Inventor · disambiguated record
Franciscus A. S. Ligthart
Also filed as: LIGTHART FRANCISCUS A S · LIGTHART FRANCISCUS ANTONIUS S
11 granted patents·179 citations·filing 1979–1998
91Inventor score
Files withPHILIPS CORP11
Top patents by PatentIndex Score
11 records- 0180US5387837ALow-pressure discharge lamp and luminaire provided with such a lampPHILIPS CORP·Filed 1993·Granted Feb 7, 1995·42 cites·19 claims
- 0277US5825125ANeon discharge lampPHILIPS CORP·Filed 1996·Granted Oct 20, 1998·35 cites·18 claims
- 0375US5239238AElectrodeless low-pressure mercury vapour discharge lampPHILIPS CORP·Filed 1992·Granted Aug 24, 1993·35 cites·20 claims
- 0456US5719465ALow pressure mercury vapor discharge lampPHILIPS CORP·Filed 1995·Granted Feb 17, 1998·16 cites·21 claims
- 0555US5907216ALow-pressure mercury vapour discharge lampPHILIPS CORP·Filed 1995·Granted May 25, 1999·14 cites·5 claims
- 0653US4335330ALow-pressure mercury vapor discharge lampPHILIPS CORP·Filed 1980·Granted Jun 15, 1982·16 cites·7 claims
- 0750US5233268ALow-pressure mercury vapor discharge lampPHILIPS CORP·Filed 1991·Granted Aug 3, 1993·9 cites·15 claims
- 0842US4546285ALow-pressure mercury vapor discharge lampPHILIPS CORP·Filed 1985·Granted Oct 8, 1985·5 cites·11 claims
- 0940US5982089ALow-pressure mercury discharge meander lamp dimensioned for even illumination and favorable power consumptionPHILIPS CORP·Filed 1993·Granted Nov 9, 1999·5 cites·10 claims
- 1030US6060831ADischarge lamp with specific fill and luminescent layersPHILIPS CORP·Filed 1998·Granted May 9, 2000·1 cites·10 claims
- 1130US4277720ALow-pressure mercury vapor discharge lampPHILIPS CORP·Filed 1979·Granted Jul 7, 1981·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →