Inventor · disambiguated record
Hendrik Roelofs
Also filed as: ROELOFS HENDRIK
7 granted patents·57 citations·filing 1975–1981
83Inventor score
Technology areasH01J
Files withPHILIPS CORP7
Top patents by PatentIndex Score
7 records- 0186US4260931ALow-pressure mercury vapor discharge lamp with luminescent coatings on envelope wallsPHILIPS CORP·Filed 1979·Granted Apr 7, 1981·29 cites·10 claims
- 0265US3959682AElectric lampPHILIPS CORP·Filed 1975·Granted May 25, 1976·12 cites·6 claims
- 0345US4237400ALow-pressure discharge lamp with tortuous discharge pathPHILIPS CORP·Filed 1979·Granted Dec 2, 1980·5 cites·4 claims
- 0438US4074172ADischarge lamp operating circuitPHILIPS CORP·Filed 1976·Granted Feb 14, 1978·4 cites·9 claims
- 0536US4401914ALow-pressure sodium vapor discharge lampPHILIPS CORP·Filed 1981·Granted Aug 30, 1983·3 cites·6 claims
- 0634US4221988ALow pressure gas discharge lamp having fibers evenly distributed between the electrodesPHILIPS CORP·Filed 1978·Granted Sep 9, 1980·2 cites·8 claims
- 0733US4143447AMethod of making a low-pressure gas discharge lampPHILIPS CORP·Filed 1978·Granted Mar 13, 1979·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →