Granted Patent
Utility
US 6,755,903 · App. 10/177,148
Metal chelated dyestuff for inkjet recording and aqueous inkjet recording liquid using the same
Inventors:
Masahiro Yamada, Tomio Yoneyama, Tomohiro Chino
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Jun 24, 2002
Inventors
Masahiro Yamada
Tomio Yoneyama
Tomohiro Chino
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.