Inventor · disambiguated record
Donovan M. Janssen
Also filed as: JANSSEN DONOVAN M · JANSSEN DONOVAN MILO
29 granted patents·611 citations·filing 1978–2002
97Inventor score
Top patents by PatentIndex Score
29 records- 0196US4511242AElectronic alignment for a paper processing machineIBM·Filed 1982·Granted Apr 16, 1985·117 cites·41 claims
- 0296US4438917ADual motor alignerIBM·Filed 1981·Granted Mar 27, 1984·78 cites·7 claims
- 0395US4295733AAutomatic error collator capacity constraints using spare bin strategyIBM·Filed 1979·Granted Oct 20, 1981·51 cites·12 claims
- 0492US4424963AFinisher--exit pocket module for copierIBM·Filed 1981·Granted Jan 10, 1984·49 cites·9 claims
- 0588US4457506AServo-controlled automatic document feederIBM·Filed 1981·Granted Jul 3, 1984·27 cites·9 claims
- 0687US4455018ADocument feeder electronic registration gateIBM·Filed 1981·Granted Jun 19, 1984·32 cites·3 claims
- 0784US5547142ATape cassette with internal tape cleaning and lockingSTORAGE TECHNOLOGY CORP·Filed 1994·Granted Aug 20, 1996·36 cites·5 claims
- 0881US6786445B1Method for packing tape on a spool without tape edge wearSTORAGE TECHNOLOGY CORP·Filed 2002·Granted Sep 7, 2004·17 cites·20 claims
- 0981US5519554ARack and pinion linear slide read/write head positioning deviceSTORAGE TECHNOLOGY CORP·Filed 1994·Granted May 21, 1996·31 cites·20 claims
- 1080US4208684ADamper for constant load armIBM·Filed 1978·Granted Jun 17, 1980·25 cites·6 claims
- 1177US5657937ATape reel lock mechanism for coaxial reel tape cartridgeSTORAGE TECHNOLOGY CORP·Filed 1996·Granted Aug 19, 1997·26 cites·22 claims
- 1273US6441990B2Compact tape drive having delayed in time first, second and third rotated tape guides for reading and writing data on single reel magnetic tape cartridgesSTORAGE TECHNOLOGY CORP·Filed 2001·Granted Aug 27, 2002·8 cites·5 claims
- 1358US4398709AWave generation amplification apparatus for cut sheet paper feedingIBM·Filed 1981·Granted Aug 16, 1983·12 cites·9 claims
- 1458US4395033AShingling with controlled force and/or velocityIBM·Filed 1981·Granted Jul 26, 1983·12 cites·18 claims
- 1556US6891695B1Compact tape drive for reading and writing data on single reel magnetic tape cartridgesSTORAGE TECHNOLOGY CORP·Filed 1998·Granted May 10, 2005·11 cites·18 claims
- 1656US5734540ATape reel and cartridge having protective flange ringsSTORAGE TECHNOLOGY CORP·Filed 1997·Granted Mar 31, 1998·12 cites·6 claims
- 1753US4628385ATwo stage colleting in a flexible disk driveIBM·Filed 1984·Granted Dec 9, 1986·8 cites·6 claims
- 1852US5618005ACoaxial reel tape cartridge with reduced tape forcesSTORAGE TECHNOLOGY CORP·Filed 1995·Granted Apr 8, 1997·9 cites·22 claims
- 1950US4229774ASelf-adapting flow restrictorsIBM·Filed 1979·Granted Oct 21, 1980·6 cites·4 claims
- 2049US5325255ASelf identifying universal data storage elementSTORAGE TECHNOLOGY CORP·Filed 1991·Granted Jun 28, 1994·7 cites·30 claims
- 2146US4636892AFlexible disk drive optimized for automated manufactureIBM·Filed 1984·Granted Jan 13, 1987·6 cites·20 claims
- 2245US5572393ACompliant guide assembly for a magnetic tape transportSTORAGE TECHNOLOGY CORP·Filed 1994·Granted Nov 5, 1996·9 cites·5 claims
- 2339US5816519AAutomatic tape guide arm with three dimensional range of motion and method of operating the sameSTORAGE TECHNOLOGY COPRORATION·Filed 1997·Granted Oct 6, 1998·6 cites·16 claims
- 2438US5430922AMethod for calibrating a compliant guide assembly for a magnetic tape transportSTORAGE TECHNOLOGY CORP·Filed 1993·Granted Jul 11, 1995·5 cites·8 claims
- 2538US4164768ADual stage flow controller for self-ventilating disk packIBM·Filed 1978·Granted Aug 14, 1979·3 cites·11 claims
- 2637US6246549B1Method and apparatus for reducing the coupling of the reaction force from the head actuator into the track follow servo loop of a media driveSTORAGE TECHNOLOGY CORP·Filed 1999·Granted Jun 12, 2001·3 cites·6 claims
- 2731US5504983AFixture for calibrating a compliant guide assembly for a magnetic tape transportSTORAGE TECHNOLOGY CORP·Filed 1994·Granted Apr 9, 1996·2 cites·5 claims
- 2831US4626943ATorsional actuator for loading and unloading flexible disk driveIBM·Filed 1984·Granted Dec 2, 1986·1 cites·7 claims
- 2926US4707753ADisk drive head access mechanismIBM·Filed 1985·Granted Nov 17, 1987·2 cites·14 claims
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