Granted Patent
Utility
US 5,445,888 · App. 08/177,713
Hydrazine compound, process for the preparation of the same, and nonlinear optical organic material
Inventors:
Tsuneaki Koike, Hideo Hama, Tooru Yamanaka
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Jan 5, 1994
Inventors
Tsuneaki Koike
Hideo Hama
Tooru Yamanaka
Assignee (at issue)
Mitsui Petrochemical 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.