RD

Richard K. DeFreez

PI Pacific Scientific Instruments: 6 patents #1 of 9Top 15%
EI Electro Scientific Industries: 5 patents #48 of 314Top 20%
MO Met One: 4 patents #2 of 9Top 25%
OC Oregon Graduate Center: 3 patents #2 of 26Top 8%
HA Hach Ultra Analytics: 3 patents #1 of 8Top 15%
MI Met One Instruments: 2 patents #3 of 6Top 50%
BS Bethlehem Steel: 1 patents #116 of 326Top 40%
📍 Azalea, OR: #1 of 1 inventorsTop 100%
🗺 Oregon: #1,732 of 28,073 inventorsTop 7%
Overall (All Time): #175,156 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
10365199 Twin-spot light absorbing particulate monitoring instrument Michael A. Potter, Thomas L. Pottberg 2019-07-30
8284398 Nephelometer with concentration-modulated sample flow Michael A. Potter, Thomas L. Pottberg 2012-10-09
7659523 Integrated assembly for delivery of air stream for optical analysis Bret Warrick, Geoffrey Wilson, Michael M. Carrabba 2010-02-09
7355706 Particle detection system implemented with an immersed optical system Kenneth L. Girvin, James Brady 2008-04-08
7173257 Integrated assembly for delivery of air stream for optical analysis Bret Warrick, Geoffrey Wilson, Michael M. Carrabba 2007-02-06
6784990 Particle detection system implemented with a mirrored optical system James Brady, Kenneth L. Girvin 2004-08-31
6137572 High sensitivity optical fluid-borne particle detection Kenneth L. Girvin, Mingguang Li 2000-10-24
6111642 Flow apertured intracavity laser particle detector Kenneth L. Girvin, Frederic Schildmeyer 2000-08-29
6061132 Dual detector array with noise cancellation for a particle size detection device Kenneth L. Girvin 2000-05-09
6016194 Particles counting apparatus and method having improved particle sizing resolution Kenneth L. Girvin 2000-01-18
5946092 Dual laser heterodyne optical particle detection technique Kenneth L. Girvin, Mingguang Li 1999-08-31
5946093 Particle detection system and method employing an upconversion laser Valey Kamalov 1999-08-31
5903347 Particle counter employing a chromium based solid-state laser with an intracavity view volume Kenneth L. Girvin 1999-05-11
5864399 Method for counting particles in a fluent stream Kenneth L. Girvin 1999-01-26
5642193 Particle counter employing a solid-state laser with an intracavity view volume Kenneth L. Girvin 1997-06-24
5590141 Method and apparatus for generating and employing a high density of excited ions in a lasant Brian W. Baird, Yunlong Sun 1996-12-31
5559824 Optical frequency-converting medium pumped by unstable resonator semiconductor laser Brian W. Baird 1996-09-24
5323414 Laser system and method employing a nonimaging concentrator Brian W. Baird, Yunlong Sun 1994-06-21
5317447 High-power, compact, diode-pumped, tunable laser Brian W. Baird 1994-05-31
5260963 Method and apparatus for efficient operationof a solid-state laser optically pumped by an unstable resonator semiconductor laser Brian W. Baird 1993-11-09
4797892 Longitudinally coupled surface emitting semiconductor laser array Richard A. Elliott, Joseph Puretz 1989-01-10
4796269 Two-dimensional phase-locked surface emitting semiconductor laser array Richard A. Elliott, Joseph Puretz 1989-01-03
4698129 Focused ion beam micromachining of optical surfaces in materials Joseph Puretz, Jonathan H. Orloff, Richard A. Elliott 1987-10-06
4362388 Remote measurement of concentration of a gas specie by resonance absorption Walter D. Egan, Roger T. Boos, Robert L. Byer 1982-12-07