Inventor

HSIEH SHU-CHENG

TW3 patents

Patents

3 patents

US6186620B1Feb 13, 2001

Ink pressure control apparatus for ink-jet pens

IND TECH RES INST46 citations91

US6540341B2Apr 1, 2003

Pressure controller for an ink cartridge

IND TECH RES INST18 citations82

US6431775B1Aug 13, 2002

Automatic print cartridge alignment system

IND TECH RES INST7 citations63