Inventor · disambiguated record
Jan Z. Tomaka
Also filed as: TOMAKA JAN Z
3 granted patents·131 citations·filing 1986–1988
76Inventor score
Technology areasB61D
Top patents by PatentIndex Score
3 records- 0188US4930427ARailroad gondola or hopper car, particularly a coal carTHRALL CAR MFG CO·Filed 1988·Granted Jun 5, 1990·64 cites·26 claims
- 0282US4840127ATop chord for open top hopper carsALCAN INT LTD·Filed 1987·Granted Jun 20, 1989·43 cites·19 claims
- 0364US4800820ASide sill arrangement for a gondola-type railroad carALCAN INT LTD·Filed 1986·Granted Jan 31, 1989·24 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →