Inventor · disambiguated record
Leonard D. Steffan
Also filed as: STEFFAN LEONARD D
5 granted patents·88 citations·filing 1976–1995
81Inventor score
Top patents by PatentIndex Score
5 records- 0186US4615722AValve block test apparatusOWENS ILLINOIS INC·Filed 1985·Granted Oct 7, 1986·42 cites·8 claims
- 0277US4499920AApparatus for controlling a valveOWENS ILLINOIS INC·Filed 1982·Granted Feb 19, 1985·25 cites·1 claims
- 0348US5405424AServo controlled glass gob distributorOWENS BROCKWAY GLASS CONTAINER·Filed 1993·Granted Apr 11, 1995·9 cites·3 claims
- 0443US4083278AShear spray apparatusOWENS ILLINOIS INC·Filed 1976·Granted Apr 11, 1978·8 cites·7 claims
- 0533US5562747AMethod of distributing molten glass gobs in an IS machineOWENS BROCKWAY GLASS CONTAINER·Filed 1995·Granted Oct 8, 1996·4 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →