Inventor
HOGG WALTER R
36 patents
⚠️ This page may combine multiple inventors who share the name “HOGG WALTER R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
COULTER ELECTRONICS
35 patentsUS4341471AJul 27, 1982
Apparatus and method for measuring the distribution of radiant energy produced in particle investigating systems
COULTER ELECTRONICS94 citations96
US4273443AJun 16, 1981
Method and apparatus for measurement of reradiation in particle flow cell systems
COULTER ELECTRONICS71 citations96
US4189236AFeb 19, 1980
Ellipsoid-conic radiation collector and method
COULTER ELECTRONICS97 citations96
US4009435AFeb 22, 1977
Apparatus for preservation and identification of particles analyzed by flow-through apparatus
COULTER ELECTRONICS73 citations96
US3982182ASep 21, 1976
Conductivity cell for particle study device
COULTER ELECTRONICS76 citations96
US3973196AAug 3, 1976
Method and apparatus for ejecting a metered amount of particulate sample
COULTER ELECTRONICS66 citations96
US3963606AJun 15, 1976
Semi-automatic adjusting delay for an electronic particle separator
COULTER ELECTRONICS105 citations96
US3944917AMar 16, 1976
Electrical sensing circuitry for particle analyzing device
COULTER ELECTRONICS81 citations95
US4395676AJul 26, 1983
Focused aperture module
COULTER ELECTRONICS85 citations94
US4523841AJun 18, 1985
Radiant energy reradiating flow cell system and method
COULTER ELECTRONICS54 citations92
US4286876ASep 1, 1981
Apparatus and method for measuring scattering of light in particle detection systems
COULTER ELECTRONICS30 citations92
US4199686AApr 22, 1980
Dark field illuminator and collector apparatus and method
COULTER ELECTRONICS37 citations92
US4188543AFeb 12, 1980
Ellipsoid radiation collector apparatus and method
COULTER ELECTRONICS51 citations92
US4188542AFeb 12, 1980
Mirror image ellipsoid radiation collector and method
COULTER ELECTRONICS29 citations82
US3987391AOct 19, 1976
Method and apparatus for correcting total particle volume error due to particle coincidence
COULTER ELECTRONICS30 citations82
US4341993AJul 27, 1982
Reflector optics with impedance sensing orifice
COULTER ELECTRONICS22 citations81
US4009443AFeb 22, 1977
Method and apparatus for providing primary coincidence correction during particle analysis utilizing time generation techniques
COULTER ELECTRONICS22 citations78
US4438390AMar 20, 1984
Tandem sensing zones for improved signal-to-noise ratio in particle analyzer
COULTER ELECTRONICS17 citations74
US4184766AJan 22, 1980
Method and apparatus for correlating measurements of tandem sensing zones
COULTER ELECTRONICS16 citations74
US4019134AApr 19, 1977
Particle detector independent of errors caused by changes of electrolyte conductivity and electrode polarization
COULTER ELECTRONICS15 citations74
US3988128AOct 26, 1976
Electric particle precipitator
COULTER ELECTRONICS18 citations74
US3963983AJun 15, 1976
Pulse amplitude discriminating circuit
COULTER ELECTRONICS13 citations74
US3949198AApr 6, 1976
Methods and apparatuses for correcting coincidence count inaccuracies in a coulter type of particle analyzer
COULTER ELECTRONICS16 citations74
US3944797AMar 16, 1976
Method and apparatus for determining the correct percentiles of the size distribution of a particulate system
COULTER ELECTRONICS12 citations74
US3939409AFeb 17, 1976
Particle study device and sample metering means used therein
COULTER ELECTRONICS13 citations74
US3936739AFeb 3, 1976
Method and apparatus for generating error corrected signals
COULTER ELECTRONICS11 citations74
US3936740AFeb 3, 1976
Method and apparatus for automatically sampling pulses a predetermined average number of times for storage and subsequent reproduction
COULTER ELECTRONICS11 citations74
US3936741AFeb 3, 1976
Method and apparatus for providing primary coincidence correction during particle analysis utilizing time generation techniques
COULTER ELECTRONICS14 citations70
US4730155AMar 8, 1988
Sampling valve including sample ejection means
COULTER ELECTRONICS6 citations63
US4361803ANov 30, 1982
Apparatus for recirculating sweep flow electrolyte without a pump
COULTER ELECTRONICS4 citations63
US3973108AAug 3, 1976
Pulse storing and retrieval circuit
COULTER ELECTRONICS2 citations63
US3968429AJul 6, 1976
Particle analyzer of the Coulter type including coincidence error correction circuitry
COULTER ELECTRONICS5 citations63
US3940691AFeb 24, 1976
Particle analyzer of the coulter type including coincidence error correction circuitry
COULTER ELECTRONICS5 citations63
US3936666AFeb 3, 1976
Apparatus for measuring a particle size dividing one of the mass or particle number of a particulate system into predetermined fractions
COULTER ELECTRONICS6 citations60
US4077749AMar 7, 1978
Sample ejection system including temperature control
COULTER ELECTRONICS1 citations52