Inventor · disambiguated record
Klaas B. Klaassen
Also filed as: KLAASSEN KLAAS · KLAASSEN KLAAS B · KLAASSEN KLAAS BEREND
43 granted patents·2,041 citations·filing 1981–2008
99Inventor score
Top patents by PatentIndex Score
43 records- 0197US6400518B1Magneto-resistive asymmetry correction circuitIBM·Filed 2000·Granted Jun 4, 2002·93 cites·17 claims
- 0297US5608591AIntegrated head-electronics interconnection suspension for a data recording disk driveIBM·Filed 1995·Granted Mar 4, 1997·147 cites·20 claims
- 0397US5270882ALow-voltage, low-power amplifier for magnetoresistive sensorIBM·Filed 1992·Granted Dec 14, 1993·106 cites·10 claims
- 0496US4914398AMethod and circuitry to suppress additive disturbances in data channels containing MR sensorsIBM·Filed 1988·Granted Apr 3, 1990·78 cites·11 claims
- 0595US5544138AAdaptive system for optimizing disk drive power consumptionIBM·Filed 1995·Granted Aug 6, 1996·105 cites·9 claims
- 0695US4777544AMethod and apparatus for in-situ measurement of head/recording medium clearanceIBM·Filed 1986·Granted Oct 11, 1988·281 cites·34 claims
- 0794US7352535B2Method and apparatus for reducing crosstalk and signal loss in flexing interconnects of an electrical lead suspensionHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Apr 1, 2008·19 cites·26 claims
- 0893US5130866AMethod and circuitry for in-situ measurement of transducer/recording medium clearance and transducer magnetic instabilityIBM·Filed 1990·Granted Jul 14, 1992·174 cites·28 claims
- 0991US6622252B1Data storage device having selectable performance modes for use in dual powered portable devicesIBM·Filed 2000·Granted Sep 16, 2003·74 cites·21 claims
- 1091US6608736B1Integrated trace suspension interconnect for high-data-rate single-ended preamplifier for (G)MR elementsIBM·Filed 2000·Granted Aug 19, 2003·31 cites·18 claims
- 1190US7061706B2Circuitry for linear control of head flying height using thermal meansHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jun 13, 2006·28 cites·23 claims
- 1290US4879610AProtective circuit for a magnetoresistive elementIBM·Filed 1988·Granted Nov 7, 1989·51 cites·25 claims
- 1389US7545608B2Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with impedance adjustmentHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jun 9, 2009·12 cites·16 claims
- 1489US5521896AAdaptive system for optimizing disk drive power consumptionIBM·Filed 1995·Granted May 28, 1996·55 cites·6 claims
- 1589US4712144AMethod and apparatus for reading recorded data by a magnetoresistive headIBM·Filed 1985·Granted Dec 8, 1987·37 cites·10 claims
- 1688US5818656ACircuitry for correction of thermal transients in the analog signal from a magnetoresistive sensorIBM·Filed 1996·Granted Oct 6, 1998·59 cites·29 claims
- 1788US5452277AAdaptive system for optimizing disk drive power consumptionIBM·Filed 1993·Granted Sep 19, 1995·118 cites·15 claims
- 1888US5168395AControlled magnetic recording head relaxation in a magnetic recording systemIBM·Filed 1990·Granted Dec 1, 1992·45 cites·23 claims
- 1987US6201653B1By-pass write drivers for high-performance data recordingIBM·Filed 1998·Granted Mar 13, 2001·48 cites·42 claims
- 2086US7667914B2Direct coupled wide-bandwidth front-end with smart bias control amplifierHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Feb 23, 2010·7 cites·14 claims
- 2186US5969523APreamplifier bias mode to re-initialize a GMR head after losing initializationIBM·Filed 1997·Granted Oct 19, 1999·47 cites·17 claims
- 2285US5057785AMethod and circuitry to suppress additive disturbances in data channelsIBM·Filed 1990·Granted Oct 15, 1991·38 cites·13 claims
- 2385US4706138AAmplification of signals produced by a magnetic sensorIBM·Filed 1986·Granted Nov 10, 1987·47 cites·13 claims
- 2484US7158348B2Integrated lead suspension for use in a disk drive using a tri-metal laminate and method for fabricationHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Jan 2, 2007·30 cites·20 claims
- 2584US6671113B2Characteristically terminated write driver with compensation for magnetic response and method thereforIBM·Filed 2001·Granted Dec 30, 2003·17 cites·23 claims
- 2683US5103353ALow noise amplifier with short circuit protection for signals from magnetoresistive elementIBM·Filed 1990·Granted Apr 7, 1992·38 cites·18 claims
- 2783US4786993AVoltage amplifier for constant voltage biasing and amplifying signals from a MR sensorIBM·Filed 1986·Granted Nov 22, 1988·41 cites·20 claims
- 2881US7619843B2Write through drivers for disk drive systemsHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Nov 17, 2009·4 cites·19 claims
- 2981US7489479B2Electrical lead suspension having partitioned air slotsHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Feb 10, 2009·9 cites·39 claims
- 3078US6420910B1Quasi-current sensing input impedance controlled preamplifier for magnetoresistive elementsIBM·Filed 1999·Granted Jul 16, 2002·41 cites·18 claims
- 3178US5323278ALow noise amplifier circuit for magnetoresistive sensors for fast read-write switching in low supply voltage applicationsIBM·Filed 1992·Granted Jun 21, 1994·28 cites·10 claims
- 3277US8059373B2EMR sensor and transistor formed on the same substrateFOLKS LIESL·Filed 2006·Granted Nov 15, 2011·3 cites·16 claims
- 3376US5032935AAmplification of signals produced by a magnetoresistive elementIBM·Filed 1989·Granted Jul 16, 1991·22 cites·10 claims
- 3473US8174788B2Motor mount for interference suppression in a hard disk driveCONTRERAS JOHN·Filed 2008·Granted May 8, 2012·2 cites·15 claims
- 3573US5877911AMagneto-resistive head pre-amplifying circuit for avoiding output voltage transientsIBM·Filed 1996·Granted Mar 2, 1999·26 cites·4 claims
- 3671US5986839AElectronic magnetoresistive sensor biasing using a transducer equivalent circuit and current sourcesIBM·Filed 1996·Granted Nov 16, 1999·28 cites·32 claims
- 3755US7177107B2Preamplifier circuit with signal interference cancellation suitable for use in magnetic storage devicesHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Feb 13, 2007·2 cites·27 claims
- 3855US6859347B2Magnetic transducer with electrically conductive shield for reducing electromagnetic interferenceHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Feb 22, 2005·3 cites·16 claims
- 3955US6101056AElectronic magnetoresistive voltage biasing using a circuit and current mirrorsIBM·Filed 1999·Granted Aug 8, 2000·15 cites·15 claims
- 4052US4547817AHigh frequency magnetic recording methodIBM·Filed 1985·Granted Oct 15, 1985·8 cites·10 claims
- 4152US4390911ASignal separation in magnetic recording using buried servoIBM·Filed 1981·Granted Jun 28, 1983·7 cites·7 claims
- 4251US5953173AHigh CMRR and sensor-disk short-circuit protection device for dual element magnetoresistive headsIBM·Filed 1996·Granted Sep 14, 1999·9 cites·42 claims
- 4345US4743861AFrequency response compensation circuitIBM·Filed 1986·Granted May 10, 1988·8 cites·2 claims
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