Granted Patent
Utility
US 6,737,517 · App. 10/216,290
Metal chelated azo dyestuff for inkjet recording and recording liquid for inkjet and inkjet recording method using same
Inventor:
Wataru Shimizu
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Aug 12, 2002
Inventor
Wataru Shimizu
Assignee (at issue)
MITSUBISHI CHEMICAL CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.