Inventor
NIELSEN NIELS J
11 patents
Patents
11 patentsUS4882595ANov 21, 1989
Hydraulically tuned channel architecture
HEWLETT PACKARD CO182 citations98
US4677447AJun 30, 1987
Ink jet printhead having a preloaded check valve
HEWLETT PACKARD CO204 citations98
US5682186AOct 28, 1997
Protective capping apparatus for an ink-jet pen
HEWLETT PACKARD CO326 citations97
US5635968AJun 3, 1997
Thermal inkjet printer printhead with offset heater resistors
HEWLETT PACKARD CO171 citations97
US5418558AMay 23, 1995
Determining the operating energy of a thermal ink jet printhead using an onboard thermal sense resistor
HEWLETT PACKARD CO78 citations96
US4931811AJun 5, 1990
Thermal ink jet pen having a feedtube with improved sizing and operational with a minimum of depriming
HEWLETT PACKARD CO102 citations96
US4528577AJul 9, 1985
Ink jet orifice plate having integral separators
HEWLETT PACKARD CO66 citations95
US5040002AAug 13, 1991
Regulator for ink-jet pens
HEWLETT PACKARD CO176 citations94
US5459498AOct 17, 1995
Ink-cooled thermal ink jet printhead
HEWLETT PACKARD CO58 citations92
USD314209SJan 29, 1991
Ink-jet print cartridge
HEWLETT PACKARD CO22 citations92
US5657061AAug 12, 1997
Ink-cooled thermal ink jet printhead
HEWLETT PACKARD CO37 citations88