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Egbert deVries — 11 Patents

QTQuad Environmental Technologies: 8 patents #1 of 2Top 50%
Kettering, OH: #29 of 471 inventorsTop 7%
Ohio: #7,244 of 73,341 inventorsTop 10%
Overall (All Time): #435,149 of 4,157,543Top 15%
11 Patents All Time
Egbert deVries has been granted 11 US patents while listed as an inventor at Quad Environmental Technologies. The first was granted in 1980 and the most recent in July 1989. Egbert deVries ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list Egbert deVries in Kettering, OH, US.

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