Granted Patent
Utility
US 5,498,641 · App. 08/224,879
Polymerizable composition containing pyrromethene type coloring matter and titanocene compound
Inventors:
Toshiyuki Urano, Hideki Nagasaka, Masaaki Tsuchiyama, Hiroshi Ide
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Apr 8, 1994
Inventors
Toshiyuki Urano
Hideki Nagasaka
Masaaki Tsuchiyama
Hiroshi Ide
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.