Inventor · disambiguated record
Leonard A. Knavish
Also filed as: KNAVISH LEONARD A
6 granted patents·261 citations·filing 1974–1990
85Inventor score
Files withPPG INDUSTRIES INC6
Top patents by PatentIndex Score
6 records- 0195US4798616AMulti-stage process and apparatus for refining glass or the likePPG INDUSTRIES INC·Filed 1987·Granted Jan 17, 1989·95 cites·18 claims
- 0294US4001001AHorizontal glassmaking furnacePPG INDUSTRIES INC·Filed 1976·Granted Jan 4, 1977·97 cites·3 claims
- 0385US5006144AMelting glass with oxidation control and lowered emissionsPPG INDUSTRIES INC·Filed 1990·Granted Apr 9, 1991·45 cites·26 claims
- 0457US3998619AVertical glassmaking furnace and method of operationPPG INDUSTRIES INC·Filed 1976·Granted Dec 21, 1976·16 cites·6 claims
- 0545US3940256AApparatus and method for controlling the flatness of a newly-formed continuous sheet of flat glassPPG INDUSTRIES INC·Filed 1974·Granted Feb 24, 1976·4 cites·13 claims
- 0635US4919698AAvoidance of nickel sulfide stones in a glass melting operationPPG INDUSTRIES INC·Filed 1989·Granted Apr 24, 1990·4 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →