Inventor · disambiguated record
K. Trent Christensen
Also filed as: CHRISTENSEN K TRENT
14 granted patents·658 citations·filing 1992–2002
95Inventor score
Top patents by PatentIndex Score
14 records- 0198US5930553AImage forming and office automation device consumable with memoryHEWLETT PACKARD CO·Filed 1997·Granted Jul 27, 1999·232 cites·10 claims
- 0293US6808255B1Storage of printing device usage data on a printing device replaceable componentHEWLETT PACKARD DEVELOPMENT CO·Filed 2000·Granted Oct 26, 2004·65 cites·15 claims
- 0393US6665507B1Methods and devices for spacing components of an electrophotographic printerHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Dec 16, 2003·55 cites·35 claims
- 0489US5666608ACharging member and image forming member spacer apparatusHEWLETT PACKARD CO·Filed 1996·Granted Sep 9, 1997·52 cites·20 claims
- 0589US5289242AMethod and system for identifying the type of toner print cartridges loaded into electrophotographic printersHEWLETT PACKARD CO·Filed 1992·Granted Feb 22, 1994·42 cites·11 claims
- 0688US5758224AFusable life indicator and identification device for an electrophotographic consumable productHEWLETT PACKARD CO·Filed 1996·Granted May 26, 1998·49 cites·19 claims
- 0784US5682140AImage forming device with end of life messaging for consumablesHEWLETT PACKARD CO·Filed 1996·Granted Oct 28, 1997·58 cites·4 claims
- 0871US5999761ADynamic adjustment of characteristics of an image forming apparatusHEWLETT PACKARD CO·Filed 1998·Granted Dec 7, 1999·21 cites·8 claims
- 0968US5862431AToner powder level sensing using element and pulse signal and toner powder presence sensing using piezoelectric filmHEWLETT PACKARD CO·Filed 1997·Granted Jan 19, 1999·20 cites·20 claims
- 1067US5392963ARefurbished toner cartridgeHEWLETT PACKARD CO·Filed 1993·Granted Feb 28, 1995·19 cites·11 claims
- 1162US5946520AAnti-fraud pull tab system for printing productsHEWLETT PACKARD CO·Filed 1997·Granted Aug 31, 1999·15 cites·12 claims
- 1260US6580890B2Clear toner for conditioning of development systemsHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Jun 17, 2003·7 cites·12 claims
- 1357US5887232AApparatus for dispensing toner in an electrophotographic printing systemHEWLETT PACKARD CO·Filed 1995·Granted Mar 23, 1999·13 cites·21 claims
- 1444US6307584B1Single polygon scanner for multiple laser printerHEWLETT PACKARD CO·Filed 1999·Granted Oct 23, 2001·10 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →