Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Reexamination Certificate
2006-03-30
2010-12-07
Warden, Jill (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
C422S082060, C422S082070, C422S082080, C422S082090, C422S082110, C250S458100, C250S461100, C436S164000, C436S171000, C436S172000, C356S300000, C356S303000, C356S305000, C356S331000, C356S334000
Reexamination Certificate
active
07846390
ABSTRACT:
The apparatus for measuring concentrations of fuel mixtures using depth-resolved laser-induced fluorescence is a fluorometer equipped with a sample container holder that is movable in the path of the beam from the light source. Fluorescent emissions from the sample mixture pass at 90° to the excitation light path through a slit that is narrow enough that the emission intensity is effectively produced by a thin layer of the sample and focused on a monochromator, with successive thin layers receiving nonuniform excitation radiation due to reduction of intensity along the excitation light source path with increasing depth penetration and due to reabsorption of emitted fluorescence from adjacent layers. The method has a first mode in which the emission spectrum is scanned at a fixed depth, and a second mode in which the sample is moved relative to the emission monochromator slit to vary the depth while keeping the emission wavelength fixed.
REFERENCES:
patent: 4087685 (1978-05-01), Froot
patent: 4188120 (1980-02-01), McDonald
patent: 4350661 (1982-09-01), Davis
patent: 4365153 (1982-12-01), Seigel et al.
patent: 4759033 (1988-07-01), Ariessohn
patent: 4877966 (1989-10-01), Tomei
patent: 5049738 (1991-09-01), Gergely
patent: 5198871 (1993-03-01), Hill, Jr.
patent: 5424841 (1995-06-01), Van Gelder et al.
patent: 5656810 (1997-08-01), Alfano
patent: 5779978 (1998-07-01), Hartmann et al.
patent: 5859704 (1999-01-01), Fric
patent: 6124597 (2000-09-01), Shehada
patent: 6268603 (2001-07-01), Mullins
patent: 6272376 (2001-08-01), Marcu
patent: 6407383 (2002-06-01), Byatt
patent: 6633043 (2003-10-01), Hegazi
patent: 6636577 (2003-10-01), Clarke
patent: 2002/0030812 (2002-03-01), Ortyn et al.
patent: 2003/0021331 (2003-01-01), Balla
patent: 2003/0048831 (2003-03-01), Lemoine
patent: 2004/0089804 (2004-05-01), Dantus
patent: 2004/0199079 (2004-10-01), Chuck
patent: 2004/0239924 (2004-12-01), Couderc
patent: 2004/0262501 (2004-12-01), Kajii
patent: 2005/0000812 (2005-01-01), Couderc
patent: 6317512 (1994-11-01), None
patent: 9026357 (1997-01-01), None
patent: 2002303578 (2002-10-01), None
Patra, D. and Mishra, A.K., “Effect of sample geometry on synchronous fluorimetric analysis of petrol, diesel, kerosene and their mixtures at higher concentration,”Analyst, vol. 125 (2000), pp. 1383-1386.
Patra, D. and Mishra, A.K., “Excitation Emission Matrix Spectral Subtraction Fluorescence to Check Adulteration of Petrol by Kerosene,”Applied Spectroscopy, vol. 55, No. 3, (2001), pp. 338-342.
Hidrovo, C.H. and Hart, D.P. “Emission reabsorption laser induced fluorescence (ERLIF) film thickness measurement,”Measurement Science and Technology, vol. 12, 467-477 (2001).
King Fahd University of Petroleum and Minerals
Litman Richard C.
Turk Neil
Warden Jill
LandOfFree
Apparatus and method for measuring concentrations of fuel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for measuring concentrations of fuel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for measuring concentrations of fuel... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4227625