Inventor
DOUGHERTY PATRICK
US8 patents
⚠️ This page may combine multiple inventors who share the name “DOUGHERTY PATRICK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEWLETT PACKARD DEVELOPMENT CO
5 patentsUS6654576B2Nov 25, 2003
System for and method of reducing toner seal leakage by the introduction of a step groove in the developer roller
HEWLETT PACKARD DEVELOPMENT CO21 citations90
US6621996B1Sep 16, 2003
Magnetic toner use in a non-contact cleanerless system
HEWLETT PACKARD DEVELOPMENT CO21 citations86
US7221888B2May 22, 2007
Printing device cartridge having position in which rollers are separated from photoconductor
HEWLETT PACKARD DEVELOPMENT CO17 citations80
US7245389B2Jul 17, 2007
Burst mode for printing devices
HEWLETT PACKARD DEVELOPMENT CO7 citations72
US7555229B2Jun 30, 2009
Marking device and methods
HEWLETT PACKARD DEVELOPMENT CO0 citations43