Inventor · disambiguated record
David F. Lewis
Also filed as: LEWIS DAVID F · LEWIS DAVID FRANK · LYSHKOW NORMAN A
4 granted patents·85 citations·filing 1979–1994
77Inventor score
Top patents by PatentIndex Score
4 records- 0193US4201551AEmbrittlement additive for treating organic materialsCOMBUSTION EQUIP ASS·Filed 1979·Granted May 6, 1980·54 cites·29 claims
- 0260US5693740AAromatic polysulphonesUNITED UTILITES PLC·Filed 1994·Granted Dec 2, 1997·25 cites·38 claims
- 0352US4777300AAromatic ketoneICI PLC·Filed 1987·Granted Oct 11, 1988·4 cites·10 claims
- 0443US4612399APurification of 4-fluoro-4'-hydroxybenzophenoneICI PLC·Filed 1985·Granted Sep 16, 1986·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →