Inventor
HAGEN DAVID M
US15 patents
⚠️ This page may combine multiple inventors who share the name “HAGEN DAVID M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
12 patentsUS7874660B2Jan 25, 2011
Closure and connector for a supply container
HEWLETT PACKARD DEVELOPMENT CO9 citations83
US6969163B2Nov 29, 2005
Ink-reservoir vents and venting methods
HEWLETT PACKARD DEVELOPMENT CO9 citations73
US7344233B2Mar 18, 2008
Replaceable ink supply with ink channels
HEWLETT PACKARD DEVELOPMENT CO5 citations62
US7178907B2Feb 20, 2007
Fluid containment structure with coiled bag backpressure regulator
HEWLETT PACKARD DEVELOPMENT CO2 citations62
US7111930B2Sep 26, 2006
Fluid supply having a fluid absorbing material
HEWLETT PACKARD DEVELOPMENT CO2 citations62
US6981763B2Jan 3, 2006
Back-pressure generating fluid containment structure and method
HEWLETT PACKARD DEVELOPMENT CO3 citations62
US7722173B2May 25, 2010
Fluid container having a fluid absorbing material
HEWLETT PACKARD DEVELOPMENT CO2 citations61
US7802859B2Sep 28, 2010
Refilling a used ink cartridge
HEWLETT PACKARD DEVELOPMENT CO2 citations60
US11623450B2Apr 11, 2023
Output mechanism for a fluid container
HEWLETT PACKARD DEVELOPMENT CO0 citations56
US11858273B2Jan 2, 2024
Printing fluid container with removable cap
HEWLETT PACKARD DEVELOPMENT CO0 citations52
US10065425B2Sep 4, 2018
Printing fluid container
HEWLETT PACKARD DEVELOPMENT CO0 citations51
US7033010B2Apr 25, 2006
Ink delivery apparatus with collapsible ink chamber and method of use
HEWLETT PACKARD DEVELOPMENT CO0 citations49