Inventor · disambiguated record
Karl M. J. Lofgren
Also filed as: LOFGREN KARL M · LOFGREN KARL M J
24 granted patents·2 pending applications·4,798 citations·filing 1985–2009
98Inventor score
Top patents by PatentIndex Score
26 records- 0199US6850443B2Wear leveling techniques for flash EEPROM systemsSANDISK CORP·Filed 2003·Granted Feb 1, 2005·424 cites·12 claims
- 0299US6715044B2Device and method for controlling solid-state memory systemSANDISK CORP·Filed 2001·Granted Mar 30, 2004·326 cites·39 claims
- 0399US6230233B1Wear leveling techniques for flash EEPROM systemsSANDISK CORP·Filed 1991·Granted May 8, 2001·824 cites·33 claims
- 0499US6081447AWear leveling techniques for flash EEPROM systemsSANDISK CORP·Filed 1999·Granted Jun 27, 2000·516 cites·6 claims
- 0599US5430859ASolid state memory system including plural memory chips and a serialized busWESTERN DIGITAL CORP·Filed 1991·Granted Jul 4, 1995·822 cites·26 claims
- 0698US7353325B2Wear leveling techniques for flash EEPROM systemsSANDISK CORP·Filed 2005·Granted Apr 1, 2008·68 cites·8 claims
- 0798US6594183B1Wear leveling techniques for flash EEPROM systemsSANDISK CORP·Filed 1998·Granted Jul 15, 2003·409 cites·19 claims
- 0898US5806070ADevice and method for controlling solid-state memory systemSANDISK CORP·Filed 1997·Granted Sep 8, 1998·177 cites·3 claims
- 0998US4922141APhase-locked loop delay lineWESTERN DIGITAL CORP·Filed 1988·Granted May 1, 1990·263 cites·31 claims
- 1097US6317812B1Device and method for controlling solid-state memory systemFiled 2000·Granted Nov 13, 2001·163 cites·6 claims
- 1194US5438573AFlash EEPROM array data and header file structureSUNDISK CORP·Filed 1994·Granted Aug 1, 1995·208 cites·22 claims
- 1293US6148363ADevice and method for controlling solid-state memory systemSANDISK CORP·Filed 1998·Granted Nov 14, 2000·130 cites·29 claims
- 1392US5126692AVariable frequency system having linear combination of charge pump and voltage controlled oscillatorWESTERN DIGITAL CORP·Filed 1989·Granted Jun 30, 1992·69 cites·3 claims
- 1490US5471478AFlash EEPROM array data and header file structureSUNDISK CORP·Filed 1995·Granted Nov 28, 1995·158 cites·11 claims
- 1587US4809088AIntegrated system for implementation of read window margining and write precompensaton in disk drivesWESTERN DIGITAL CORP·Filed 1986·Granted Feb 28, 1989·36 cites·12 claims
- 1686US4893030ABiasing circuit for generating precise currents in an integrated circuitWESTERN DIGITAL CORP·Filed 1988·Granted Jan 9, 1990·51 cites·36 claims
- 1784US4704587ACrystal oscillator circuit for fast reliable start-upWESTERN DIGITAL CORP·Filed 1986·Granted Nov 3, 1987·43 cites·8 claims
- 1883US5278702AData synchronizer with symmetric window generationWESTERN DIGITAL CORP·Filed 1991·Granted Jan 11, 1994·36 cites·15 claims
- 1974US4667170AVoltage controlled oscillator with self-adjustment of operating pointWESTERN DIGITAL CORP·Filed 1985·Granted May 19, 1987·24 cites·16 claims
- 2071US4797575AFlip-flop with identical propagation delay in clock pass through mode and in normal operationWESTERN DIGITAL CORP·Filed 1986·Granted Jan 10, 1989·18 cites·4 claims
- 2166US4871979AVariable frequency system having linear combination of charge pump and voltage controlled oscillatorWESTERN DIGITAL CORP·Filed 1987·Granted Oct 3, 1989·19 cites·7 claims
- 2257US8125834B2Device and method for controlling solid-state memory systemLOFGREN KARL M J·Filed 2009·Granted Feb 28, 2012·2 cites·42 claims
- 2354US7688643B2Device and method for controlling solid-state memory systemSANDISK CORP·Filed 2004·Granted Mar 30, 2010·4 cites·11 claims
- 2450US4716383APrecise phase start-up voltage controlled oscillator with accurate duty cycleWESTERN DIGITAL CORP·Filed 1986·Granted Dec 29, 1987·8 cites·14 claims
- 2548US2004168014A1Device and method for controlling solid-state memory systemFiled 2004·Application pending·0 cites
- 2639US2008162798A1Wear leveling techniques for flash eeprom systemsLOFGREN KARL M J·Filed 2008·Application pending·0 cites
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