Inventor
HUBBARD DAVID W
US41 patents
⚠️ This page may combine multiple inventors who share the name “HUBBARD DAVID W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PITNEY BOWES INC
35 patentsUS4907013AMar 6, 1990
Circuitry for detecting malfunction of ink jet printhead
PITNEY BOWES INC146 citations98
US4680595AJul 14, 1987
Impulse ink jet print head and method of making same
PITNEY BOWES INC247 citations98
US4703333AOct 27, 1987
Impulse ink jet print head with inclined and stacked arrays
PITNEY BOWES INC80 citations96
US5709525AJan 20, 1998
Envelope stacker
PITNEY BOWES INC23 citations92
US5196083AMar 23, 1993
System and method for producing items in selected configurations
PITNEY BOWES INC32 citations92
US4778018AOct 18, 1988
Apparatus and method of determining the mass of an article by measuring the shift in the period of harmonic motion
PITNEY BOWES INC39 citations92
US4605939AAug 12, 1986
Ink jet array
PITNEY BOWES INC44 citations92
US4506344AMar 19, 1985
Hand held electronic postage meter having secure postage meter doors
PITNEY BOWES INC44 citations92
US4246643AJan 20, 1981
Low cost postage applicator
PITNEY BOWES INC31 citations92
US5675959AOct 14, 1997
Opening fingers for envelope inserting apparatus
PITNEY BOWES INC36 citations91
US5457636AOct 10, 1995
Postal finishing kiosk
PITNEY BOWES INC37 citations90
US5842800ADec 1, 1998
Multi function sensing device for printing apparatus
PITNEY BOWES INC39 citations89
US4848492AJul 18, 1989
Transporting and drive mechanism for a weighing scale
PITNEY BOWES INC25 citations86
US4635079AJan 6, 1987
Single element transducer for an ink jet device
PITNEY BOWES INC20 citations82
US4171744AOct 23, 1979
Document classifier
PITNEY BOWES INC23 citations82
US5806421ASep 15, 1998
Method and apparatus for securely printing a machine detectable postal indicia image
PITNEY BOWES INC8 citations74
US5014797AMay 14, 1991
Modular mailing machine
PITNEY BOWES INC18 citations74
US4903788AFeb 27, 1990
Vibrating tray scale with conveying mechanism
PITNEY BOWES INC9 citations74
US4836311AJun 6, 1989
Oscillating and locking apparatus and method for vibrating tray weighing scale
PITNEY BOWES INC7 citations74
US4836312AJun 6, 1989
Oscillating and locking apparatus and method for vibrating tray weighing scale
PITNEY BOWES INC7 citations74
US4027586AJun 7, 1977
Method for printing a manually scannable bar code and articles carrying a vertically extended bar code
PITNEY BOWES INC9 citations74
US4271786AJun 9, 1981
Electrophotocopier developer unit mounting system
PITNEY BOWES INC14 citations73
US4040346AAug 9, 1977
Label printing apparatus with tape cassette
PITNEY BOWES INC8 citations71
US4858525AAug 22, 1989
Postage meter having a worm gear drive and guiding sleeve
PITNEY BOWES INC8 citations70
US5354407AOct 11, 1994
Envelope flap moistening apparatus
PITNEY BOWES INC14 citations68
US5566932AOct 22, 1996
Apparatus and method for deskewing sheets
PITNEY BOWES INC2 citations63
US5383732AJan 24, 1995
Thermal printing postage dispensing device having security features and method of using
PITNEY BOWES INC5 citations63
US5082072AJan 21, 1992
Modular mailing machine
PITNEY BOWES INC2 citations63
US4923023AMay 8, 1990
Modular mailing machine
PITNEY BOWES INC5 citations63
US4856602AAug 15, 1989
Apparatus and method of weighing articles based upon harmonic motion
PITNEY BOWES INC5 citations63
US4852479AAug 1, 1989
Postage meter having a worm gear drive
PITNEY BOWES INC4 citations63
US4836313AJun 6, 1989
Oscillating and locking apparatus and method for vibrating tray weighing scale
PITNEY BOWES INC4 citations63
US4411328AOct 25, 1983
Low range automatic weighing device
PITNEY BOWES INC3 citations63
US4007984AFeb 15, 1977
Method and apparatus for handling a belt of photoconductive material
PITNEY BOWES INC2 citations63
US5769550AJun 23, 1998
Method and apparatus for securely printing an indicia image in multiple passes including an enhancement pass
PITNEY BOWES INC6 citations60