Assignee
HOWTEK INC
US21 patents
Top patents by PatentIndex Score
US6606171B1Aug 12, 2003
Digitizing scanner
HOWTEK INC239 citations97
US4741930AMay 3, 1988
Ink jet color printing method
HOWTEK INC59 citations95
US4721635AJan 26, 1988
Color printed record and method
HOWTEK INC64 citations94
US4820346AApr 11, 1989
Ink jet printer ink
HOWTEK INC45 citations93
US4870430ASep 26, 1989
Solid ink delivery system
HOWTEK INC68 citations92
US5237172AAug 17, 1993
Calibrated color scanner with reference level adjustment
HOWTEK INC34 citations91
US4666757AMay 19, 1987
Color printed record
HOWTEK INC39 citations91
US4714936ADec 22, 1987
Ink jet printer
HOWTEK INC50 citations88
US6105954AAug 22, 2000
Sheet feeder for digitizing scanner
HOWTEK INC29 citations87
US4931095AJun 5, 1990
Benzoate inks
HOWTEK INC28 citations86
US4870431ASep 26, 1989
Ink jet priming system
HOWTEK INC23 citations81
US4591281AMay 27, 1986
Sheet-feed mechanism for rotary print head
HOWTEK INC21 citations80
US5196236AMar 23, 1993
Ink jet color printing method
HOWTEK INC11 citations73
US5424537AJun 13, 1995
Calibrated color scanner
HOWTEK INC13 citations72
US4928112AMay 22, 1990
Ink curing apparatus
HOWTEK INC18 citations72
US5084712AJan 28, 1992
Head tending method and apparatus for an ink jet printer
HOWTEK INC13 citations71
US4968994ANov 6, 1990
Head tending apparatus for an ink jet printer
HOWTEK INC11 citations71
US6023348AFeb 8, 2000
Rotary image scanner capable of mounting drums of various diameters
HOWTEK INC9 citations68
US5367769ANov 29, 1994
Method of manufacturing a rotary scanning drum
HOWTEK INC8 citations67
US5515182AMay 7, 1996
Rotary scanner
HOWTEK INC6 citations62
US4974070ANov 27, 1990
Colorgraphic reproduction system
HOWTEK INC4 citations54