Optics: measuring and testing – By shade or color – With color transmitting filter
Reexamination Certificate
2007-12-04
2007-12-04
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By shade or color
With color transmitting filter
Reexamination Certificate
active
11456292
ABSTRACT:
Highly portable, handheld instrument which can be pointed at the produce to be checked. Light from a source within the instrument is directed onto the produce to induce fluorescent emission from the produce, and fluorescent emissions from the produce are monitored with a detector within the instrument to detect the presence of pesticide residue on the produce. The light from the source is filtered to selectively pass light of a wavelength which induces maximum fluorescent emission from the pesticide to be detected, and the emissions from the produce are filtered to selectively pass emissions having a spectral content characteristic of the pesticide to be detected.
REFERENCES:
patent: 4650336 (1987-03-01), Moll
patent: 4666672 (1987-05-01), Miller
patent: 4771006 (1988-09-01), Miller
patent: 5166813 (1992-11-01), Metz
patent: 5846753 (1998-12-01), Akkara
patent: 5994707 (1999-11-01), Mendoza
patent: 6052187 (2000-04-01), Krishnan et al.
patent: 6201989 (2001-03-01), Whitehead et al.
patent: 6343168 (2002-01-01), Murphy
patent: 6571118 (2003-05-01), Utzinger
patent: 6792395 (2004-09-01), Roberts
patent: 2003/0048445 (2003-03-01), Tokhtuev et al.
patent: 2003/0160182 (2003-08-01), Petrich et al.
patent: 2003/0206301 (2003-11-01), Cline et al.
patent: 2004/0199079 (2004-10-01), Chuck et al.
patent: 2005/0030533 (2005-02-01), Treado
patent: 2006/0208171 (2006-09-01), Holland
Booksh, Excitation Emission Matrix Fluorescence, Booksh Group Home Page, Arizona State University, www.public.asu.edu/booksh/eem.htm, Jan. 14, 2005.
C & L Instruments, Inc., Optics of a Fluorescence Microscope, www.fluorescence.com/tutorial/fm-optic.htm, no date.
Freudenrich, Fluorescence Microscopy, How Light Microscopes Work, www.science.howstuffworks.com/light-microscope4.htm, no date.
Jiji et al., Excitation-Emission Matrix Fluorescence based Determination of Carbamate Pesticides and Polycyclic Aromatic Hydrocarbons, Analytica Chimica Acta 397, 1999, 61-72.
Jiji et al., Application of PARAFAC for Calibration with Excitation-Emission Matrix Fluorescence Spectra of Three Classes of Environmental Pollutants, Journal of Chemometrics, 2000, 171-185.
Berman Herbert L
Sadeghi Darius Akbar
Bio-Chek LLC
Geisel Kara E
Toatley , Jr. Gregory J.
Wright Edward S.
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