Granted Patent
Utility
US 4,482,490 · App. 06/447,476
N-(p-nitrophenyl)-N'-(4-amino-2-fluorotriazineamino phenyl)-1,4-disazophenylene dyes
Inventors:
Seiichi Imahori, Toshio Niwa, Itaru Okada, Kuninori Sato
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Dec 6, 1982
Inventors
Seiichi Imahori
Toshio Niwa
Itaru Okada
Kuninori Sato
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.