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K. Trent Christensen
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Boise, ID, US
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Patents Grants
last 30 patents
Information
Patent Grant
Storage of printing device usage data on a printing device replacea...
Patent number
6,808,255
Issue date
Oct 26, 2004
Hewlett-Packard Development Company, L.P.
Robert E. Haines
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Methods and devices for spacing components of an electrophotographi...
Patent number
6,665,507
Issue date
Dec 16, 2003
Hewlett-Packard Development Company, L.P.
Howard G. Hooper
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Clear toner for conditioning of development systems
Patent number
6,580,890
Issue date
Jun 17, 2003
Hewlett-Packard Development Company, L.P.
Quintin T. Phillips
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Dynamic adjustment of characteristics of an image forming apparatus
Patent number
5,999,761
Issue date
Dec 7, 1999
Hewlett-Packard Company
Andrew J. Binder
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Anti-fraud pull tab system for printing products
Patent number
5,946,520
Issue date
Aug 31, 1999
Hewlett-Packard Company
Howard G. Hooper
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming and office automation device consumable with memory
Patent number
5,930,553
Issue date
Jul 27, 1999
Hewlett-Packard Company
B. Mark Hirst
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus for dispensing toner in an electrophotographic printing s...
Patent number
5,887,232
Issue date
Mar 23, 1999
Hewlett-Packard Company
Quintin T. Phillips
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner powder level sensing using element and pulse signal and toner...
Patent number
5,862,431
Issue date
Jan 19, 1999
Hewlett-Packard Company
K. Trent Christensen
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Fusable life indicator and identification device for an electrophot...
Patent number
5,758,224
Issue date
May 26, 1998
Hewlett-Packard Company
Andrew J. Binder
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming device with end of life messaging for consumables
Patent number
5,682,140
Issue date
Oct 28, 1997
Hewlett-Packard Company
K. Trent Christensen
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Charging member and image forming member spacer apparatus
Patent number
5,666,608
Issue date
Sep 9, 1997
Hewlett-Packard Company
K. Trent Christensen
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Refurbished toner cartridge
Patent number
5,392,963
Issue date
Feb 28, 1995
Hewlett-Packard Company
Gar P. Kelly
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and system for identifying the type of toner print cartridge...
Patent number
5,289,242
Issue date
Feb 22, 1994
Hewlett-Packard
K. Trent Christensen
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Clear toner for conditioning of development systems
Publication number
20030086726
Publication date
May 8, 2003
Quintin T. Phillips
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY