Inventor · disambiguated record
Johannes H. M. Spruit
Also filed as: SPRUIT JOHANNES H · SPRUIT JOHANNES H M · SPRUIT JOHANNES HENDRIK · SPRUIT JOHANNES HENDRIKUS M
19 granted patents·4 pending applications·587 citations·filing 1984–2004
96Inventor score
Top patents by PatentIndex Score
23 records- 0195US6115340AModifying the recording process to extend the life of a rewritable information carrierPHILIPS CORP·Filed 1997·Granted Sep 5, 2000·126 cites·23 claims
- 0292US4634926ADisplay tube provided with an interference filterPHILIPS CORP·Filed 1984·Granted Jan 6, 1987·46 cites·17 claims
- 0389US6205102B1Method and device for recording an optical information carrierPHILIPS CORP·Filed 1997·Granted Mar 20, 2001·52 cites·26 claims
- 0488US6751513B1Method and device for recording an optical information carrierKONINKL PHILIPS ELECTRONICS NV·Filed 2000·Granted Jun 15, 2004·25 cites·4 claims
- 0584US4683398AProjection television display tube and device having interference filterPHILIPS CORP·Filed 1985·Granted Jul 28, 1987·33 cites·17 claims
- 0683US6269071B1Optical record carrierPHILIPS CORP·Filed 1999·Granted Jul 31, 2001·38 cites·10 claims
- 0783US5978351AOptical recording medium with recording control informationPHILIPS CORP·Filed 1997·Granted Nov 2, 1999·53 cites·13 claims
- 0882US6243339B1Method and device for writing optical record carriersPHILIPS CORP·Filed 1998·Granted Jun 5, 2001·40 cites·12 claims
- 0982US6167012AInformation carrier, reading/writing device and reading device for writing and/or reading information blocksPHILIPS CORP·Filed 2000·Granted Dec 26, 2000·13 cites·4 claims
- 1080US4804884ADisplay tube having improved brightness distributionPHILIPS CORP·Filed 1987·Granted Feb 14, 1989·25 cites·42 claims
- 1180US4647812ADisplay tube having a display window with an interference filterPHILIPS CORP·Filed 1985·Granted Mar 3, 1987·25 cites·15 claims
- 1276US5617399AWrite intensity calibration of a recording beam by reading a test pattern written on a buffer sector of a record carrierPHILIPS CORP·Filed 1995·Granted Apr 1, 1997·30 cites·17 claims
- 1372US5471457AMethods and devices for recording one or more signals which have been encoded by on error detection and correction algorithm on a record carrier by means of an optimal recording intensityPHILIPS CORP·Filed 1993·Granted Nov 28, 1995·22 cites·34 claims
- 1462US6091681AInformation carrier, reading/writing device and reading device for writing and/or reading information blocksPHILIPS CORP·Filed 1997·Granted Jul 18, 2000·13 cites·10 claims
- 1559US6295270B1Optical record carrier with grooves having wobbles with phases depending on position information pits at predetermined positionsPHILIPS CORP·Filed 1999·Granted Sep 25, 2001·11 cites·9 claims
- 1653US4807014AThree tube color projection television system having multispot blue tube and single-spot red and green tubesPHILIPS CORP·Filed 1987·Granted Feb 21, 1989·13 cites·12 claims
- 1752US6021109AOptical recording mediumPHILIPS CORP·Filed 1998·Granted Feb 1, 2000·10 cites·24 claims
- 1845US4766498AImage projection systemPHILIPS CORP·Filed 1987·Granted Aug 23, 1988·11 cites·9 claims
- 1943US2002048238A1Optical record carrier and scanning apparatusPHILIPS CORP·Filed 2002·Application pending·0 cites
- 2039US2002085462A1Method and optical recording apparatus for determining the optimum write powerFiled 2001·Application pending·0 cites
- 2138US2006262684A1Multilayer optical disc having wobble pitsSPRUIT JOHANNES H M·Filed 2004·Application pending·0 cites
- 2238US2004081046A1Optical recording method and apparatus using this methodFiled 2003·Application pending·0 cites
- 2330US5061993AProjection television display devicePHILIPS CORP·Filed 1988·Granted Oct 29, 1991·1 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →