Inventor · disambiguated record
Donald R. Clark
Also filed as: CLARK DONALD · CLARK DONALD R · CLARK DONALD ROBERT
7 granted patents·61 citations·filing 1979–2023
81Inventor score
Files withOSTARA NUTRIENT RECOVERY TECH INC3AMP INC1CARGILL INC1CORONA CLIPPER INC1OSTARA NUTRIENT RECOVERY TECHNOLOGIES INC1
Top patents by PatentIndex Score
7 records- 0187US10513470B2Slow and fast release fertilizer composition and methods for making sameOSTARA NUTRIENT RECOVERY TECH INC·Filed 2017·Granted Dec 24, 2019·4 cites·26 claims
- 0284US9878960B2Slow and fast release fertilizer composition and methods for making sameOSTARA NUTRIENT RECOVERY TECH INC·Filed 2014·Granted Jan 30, 2018·5 cites·52 claims
- 0384US4255009ATwo row electrical connectorAMP INC·Filed 1979·Granted Mar 10, 1981·47 cites·8 claims
- 0462US8999007B2Method for fines controlOSTARA NUTRIENT RECOVERY TECHNOLOGIES INC·Filed 2013·Granted Apr 7, 2015·1 cites·21 claims
- 0560US7604126B2Treatment of phosphate material using directly supplied, high power ultrasonic energyCARGILL INC·Filed 2005·Granted Oct 20, 2009·4 cites·21 claims
- 0649US11919792B2Treatment of phosphate-containing wastewater with fluorosilicate and phosphate recoveryOSTARA NUTRIENT RECOVERY TECH INC·Filed 2012·Granted Mar 5, 2024·0 cites·59 claims
- 0743USD1104689STool headCORONA CLIPPER INC·Filed 2023·Granted Dec 9, 2025·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →