Inventor · disambiguated record
Willebrordus H. M. M. Van De Spijker
Also filed as: VAN DE SPIJKER WILLEBRORDUS H · VAN DE SPIJKER WILLEBRORDUS HU · VERRIET JOHANNES G
8 granted patents·113 citations·filing 1974–1985
87Inventor score
Technology areasC09K
Files withPHILIPS CORP8
Top patents by PatentIndex Score
8 records- 0193US4216408ALuminescent material and discharge lamp and cathode ray tube containing the samePHILIPS CORP·Filed 1978·Granted Aug 5, 1980·62 cites·21 claims
- 0270US4441049ALuminescent material and discharge lamp containing the samePHILIPS CORP·Filed 1982·Granted Apr 3, 1984·18 cites·4 claims
- 0362US4837481ACerium and terbium activated luminescent material and mercury vapor discharge lamp containing the samePHILIPS CORP·Filed 1985·Granted Jun 6, 1989·12 cites·3 claims
- 0445US4382207ALuminescent material and discharge lamp containing the samePHILIPS CORP·Filed 1980·Granted May 3, 1983·7 cites·4 claims
- 0545US4049992ABeryllium-containing europium activated phosphate phosphor, luminescent screen and discharge lamp containing samePHILIPS CORP·Filed 1974·Granted Sep 20, 1977·4 cites·14 claims
- 0638US4233538ALuminescent lead-activated alkaline earth metal rare earth metal borates and mercury vapor discharge lamp containing the samePHILIPS CORP·Filed 1979·Granted Nov 11, 1980·6 cites·10 claims
- 0733US4127498ALuminescent materialPHILIPS CORP·Filed 1974·Granted Nov 28, 1978·1 cites·4 claims
- 0831US3956663ALuminescent screen with thallium activated aluminatePHILIPS CORP·Filed 1975·Granted May 11, 1976·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →