Chemistry: analytical and immunological testing – Lubricant – grease – mineral oil – hydrocarbon oil product – or...
Reexamination Certificate
2007-07-10
2007-07-10
Gakh, Yelena G. (Department: 1743)
Chemistry: analytical and immunological testing
Lubricant, grease, mineral oil, hydrocarbon oil product, or...
C436S164000, C436S170000
Reexamination Certificate
active
10274070
ABSTRACT:
A method for determining contamination in marine diesel lubricating oils. The method has been found to have particular utility in estimating residual fuel and insolubles contamination in marine diesel lubricating oils. The method includes the steps of: (a) obtaining spectral raw data over a frequency range substantially equivalent to that of ultraviolet-viable light for reference lubricating oil samples with known properties and concentrations of residual fuel and insolubles; (b) performing chemometric techniques to the spectral raw data obtained in step (a) to develop a calibration model and calibrate the spectral data with actual values for parameters reflecting the level of residual fuel and insolubles contamination of the reference samples, the actual values determined by means of conventional analytical methods; (c) obtaining spectra of samples of marine diesel lubricating oil of unknown concentration of residual fuel and insolubles over a frequency range substantially equivalent to that of ultraviolet-viable light; and (d) processing the obtained spectral raw data of step (c) and applying the developed calibration model to the processed data in order to determine the parameters reflecting the level of residual fuel contaminants and insolubles present in the marine diesel lubricating oil.
REFERENCES:
patent: 5049738 (1991-09-01), Gergely et al.
patent: 5304807 (1994-04-01), Lin
patent: 5672873 (1997-09-01), Yamazoe
patent: 5856870 (1999-01-01), Curtiss
patent: 11194124 (1999-07-01), None
Stellam et al. “Monitoring the degradation of a synthetic lubricant oil using infrared absorption, fluorescnece emission and multivariate analysis: a fisible study”, Lubrication Engineering, 1999, v. 55, No. 10, pp. 42-52.
Nagase et al. JP 11194124 A, Jul. 1999, computer translation.
Zerlia et al. “Asphaltene determination in heavy petroleum products by partial least squares analysis of UV data”, Fuel 1992, v. 71, pp. 559-563.
B. Edmonds et al. “Measurement and prediction of asphaltene precipitation from live oils”, ISCOP'99, Mexico, Nov. 1999; www.infochemuk.com/publicat/aprecip8.pdf.
Thoery of UV spectrum of UV-Vis spectroscopy, 2003, http://www.chem.ucla.edu/˜bacher/General/30BL/tips/UV-VIS.html.
Florence et al. “Applications of ATR UV/Vis spectroscopy in physical form characterization of pharmaceuticals” www.spectroscopyeurope.com, Nov. 2004.
“ATR Probes”, http://www.hellma-worldwide.de/doc—pool/en/Web—ATR—Probes.pdf.
Jalkian Rafi
Reischman Paul Thomas
ExxonMobil Research and Engineering Company
Foss Norky L.
Gakh Yelena G.
Katz Gary P.
LandOfFree
Method for determining residual fuel and insolubles... 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 for determining residual fuel and insolubles..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining residual fuel and insolubles... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3776237