Inventor
ARNOLD CHRISTOPHER JOHN
US13 patents
Patents
13 patentsUS11267254B2Mar 8, 2022
Fluid recirculation within printing device reservoir via extraction pump and supply pump
HEWLETT PACKARD DEVELOPMENT CO3 citations70
US10569561B2Feb 25, 2020
Valves for fluid ejection devices
HEWLETT PACKARD DEVELOPMENT CO2 citations70
US11467017B2Oct 11, 2022
Sensing rods with tips for fluid detection
HEWLETT PACKARD DEVELOPMENT CO2 citations66
US11590762B2Feb 28, 2023
Recirculations using two pumps
HEWLETT PACKARD DEVELOPMENT CO0 citations62
US11312142B2Apr 26, 2022
Printing devices with removeable extraction reservoirs
HEWLETT PACKARD DEVELOPMENT CO0 citations61
US12214598B2Feb 4, 2025
Fluid extraction via removable extraction reservoirs
HEWLETT PACKARD DEVELOPMENT CO0 citations59
US11597206B2Mar 7, 2023
Purging manifolds
HEWLETT PACKARD DEVELOPMENT CO0 citations59
US11427012B2Aug 30, 2022
Negative pressure recovery of printing agents
HEWLETT PACKARD DEVELOPMENT CO1 citations57
US11413874B2Aug 16, 2022
Extraction reservoir-triggered fluid extraction
HEWLETT PACKARD DEVELOPMENT CO0 citations57
US11312151B2Apr 26, 2022
Fluid extraction using fill pump activation
HEWLETT PACKARD DEVELOPMENT CO0 citations57
US11241875B2Feb 8, 2022
Vented reservoirs with floats for print agents
HEWLETT PACKARD DEVELOPMENT CO0 citations56
US11358394B2Jun 14, 2022
Print reservoir venting
HEWLETT PACKARD DEVELOPMENT CO0 citations49
US11065894B2Jul 20, 2021
Engageable fluid interface members and connectors
HEWLETT PACKARD DEVELOPMENT CO0 citations49