Inventor · disambiguated record
Robert J. Kotch
Also filed as: KOTCH ROBERT J
5 granted patents·271 citations·filing 1980–1991
85Inventor score
Top patents by PatentIndex Score
5 records- 0187US4466622ACompound dynamic seal for rolling cutter drill bitREED ROCK BIT CO·Filed 1982·Granted Aug 21, 1984·44 cites·6 claims
- 0284US4619534ARoller cutter drill bit having a texturized seal memberREED TOOL CO·Filed 1984·Granted Oct 28, 1986·69 cites·12 claims
- 0384US4306727ADynamic seal for rolling cutter drill bitREED ROCK BIT CO·Filed 1980·Granted Dec 22, 1981·37 cites·10 claims
- 0480US4838365ASeal assembly for rotary drill bitsREED TOOL CO·Filed 1988·Granted Jun 13, 1989·52 cites·3 claims
- 0575US5072795APressure compensator for drill bit lubrication systemCAMCO INT·Filed 1991·Granted Dec 17, 1991·69 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →