Inventor · disambiguated record
Norman L. Kotraba
Also filed as: KOTRABA NORMAN L
8 granted patents·195 citations·filing 1986–1991
88Inventor score
Top patents by PatentIndex Score
8 records- 0192US5186741ADirect reduction process in a rotary hearth furnaceZIA PATENT COMPANY·Filed 1991·Granted Feb 16, 1993·91 cites·16 claims
- 0281US4836847AMethod for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardousZIA TECHNOLOGY INC·Filed 1988·Granted Jun 6, 1989·30 cites·6 claims
- 0380US4758268AMethod and apparatus for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardousZIA TECHNOLOGY INC·Filed 1986·Granted Jul 19, 1988·30 cites·16 claims
- 0466US4983214AMethod and apparatus for direct reduction of metal oxidesZIA TECHNOLOGY INC·Filed 1990·Granted Jan 8, 1991·28 cites·34 claims
- 0547US4963182AContinuous feed shaft retort process for recovery of non-ferrous metals from process dustZIA TECHNOLOGY INC·Filed 1989·Granted Oct 16, 1990·6 cites·13 claims
- 0646US4931090APneumatic steelmaking vessel and method of producing steelZIA TECHNOLOGY INC·Filed 1989·Granted Jun 5, 1990·6 cites·19 claims
- 0741US5028034AContinuous feed shaft retort appartus for recovery of non-ferrous metalsZIA PATENT COMPANY·Filed 1990·Granted Jul 2, 1991·4 cites·12 claims
- 0826US5164147AHeat treating furnaceZIA PATENT COMPANY·Filed 1991·Granted Nov 17, 1992·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →