Inventor · disambiguated record
Frithjof Schimpff
Also filed as: SCHIMPFF FRITHJOF
6 granted patents·1 pending application·27 citations·filing 1987–2010
77Inventor score
Top patents by PatentIndex Score
7 records- 0143US4948089AConcrete mold with arrangement for mounting tubular componentsWAYSS & FREYTAG AG·Filed 1987·Granted Aug 14, 1990·13 cites·6 claims
- 0234US5196209AMaking a prestressed concrete beamWAYSS & FREYTAG AG·Filed 1991·Granted Mar 23, 1993·5 cites·4 claims
- 0332US5124093AProcess for the production of concrete switch cross tiesWAYSS & FREYTAG AG·Filed 1989·Granted Jun 23, 1992·7 cites·2 claims
- 0428US2012181343A1Prestressed concrete sleeper and method for transporting and installing a switch having prestressed concrete sleepersSCHIMPFF FRITHJOF·Filed 2010·Application pending·0 cites
- 0525US5227112AMethod of making concrete switch cross tiesWAYSS & FREYTAG AG·Filed 1992·Granted Jul 13, 1993·1 cites·7 claims
- 0625US5127160AMethod of fastening construction components in a casing for series-produced finished partsWAYSS & FREYTAG AG·Filed 1989·Granted Jul 7, 1992·1 cites·4 claims
- 0719US5301927AMethod of making concrete switch cross tiesWAYSS & FREYTAG AKIENGESELLSCH·Filed 1993·Granted Apr 12, 1994·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →