Inventor · disambiguated record
David C. Johnston
Also filed as: JOHNSTON DAVID C · JOHNSTON DAVID CHARLES
5 granted patents·1 pending application·71 citations·filing 1987–2019
81Inventor score
Top patents by PatentIndex Score
6 records- 0183US8388274B2Round cutting insert with asymmetric chipbreaker featureCHEN SHI·Filed 2010·Granted Mar 5, 2013·8 cites·19 claims
- 0283USD523040SCutting tool insertKENNAMETAL INC·Filed 2005·Granted Jun 13, 2006·33 cites·1 claims
- 0365US4832877ATetranuclear sulfido-bridged complex of Cr(III) having a strongly magnetic ground stateEXXON RESEARCH ENGINEERING CO·Filed 1987·Granted May 23, 1989·10 cites·17 claims
- 0458USD431579SCutting insertKENNAMETAL INC·Filed 1999·Granted Oct 3, 2000·10 cites·1 claims
- 0558USD423024SCutting insertKENNAMETAL INC·Filed 1999·Granted Apr 18, 2000·10 cites·1 claims
- 0643US2022010593A1Cam assisted handle systemARCONIC TECH LLC·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →