Inventor · disambiguated record
Wilfried G. Holtje
Also filed as: HOELTJE WILFRIED G · HOLTJE WILFRIED
5 granted patents·34 citations·filing 1975–1982
77Inventor score
Top patents by PatentIndex Score
5 records- 0180US4286998ALight stable quinacridonequinone yellow pigmentDU PONT·Filed 1980·Granted Sep 1, 1981·14 cites·12 claims
- 0273US4125766AAutomatic electronic flash deviceROLLEI WERKE FRANKE HEIDECKE·Filed 1976·Granted Nov 14, 1978·10 cites·3 claims
- 0370US4544746AProcess for preparing 2-anilinoacridoneCIBA GEIGY CORP·Filed 1982·Granted Oct 1, 1985·8 cites·3 claims
- 0433US4426231ALight stable quinacridonequinone pigmentsDU PONT·Filed 1982·Granted Jan 17, 1984·1 cites·4 claims
- 0532USD246589SElectronic flash unitROLLEI WERKE FRANKE HEIDECKE·Filed 1975·Granted Dec 6, 1977·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →