Granted Patent
Utility
US 5,182,409 · App. 07/613,554
Preparation process of bis(1,2-diaryl-1,2-ethyolenedithiolato)nickel-based complex
Inventors:
Keisuke Takuma, Yoshihiro Irizato, Kimitoshi Katho
Patented Case
View Patent ↗
Granted: Jan 26, 1993
Filed: Nov 15, 1990
Inventors
Keisuke Takuma
Yoshihiro Irizato
Kimitoshi Katho
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.