Individual holder
JANTZEN STEVEN L
US·3 granted patents·33 citations·filing 1986–1987
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0167US4812113AMold assembly for pre-stressed concrete railroad tiesJANTZEN STEVEN L·Filed 1987·Granted Mar 14, 1989·24 cites·6 claims
- 0235US4773840AManufacture of pre-stressed concrete railroad tiesJANTZEN STEVEN L·Filed 1987·Granted Sep 27, 1988·5 cites·7 claims
- 0330US4781875AManufacture of pre-stressed concrete railroad tiesJANTZEN STEVEN L·Filed 1986·Granted Nov 1, 1988·4 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →