Inventor · disambiguated record
David R. Spears
Also filed as: SPEARS DAVID · SPEARS DAVID R
5 granted patents·199 citations·filing 1990–1999
83Inventor score
Top patents by PatentIndex Score
5 records- 0193US5354464AMulti-port connecting deviceWATER FACTORY SYSTEMS·Filed 1990·Granted Oct 11, 1994·121 cites·15 claims
- 0273US6139744AWaste treatment device and method employing the sameMICROSEPTEC INC·Filed 1999·Granted Oct 31, 2000·47 cites·61 claims
- 0351USD366094SCounter-top water purification systemWATER FACTORY SYSTEMS INC·Filed 1990·Granted Jan 9, 1996·9 cites·1 claims
- 0447USD350384SPurified water dispenserWATER FACTORY SYSTEMS·Filed 1990·Granted Sep 6, 1994·6 cites·1 claims
- 0541US6048452AWaste treatment device and method employing the sameFiled 1998·Granted Apr 11, 2000·16 cites·81 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →