David Kratochvil — 6 Patents at Geosource

David Kratochvil has been granted 6 US patents while listed as an inventor at Geosource. The first was granted in 1981 and the most recent in May 2018. David Kratochvil ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list David Kratochvil in Vancouver, BC, CA.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
9963360	Removal of dissolved selenium from aqueous solutions	Farzad Mohammadi, Patrick Littlejohn, David Sanguinetti	2018-05-08
9085779	Processes for producing h2s using sulphur-reducing bacteria	Maxmillian Nodwell, Michael Bratty	2015-07-21
8840793	Selective sulphate removal by exclusive anion exchange from hard water waste streams	Michael Bratty	2014-09-23
8747678	Nickel sulphide precipitation process	Michael Bratty, Rick Eugene LAWRENCE	2014-06-10
4519052	Electronic roll-a-long switch	Donnie J. Tantillo, Robert Moore, Edward M. Browne	1985-05-21
4307790	Weight-drop seismic exploration system	Tawassul Ali Khan	1981-12-29	$4,651,000

David Kratochvil — 6 Patents

Issued Patents All Time

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