Inventor
CHANG CHARLES C
TW12 patents
⚠️ This page may combine multiple inventors who share the name “CHANG CHARLES C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IND TECH RES INST
11 patentsUS6666545B2Dec 23, 2003
Driver transistor structure of inkjet print head chip and the method for making the same
IND TECH RES INST20 citations92
US6382773B1May 7, 2002
Method and structure for measuring temperature of heater elements of ink-jet printhead
IND TECH RES INST44 citations92
US6543887B2Apr 8, 2003
Inkjet print head
IND TECH RES INST21 citations91
US6412918B1Jul 2, 2002
Back-shooting inkjet print head
IND TECH RES INST43 citations91
US6378978B1Apr 30, 2002
Chip structure of inkjet printhead and method of estimating working life through detection of defects
IND TECH RES INST25 citations89
US6364474B1Apr 2, 2002
Pressure control device
IND TECH RES INST10 citations73
US6409324B1Jun 25, 2002
Method and apparatus for supplying ink to an printhead
IND TECH RES INST6 citations62
US6478397B2Nov 12, 2002
Method of arranging orifices on a print head and the corresponding structure
IND TECH RES INST4 citations61
US6402286B1Jun 11, 2002
Function test device for optical print head heaters in thermal bubble printers
IND TECH RES INST5 citations61
US6811240B2Nov 2, 2004
Manufacturing method for an ID circuit of inkjet chips
IND TECH RES INST0 citations50
US6457808B1Oct 1, 2002
Multi-color level inkjet head chip structure
IND TECH RES INST0 citations34