Inventor
HUNT DAVID S
US34 patents
⚠️ This page may combine multiple inventors who share the name “HUNT DAVID S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD CO
19 patentsUS6000791ADec 14, 1999
Printer having a removable print cartridge with handle incorporating an ink inlet value
HEWLETT PACKARD CO91 citations97
US5751320AMay 12, 1998
Ink recharger for inkjet print cartridge having sliding valve connectable to print cartridge
HEWLETT PACKARD CO133 citations97
US5903292AMay 11, 1999
Ink refill techniques for an inkjet print cartridge which leave correct back pressure
HEWLETT PACKARD CO77 citations96
US5675367AOct 7, 1997
Inkjet print cartridge having handle which incorporates an ink fill port
HEWLETT PACKARD CO93 citations96
US5359353AOct 25, 1994
Spring-bag printer ink cartridge with volume indicator
HEWLETT PACKARD CO83 citations95
US5874976AFeb 23, 1999
Inkjet cartridge fill port adapter
HEWLETT PACKARD CO63 citations94
US5621445AApr 15, 1997
Apparatus for refilling ink cartridges
HEWLETT PACKARD CO123 citations94
US5440333AAug 8, 1995
Collapsible ink reservoir and ink-jet cartridge with protective bonding layer for the pressure regulator
HEWLETT PACKARD CO59 citations93
US5966156AOct 12, 1999
Refilling technique for inkjet print cartridge having two ink inlet ports for initial filling and recharging
HEWLETT PACKARD CO34 citations92
US5963238AOct 5, 1999
Intermittent refilling of print cartridge installed in an inkjet printer
HEWLETT PACKARD CO26 citations92
US5852458ADec 22, 1998
Inkjet print cartridge having a first inlet port for initial filling and a second inlet port for ink replenishment without removing the print cartridge from the printer
HEWLETT PACKARD CO25 citations92
US5793387AAug 11, 1998
Method and apparatus for ink-jet ink level detection
HEWLETT PACKARD CO25 citations92
US5777648AJul 7, 1998
Inkjet print cartridge having an ink fill port for initial filling and a recharge port with recloseable seal for recharging the print cartridge with ink
HEWLETT PACKARD CO28 citations92
US5748216AMay 5, 1998
Inkjet print cartridge having valve connectable to an external ink reservoir for recharging the print cartridge
HEWLETT PACKARD CO32 citations92
US5434603AJul 18, 1995
Ink cartridge with passageway for ink level indicator
HEWLETT PACKARD CO27 citations92
US6224192B1May 1, 2001
Inkjet printing systems using a modular print cartridge assembly
HEWLETT PACKARD CO51 citations90
US6065826AMay 23, 2000
Modular print cartridge receptacle for use in inkjet printing systems
HEWLETT PACKARD CO44 citations90
US5929883AJul 27, 1999
Printing system with single on/off control valve for periodic ink replenishment of inkjet printhead
HEWLETT PACKARD CO34 citations90
US5596358AJan 21, 1997
Method and apparatus for refilling a print cartridge having a reservoir pressure of less than ambient pressure
HEWLETT PACKARD CO7 citations69
PROCTER & GAMBLE
10 patentsUS9808812B2Nov 7, 2017
Microfluidic delivery system
PROCTER & GAMBLE23 citations94
US9211980B1Dec 15, 2015
Microfluidic delivery system for releasing fluid compositions
PROCTER & GAMBLE36 citations94
US9814098B2Nov 7, 2017
Microfluidic delivery system for releasing fluid compositions
PROCTER & GAMBLE6 citations84
US9554459B2Jan 24, 2017
Microfluidic delivery system for releasing fluid compositions
PROCTER & GAMBLE12 citations84
US9278150B2Mar 8, 2016
Method of delivering a dose of a fluid composition from a microfluidic delivery cartridge
PROCTER & GAMBLE17 citations82
US10780192B2Sep 22, 2020
Microfluidic delivery cartridges and methods of connecting cartridges with microfluidic delivery systems
PROCTER & GAMBLE3 citations73
US10076585B2Sep 18, 2018
Method of delivering a dose of a fluid composition from a microfluidic delivery cartridge
PROCTER & GAMBLE4 citations73
US10040090B2Aug 7, 2018
Microfluidic delivery system for releasing fluid compositions
PROCTER & GAMBLE2 citations71
US9433696B2Sep 6, 2016
Microfluidic delivery system for releasing fluid compositions
PROCTER & GAMBLE3 citations71
US11000862B2May 11, 2021
Microfluidic delivery system
PROCTER & GAMBLE0 citations62