Inventor · disambiguated record
Johannes W. A. Krol
Also filed as: KROL JOHANNES W A · KROL JOHANNES WILHELMUS ANTONI · SEIFERT HORST
5 granted patents·54 citations·filing 1975–1978
79Inventor score
Technology areasH01J
Files withPHILIPS CORP5
Top patents by PatentIndex Score
5 records- 0183US4137477AElectrodes, for example grid-like electrodes for use in electron tubes, and a method for manufacturing samePHILIPS CORP·Filed 1977·Granted Jan 30, 1979·21 cites·8 claims
- 0271US4034031AMethod of manufacturing grid electrodes for electron tubesPHILIPS CORP·Filed 1975·Granted Jul 5, 1977·13 cites·8 claims
- 0370US4250429AElectron tube cathodePHILIPS CORP·Filed 1977·Granted Feb 10, 1981·11 cites·19 claims
- 0460US4178530AElectron tube with pyrolytic graphite heating elementPHILIPS CORP·Filed 1978·Granted Dec 11, 1979·8 cites·5 claims
- 0532US4120080AMethod of manufacturing grid electrodes for electron tubesPHILIPS CORP·Filed 1977·Granted Oct 17, 1978·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →