Assignee
POLYGRAM INT HOLDING
NL·15 granted patents·680 citations·filing 1986–1996
Top patents by PatentIndex Score
15 records- 0197US4722439ADisc receiving tray and a combination of such a tray with a storage cassettePOLYGRAM INT HOLDING·Filed 1986·Granted Feb 2, 1988·95 cites·17 claims
- 0295US4750173AMethod of transmitting audio information and additional information in digital formPOLYGRAM INT HOLDING·Filed 1986·Granted Jun 7, 1988·326 cites·7 claims
- 0392US4747093ADisc-shaped information carrier and method of manufacturing itPOLYGRAM INT HOLDING·Filed 1986·Granted May 24, 1988·69 cites·17 claims
- 0487US4805770ACassette with tray ejection meansPOLYGRAM INT HOLDING·Filed 1987·Granted Feb 21, 1989·54 cites·7 claims
- 0582US4726006ADisc-shaped information carrier and method of manufacturing itPOLYGRAM INT HOLDING·Filed 1986·Granted Feb 16, 1988·28 cites·25 claims
- 0667US4864439AApparatus drawer for unambiguously receiving a digital audio tape cassettePOLYGRAM INT HOLDING·Filed 1988·Granted Sep 5, 1989·17 cites·17 claims
- 0760US5148330AMethod of and arrangement for obtaining prerecorded digital music cassettesPOLYGRAM INT HOLDING·Filed 1991·Granted Sep 15, 1992·15 cites·31 claims
- 0851US5700500ATwo-stage injection-molding machinePOLYGRAM INT HOLDING·Filed 1996·Granted Dec 23, 1997·16 cites·4 claims
- 0951US4681280AMagnetic-tape cassette with stretched liner arrangementPOLYGRAM INT HOLDING·Filed 1986·Granted Jul 21, 1987·11 cites·8 claims
- 1047US4745690AMethod of replenishing and/or preparing treating liquidsPOLYGRAM INT HOLDING·Filed 1987·Granted May 24, 1988·16 cites·12 claims
- 1140US5699742AMethod and device for exactly aligning a printing image relative to a geometrically correct print position of a printing machinePOLYGRAM INT HOLDING·Filed 1996·Granted Dec 23, 1997·16 cites·10 claims
- 1237US4868683AMethod of aligning objects by detecting a reference picture line therein which has an optically characteristic picture contentPOLYGRAM INT HOLDING·Filed 1987·Granted Sep 19, 1989·7 cites·19 claims
- 1334US5243470AArrangement for obtaining prerecorded digital music cassettesPOLYGRAM INT HOLDING·Filed 1991·Granted Sep 7, 1993·3 cites·16 claims
- 1433US4882637ACopying 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
- 1530US5135149AApparatus for the storage and transport of an elongate endless tapePOLYGRAM INT HOLDING·Filed 1988·Granted Aug 4, 1992·4 cites·12 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →