US Patent No: 5,428,443

Number of patents in Portfolio can not be more than 2000

Laser diffraction-type particle size distribution measuring method and apparatus

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Abstract

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A particle-size distribution measuring apparatus and method is provided for suspending a sample containing particles in a fluid and introducing the suspended particles into a sample cell. The sample cell is illuminated with light from a laser source and the diffracted light from the particles is measured by an optical detector array. A computer circuit is capable of computing a plurality of graphs of particle-size distribution in repetitive measurement over a predetermined time period. A video display discloses the plurality of graphs in a juxtapositioned arrangement or stacked arrangement to enable the observer to distinguish between any variations in adjacent graphs.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HORIBA, LTD.KYOTO444

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kitamura, Hiroyuki Kyoto, JP 36 197
Togawa, Yoshiaki Kyoto, JP 45 271
Ukon, Juichiro Miyanohigashi-machi, JP 22 113

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HORIBA, LTD. (1)
5,305,072 Laser scattering particle-size distribution analyzer with improved sample container discharge 15 1992
 
OTSUKA ELECTRONICS CO., LTD. (1)
5,015,094 Particle size measuring system 11 1989
 
TOA MEDICAL ELECTRONICS CO., LTD. (1)
5,059,395 Particle analyzing apparatus 16 1988

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
AGGREDYNE, INC. (2)
8,289,514 Systems for measuring properties of a physiological fluid suspension 0 2009
8,559,007 Systems for measuring properties of a physiological fluid suspension 0 2012
 
MALVERN INSTRUMENTS LIMITED (2)
6,778,271 Measurement of particle size distribution 4 1999
6,800,251 Sample handling system 3 2001
 
HONEYWELL INTERNATIONAL INC. (1)
7,843,563 Light scattering and imaging optical system 0 2005
 
HORIBA, LTD. (1)
6,864,979 Particle size distribution measuring apparatus 2 2001
 
INFICON, INC. (1)
6,906,799 Signal processing method for in-situ, scanned-beam particle monitoring 1 2002
 
MILLIPORE CORPORATION (1)
6,643,018 Optical scattering monitor 1 2001
 
THROMBODYNE, INC. (1)
6,043,871 System and method for measuring blood platelet function 21 1998
 
Other [Check patent profile for assignment information] (1)
8,634,072 Methods and apparatus for determining characteristics of particles 0 2010

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