ED

Egbert deVries

QT Quad Environmental Technologies: 8 patents #1 of 2Top 50%
📍 Kettering, OH: #29 of 471 inventorsTop 7%
🗺 Ohio: #7,178 of 73,341 inventorsTop 10%
Overall (All Time): #475,168 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
4844874 Method and means for controlling mist scrubber operation 1989-07-04
4457214 Refrigerated structure 1984-07-03
4416861 Two stage odor control system 1983-11-22
4378851 Method for inhibiting explosions 1983-04-05
4308040 Apparatus for neutralizing odors Harold J. Rafson 1981-12-29
4308241 Formation of reactive droplet dispersion 1981-12-29
4302226 Apparatus for neutralizing odors Harold J. Rafson 1981-11-24
4284609 Condensation cleaning of particulate laden gases 1981-08-18
4238461 Removal of odors from gas streams 1980-12-09
4225566 Process for performing multiple chemical reactions 1980-09-30
4206870 Pressure relief valve 1980-06-10