Inventor · disambiguated record
Ferdinand P. Van Der Spek
Also filed as: VAN DER SPEK FERDINAND · VAN DER SPEK FERDINAND P
3 granted patents·27 citations·filing 1987–1989
70Inventor score
Technology areasB01D
Top patents by PatentIndex Score
3 records- 0146USD319316SSquare construction moduleVAN WEERDEN JAN·Filed 1989·Granted Aug 20, 1991·5 cites·1 claims
- 0246USD319108SRectangular construction moduleVAN WEERDEN JAN·Filed 1989·Granted Aug 13, 1991·5 cites·1 claims
- 0346US4854953AAir filter and module to be used for building up such a filterFILTRETE BV·Filed 1987·Granted Aug 8, 1989·17 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →