Inventor · disambiguated record
Nicolaas T. Van Der Walt
Also filed as: VAN DER WALT NICOLAAS T · VAN DER WALT NICOLAAS TJAART
7 granted patents·141 citations·filing 1974–1991
86Inventor score
Top patents by PatentIndex Score
7 records- 0175US4827215AMethod of and apparatus for magnetic saturation testing a wire rope for defectsCRUCIBLE SA·Filed 1987·Granted May 2, 1989·41 cites·5 claims
- 0271US5036277AMethod of and apparatus for detecting cross sectional area variations in an elongate object by the non-inductive measurement of radial flux variationsCRUCIBLE SA·Filed 1988·Granted Jul 30, 1991·28 cites·11 claims
- 0368US4459583AAlarm systemWALT NICOLAAS T VAN DER·Filed 1981·Granted Jul 10, 1984·28 cites·12 claims
- 0454US4606219AGas detectorsCRUCIBLE SA·Filed 1984·Granted Aug 19, 1986·17 cites·10 claims
- 0553US5198765AMethod of and apparatus for simultaneously testing a wire rope for multiple defectsWALT NICOLAAS T VAN DER·Filed 1991·Granted Mar 30, 1993·20 cites·8 claims
- 0630US4423411AIonization type fire detectorCRUCIBLE SA·Filed 1981·Granted Dec 27, 1983·4 cites·7 claims
- 0728US3961195AFire detector having means for heating the support member of an electrode to prevent formation of moisture thereonNEWINGTON TIMOTHY JOHN·Filed 1974·Granted Jun 1, 1976·3 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →