868616
ABSTRACT:
A miniaturized instrument and method of using electron spin resonance spectrometry for measuring the degradation of lubricating fluids, and the like, that includes continuously passing a sample of such fluid through a resonating RF microwave cavity resonator during the application therethrough of a uniform slowly varying uniform magnetic field that is rapidly modulated and measuring the resulting phase modulation or amplitude modulation thereof to derive an electron spin resonance signal that directly senses the molecular changes in the fluid sample resulting from fluid degradation during operation of the vehicle, such as peroxy radicals in vehicle engine oil and the like.
REFERENCES:
patent: 3140993 (1964-07-01), Roberts
patent: 4360776 (1982-11-01), Bauman
patent: 4593248 (1986-06-01), Hyde et al.
patent: 5233303 (1993-08-01), Bales et al.
patent: 5465047 (1995-11-01), Nakanishi et al.
patent: 7260930 (2007-08-01), Decou et al.
patent: 7589529 (2009-09-01), White et al.
patent: 2003/0155916 (2003-08-01), Maier et al.
patent: 2007/0024289 (2007-02-01), Knitt et al.
patent: 198 34 939 (2000-02-01), None
patent: 2002 062271 (2002-02-01), None
J. R. White, et al., “Octave-Tunable Miniature RF Resonators,” IEEE Microwave and Wireless Components Letters, Vo. 15, No. 11, Nov. 2005.
PCT International Search Report and the Written Opinion of the International Searching Authority for PCT/IB2006/003174.
Chzhan, M., et al., “A Tunable Reentrant Resonator with Transverse Orientation of Electric Field forin VivoEPR Spectroscopy,” Journal of Magnetic Resonance, Academic Press, Orlado, FL, US, vol. 137, No. 2, Apr. 1, 1999, pp. 373-378.
White, J., “Micro-ESR for Airborne Soot Measurement,” 2008 Diesel Engine-Efficiency and Emissions Research (DEER) Conference Presentations, [online] Aug. 4, 2008, Dearborn, Michigan, Retrieved from the Internet: http://www1.eere.energy.gov/vehiclesandfuels/resources/proceedings/2008—deer—presentations.html [retrieved Nov. 25, 2008].
White Christopher
White James
Active Spectrum, Inc.
Arana Louis M
Risso Marcus
Tope-McKay & Associates
LandOfFree
Method of and apparatus for in-situ measurement of changes... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for in-situ measurement of changes..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for in-situ measurement of changes... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2685328