Inventor
DEFREEZ RICHARD K
US16 patents
⚠️ This page may combine multiple inventors who share the name “DEFREEZ RICHARD K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PACIFIC SCIENT INSTR COMPANY
6 patentsUS6016194AJan 18, 2000
Particles counting apparatus and method having improved particle sizing resolution
PACIFIC SCIENT INSTR COMPANY65 citations95
US6137572AOct 24, 2000
High sensitivity optical fluid-borne particle detection
PACIFIC SCIENT INSTR COMPANY57 citations94
US6784990B1Aug 31, 2004
Particle detection system implemented with a mirrored optical system
PACIFIC SCIENT INSTR COMPANY35 citations92
US6061132AMay 9, 2000
Dual detector array with noise cancellation for a particle size detection device
PACIFIC SCIENT INSTR COMPANY41 citations92
US6111642AAug 29, 2000
Flow apertured intracavity laser particle detector
PACIFIC SCIENT INSTR COMPANY32 citations91
US5946092AAug 31, 1999
Dual laser heterodyne optical particle detection technique
PACIFIC SCIENT INSTR COMPANY46 citations91
MET ONE INC
4 patentsUS5642193AJun 24, 1997
Particle counter employing a solid-state laser with an intracavity view volume
MET ONE INC42 citations95
US5864399AJan 26, 1999
Method for counting particles in a fluent stream
MET ONE INC36 citations92
US5946093AAug 31, 1999
Particle detection system and method employing an upconversion laser
MET ONE INC45 citations89
US5903347AMay 11, 1999
Particle counter employing a chromium based solid-state laser with an intracavity view volume
MET ONE INC11 citations73