Inventor · disambiguated record
Johannes J. Roering
Also filed as: ROERING JOHANNES J · ROERING JOHANNES JACOBUS
5 granted patents·29 citations·filing 1988–1994
77Inventor score
Technology areasG11B
Top patents by PatentIndex Score
5 records- 0160US5148330AMethod of and arrangement for obtaining prerecorded digital music cassettesPOLYGRAM INT HOLDING·Filed 1991·Granted Sep 15, 1992·15 cites·31 claims
- 0238US5371634AArrangement for obtaining prerecorded digital music cassettesPHILIPS CORP·Filed 1994·Granted Dec 6, 1994·4 cites·5 claims
- 0337US5363250APrerecorded record carrierPHILIPS CORP·Filed 1992·Granted Nov 8, 1994·4 cites·9 claims
- 0434US5243470AArrangement for obtaining prerecorded digital music cassettesPOLYGRAM INT HOLDING·Filed 1991·Granted Sep 7, 1993·3 cites·16 claims
- 0533US4882637ACopying apparatus for copying a magnetic pattern from a master magnetic tape on a duplicate magnetic tape and method of operating such a copying apparatusPOLYGRAM INT HOLDING·Filed 1988·Granted Nov 21, 1989·3 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →