Optics: measuring and testing – For size of particles
Reexamination Certificate
2006-08-08
2006-08-08
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
For size of particles
C356S326000, C438S016000
Reexamination Certificate
active
07088446
ABSTRACT:
An opaque slurry chemical constituent measurement system includes a cross-flow or membrane filter having a porous filter element connected between a global slurry loop and a spectrometer. The opaque slurry particles cannot pass through the filter element but pass through the filter cartridge into the day tank, while the chemical constituent to be measured permeates through the filter element to the spectrometer, where it is measured, and thence to a reservoir. About once every five minutes the porous filter element is reverse flushed for less than a second to clear the filter pores. One to several times per hour, the reservoir is emptied into the day tank. The system provides essentially continuous measurement of the slurry chemical composition, does not consume reagent chemicals, does not create a chemical waste stream, and provides high reliability and low maintenance by preventing the abrasive slurry particles from contacting the fluidic sampling valves.
REFERENCES:
patent: 5563929 (1996-10-01), Connolly et al.
patent: 5710069 (1998-01-01), Farkas et al.
patent: 5993647 (1999-11-01), Huang et al.
patent: 6248474 (2001-06-01), Cerni et al.
patent: 6275290 (2001-08-01), Cerni et al.
patent: 6709311 (2004-03-01), Cerni
patent: 6943878 (2005-09-01), Fisher et al.
Lauchman Layla G.
Particle Measuring Systems, Inc.
Patton & Boggs LLP
LandOfFree
Optical measurement of the chemical constituents of an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical measurement of the chemical constituents of an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical measurement of the chemical constituents of an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3673616