Optics: measuring and testing – For size of particles – By particle light scattering
Reexamination Certificate
2011-07-19
2011-07-19
Stafira, Michael P (Department: 2886)
Optics: measuring and testing
For size of particles
By particle light scattering
Reexamination Certificate
active
07982874
ABSTRACT:
A method of measuring sizes of particles suspended in a liquid using optical mixing spectroscopy of scattered light and an apparatus for implementing the method are disclosed. The method involves making measurements by a fiber optic probe introduced into a medium under investigation, the probe including several multiple or single mode optical fibers. One of the optical fibers transmits light into the medium, while the other optical fibers transmits scattered light to a device for providing spatial coherence of the light and then to a light detector. Auxiliary optical fibers are used to determine the relationship between spectral line widths of multiple and single light scattering when measurements are conducted in very turbid media and for determining particle sizes from multiple rather than single scattering spectrum.
REFERENCES:
patent: 4975237 (1990-12-01), Watling
patent: 4983040 (1991-01-01), Chu et al.
patent: 5155549 (1992-10-01), Dhadwal
patent: 5402508 (1995-03-01), O'Rourke et al.
patent: 5646597 (1997-07-01), Hamburger et al.
patent: 5693944 (1997-12-01), Rich
patent: 5815611 (1998-09-01), Dhadwal
patent: 5818583 (1998-10-01), Sevick-Muraca et al.
patent: 5822072 (1998-10-01), Dai et al.
patent: 5973779 (1999-10-01), Ansari et al.
patent: 6016195 (2000-01-01), Peters
patent: 6469787 (2002-10-01), Meyer et al.
patent: 6519032 (2003-02-01), Kuebler et al.
patent: 6819420 (2004-11-01), Kuebler et al.
patent: 6958816 (2005-10-01), Dogariu et al.
patent: 7187441 (2007-03-01), Sevick-Muraca et al.
patent: 7236250 (2007-06-01), Iwai et al.
patent: 19725211 (1998-06-01), None
patent: 220265 (1990-01-01), None
patent: 2306970 (2006-12-01), None
Photon Correlation and Light Beat Spectroscopy. Ed. by H. Z. Cummins, E.R. Pike, Plenum Press, New York—London, 1974. Translation. Ed. by G. Cumming and E. Pike, Mir, Moscow, 1978.
In-Line Particle Size Measurements for Cement and Other Abrasive Process Environments, by A.P. Malcolmson, J.J. Holve. Proc. of IEEE/PCA 40th Cement Industry Technical Conference, Rapid City, South Dakota, 1998.
Great Britain Patent Office Search Report, dated Nov. 24, 1998 for Appln. No. GB9818345.2.
Chaikov Leonid Leonidovich
Kovalenko Konstantin Vasilievich
Krivokhizha Svetlana Vladimirovna
Akanbi Isiaka O
Amster Rothstein & Ebenstein LLP
P.N. Lebedev Physicial Institute of The Russian Academy of Scien
Stafira Michael P
LandOfFree
Method and apparatus for measuring particle sizes in a... 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 and apparatus for measuring particle sizes in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring particle sizes in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2740090