P

Inventor

MCCLELLAND PAUL H

US52 patents
⚠️ This page may combine multiple inventors who share the name “MCCLELLAND PAUL H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEWLETT PACKARD CO

32 patents
US6017117AJan 25, 2000

Printhead with pump driven ink circulation

HEWLETT PACKARD CO463 citations99
US5469199ANov 21, 1995

Wide inkjet printhead

HEWLETT PACKARD CO275 citations99
US5278584AJan 11, 1994

Ink delivery system for an inkjet printhead

HEWLETT PACKARD CO381 citations99
US5387314AFeb 7, 1995

Fabrication of ink fill slots in thermal ink-jet printheads utilizing chemical micromachining

HEWLETT PACKARD CO287 citations98
US6470106B2Oct 22, 2002

Thermally induced pressure pulse operated bi-stable optical switch

HEWLETT PACKARD CO153 citations97
US5305015AApr 19, 1994

Laser ablated nozzle member for inkjet printhead

HEWLETT PACKARD CO153 citations97
US6135586AOct 24, 2000

Large area inkjet printhead

HEWLETT PACKARD CO107 citations96
US5648804AJul 15, 1997

Compact inkjet substrate with centrally located circuitry and edge feed ink channels

HEWLETT PACKARD CO61 citations96
US5420627AMay 30, 1995

Inkjet printhead

HEWLETT PACKARD CO65 citations96
US5408738AApr 25, 1995

Method of making a nozzle member including ink flow channels

HEWLETT PACKARD CO57 citations96
US5291226AMar 1, 1994

Nozzle member including ink flow channels

HEWLETT PACKARD CO93 citations96
US5608436AMar 4, 1997

Inkjet printer printhead having equalized shelf length

HEWLETT PACKARD CO73 citations95
US5417897AMay 23, 1995

Method for forming tapered inkjet nozzles

HEWLETT PACKARD CO86 citations95
US4528577AJul 9, 1985

Ink jet orifice plate having integral separators

HEWLETT PACKARD CO66 citations95
US4438191AMar 20, 1984

Monolithic ink jet print head

HEWLETT PACKARD CO115 citations95
US5635966AJun 3, 1997

Edge feed ink delivery thermal inkjet printhead structure and method of fabrication

HEWLETT PACKARD CO91 citations94
US5595785AJan 21, 1997

Orifice plate for an ink-jet pen

HEWLETT PACKARD CO51 citations94
US5442384AAug 15, 1995

Integrated nozzle member and tab circuit for inkjet printhead

HEWLETT PACKARD CO66 citations94
US6227660B1May 8, 2001

Printhead with pump driven ink circulation

HEWLETT PACKARD CO41 citations93
US6179414B1Jan 30, 2001

Ink delivery system for an inkjet printhead

HEWLETT PACKARD CO34 citations93
US5953029ASep 14, 1999

Ink delivery system for an inkjet printhead

HEWLETT PACKARD CO18 citations93
US5236572AAug 17, 1993

Process for continuously electroforming parts such as inkjet orifice plates for inkjet printers

HEWLETT PACKARD CO28 citations93
US4578687AMar 25, 1986

Ink jet printhead having hydraulically separated orifices

HEWLETT PACKARD CO55 citations93
US6179413B1Jan 30, 2001

High durability polymide-containing printhead system and method for making the same

HEWLETT PACKARD CO27 citations92
US5300959AApr 5, 1994

Efficient conductor routing for inkjet printhead

HEWLETT PACKARD CO46 citations92
US5718044AFeb 17, 1998

Assembly of printing devices using thermo-compressive welding

HEWLETT PACKARD CO23 citations91
US5378137AJan 3, 1995

Mask design for forming tapered inkjet nozzles

HEWLETT PACKARD CO38 citations91
US6520628B2Feb 18, 2003

Fluid ejection device with substrate having a fluid firing device and a fluid reservoir on a first surface thereof

HEWLETT PACKARD CO15 citations83
US6542217B2Apr 1, 2003

Scent storage device, ticket and passive sequential resistor array for use with same

HEWLETT PACKARD CO9 citations74
US5625396AApr 29, 1997

Ink delivery method for an inkjet print cartridge

HEWLETT PACKARD CO12 citations74
US6132025AOct 17, 2000

Assembly of printing devices using thermo-compressive welding

HEWLETT PACKARD CO6 citations72
US6402040B1Jun 11, 2002

Ticket and method of metering the use of a facility

HEWLETT PACKARD CO6 citations63

HEWLETT PACKARD DEVELOPMENT CO

11 patents

HEWLETT PACKARD CORP

4 patents

FOWLER NICHOLAS F

1 patent

KLINKHAMMER GARY P

1 patent

LEONI NAPOLEON J

1 patent

Showing the top 50 of 52 patents by PatentIndex Score.