Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2005-04-19
2005-04-19
Rosenberger, Richard A. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
C356S432000, C356S040000
Reexamination Certificate
active
06882425
ABSTRACT:
A quality test of fluids of biological origin can be performed optically with applying a suitable evaluation method. In case of two components to be determined in a such fluid, an extinction spectrum is approximated in a first wavelength range by a combination of a merely theoretical curve and the spectrum of the pure first substance in a first wavelength range, and this evaluation is repeated in a second wavelength range this time by approximating the measured spectrum (62) by a combination of a hypothetical curve, the spectrum (64) of the first component with the already determined concentration, and the spectrum (65) of the pure second component. Furthermore, it is feasible to subtract the first and second spectrum and analyze the so obtained differential spectrum (66) in view of anomalies. The hypothetical curves are preferably straight lines which are defined by slope and ordinate section. In the praxis of the quality test of blood, bilirubin and hemoglobin may be quantitatively be determined, whilst the background together with the lipid component can be qualitatively examined by means of the differential spectrum.
REFERENCES:
patent: 4267572 (1981-05-01), Witte
patent: 4677079 (1987-06-01), Langhals
patent: 5137023 (1992-08-01), Mendelson et al.
patent: 5424840 (1995-06-01), Moore et al.
patent: 5573952 (1996-11-01), Moessner
patent: 4433827 (1996-03-01), None
patent: 0 562 800 (1993-09-01), None
patent: 0 915 338 (1999-05-01), None
patent: 4263512 (1981-04-01), None
patent: WO 91 04470 (1991-04-01), None
patent: WO 9719340 (1997-05-01), None
Elsenhans Olivier
Sarofim Emad
Schnell Urban Georg
Nguyen Sang H.
Roche Diagnostics Corporation
Rosenberger Richard A.
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