Inventor · disambiguated record
Norbert C. Vollmann
Also filed as: VOLLMANN NORBERT · VOLLMANN NORBERT C · VOLLMANN NORBERT CHRISTIAN
26 granted patents·174 citations·filing 1985–1998
95Inventor score
Top patents by PatentIndex Score
26 records- 0190US5309302ASystem comprising a player and/or recorder apparatus and a tape cassette, and the apparatus and a cassette suitable for use in such a systemPHILIPS CORP·Filed 1991·Granted May 3, 1994·55 cites·5 claims
- 0271US5231553ASystem comprising magnetic tape cassette apparatus and two different types of magnetic tape cassettes playable in such apparatusPHILIPS CORP·Filed 1992·Granted Jul 27, 1993·20 cites·22 claims
- 0365US4722239AGear mechanismPHILIPS CORP·Filed 1987·Granted Feb 2, 1988·19 cites·5 claims
- 0455US5219090AHolder provided with two compartments and a cover arrangementPHILIPS CORP·Filed 1992·Granted Jun 15, 1993·10 cites·7 claims
- 0553US5357390AMagnetic tape with a cylindrical magnetic head housingPHILIPS CORP·Filed 1992·Granted Oct 18, 1994·9 cites·17 claims
- 0650US5074486AMagnetic-tape cassettePHILIPS CORP·Filed 1990·Granted Dec 24, 1991·8 cites·7 claims
- 0750US4642706AVideo cassette recorder with improved tape guiding and tensioningPHILIPS CORP·Filed 1985·Granted Feb 10, 1987·8 cites·7 claims
- 0844US5214554ACassette for a record carrierPHILIPS CORP·Filed 1991·Granted May 25, 1993·7 cites·7 claims
- 0944US5184259AHelical-scan magnetic tape apparatus having a tape-transport path with twisting path-sections for tape-path correctionPHILIPS CORP·Filed 1991·Granted Feb 2, 1993·6 cites·8 claims
- 1043US5365393AMagnetic tape cassette having a groove extending perpendicular to a front wall thereof for engagement by a loading mechanism of a tape cassette apparatusPHILIPS CORP·Filed 1993·Granted Nov 15, 1994·5 cites·12 claims
- 1140US5986854AMagnetic cassette recorder with reversing and translating magnetic headPHILIPS CORP·Filed 1994·Granted Nov 16, 1999·4 cites·5 claims
- 1238US5264987ACassette for magnetic tape provided with windowPHILIPS CORP·Filed 1992·Granted Nov 23, 1993·3 cites·17 claims
- 1337US5237479ATape cassette with slidable coverPHILIPS CORP·Filed 1992·Granted Aug 17, 1993·3 cites·34 claims
- 1436US5883755AApparatus for storage and/or reproduction of information on/from an information carrierPHILIPS CORP·Filed 1997·Granted Mar 16, 1999·3 cites·13 claims
- 1536US5592352ASystem for recording/reproducing signals on/from a magnetic tape in a cassettePHILIPS CORP·Filed 1995·Granted Jan 7, 1997·3 cites·8 claims
- 1636USD331235SDigital compact cassettePHILIPS CORP·Filed 1990·Granted Nov 24, 1992·2 cites·1 claims
- 1735USD442605SExtended tape cartridgeVERBATIM CORP·Filed 1998·Granted May 22, 2001·2 cites·1 claims
- 1834US5404251AAuto reverse cassette deck capable of recording/reproducing with two different cassette types and formatsPHILIPS CORP·Filed 1993·Granted Apr 4, 1995·3 cites·13 claims
- 1933US6016236AApparatus for the storage and/or reproduction of information on/from an information carrierONSTREAM INC·Filed 1997·Granted Jan 18, 2000·2 cites·20 claims
- 2032US5760996ASystem for recording/reproducing signals on/ from a magnetic tape in a cassettePHILIPS CORP·Filed 1992·Granted Jun 2, 1998·1 cites·19 claims
- 2131US5734539ASystem for recording and/or reproducing information, including a cassette with a record carrier in tape form and an apparatusPHILIPS CORP·Filed 1996·Granted Mar 31, 1998·1 cites·25 claims
- 2230US5779173AApparatus for operating the shutter of a cassettePHILIPS CORP·Filed 1996·Granted Jul 14, 1998·0 cites·28 claims
- 2330US5610778AMagnetic tape apparatus which senses and plays different types of cassettePHILIPS CORP·Filed 1994·Granted Mar 11, 1997·0 cites·9 claims
- 2430US5454529ACassette provided with magnetic tapePHILIPS CORP·Filed 1994·Granted Oct 3, 1995·0 cites·19 claims
- 2529US6122137ALoading mechanism for a recording and reproducing apparatus wherein a switch mechanism and the loading mechanism are a single unitONSTREAM INC·Filed 1997·Granted Sep 19, 2000·0 cites·11 claims
- 2621US5187629ACassette with magnetic tape on two coplanar reelsPHILIPS CORP·Filed 1991·Granted Feb 16, 1993·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →