Granted Patent
Utility
US 4,960,871 · App. 07/313,316
Fiber-reactive halotriazine pyridine-based monoazo colorant
Inventors:
Toshio Hihara, Yukiharu Shimizu
Patented Case
View Patent ↗
Granted: Oct 2, 1990
Filed: Feb 17, 1989
Inventors
Toshio Hihara
Yukiharu Shimizu
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.