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Inventor

COLLINS DOUGLAS M

US6 patents
⚠️ This page may combine multiple inventors who share the name “COLLINS DOUGLAS M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEWLETT PACKARD CO

3 patents
US6491377B1Dec 10, 2002

High print quality printhead

HEWLETT PACKARD CO93 citations97
US6231168B1May 15, 2001

Ink jet print head with flow control manifold shape

HEWLETT PACKARD CO17 citations92
US6132033AOct 17, 2000

Inkjet print head with flow control manifold and columnar structures

HEWLETT PACKARD CO37 citations92

HEWLETT PACKARD DEVELOPMENT CO

2 patents
US6799822B2Oct 5, 2004

High quality fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO19 citations92
US6662435B1Dec 16, 2003

Method of manufacturing an ink jet print head

HEWLETT PACKARD DEVELOPMENT CO0 citations52

HEWLETT PACKARD DEVELOPMENT LP

1 patent
US7004556B2Feb 28, 2006

High print quality inkjet printhead

HEWLETT PACKARD DEVELOPMENT LP3 citations62