Granted Patent
Utility
US 4,368,317 · App. 06/262,571
Mixtures for the preparation of nitrogen-containing polyadducts
Inventors:
Friedrich Lohse, Dieter Trachsler
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: May 11, 1981
Inventors
Friedrich Lohse
Dieter Trachsler
Assignee (at issue)
Ciba-Geigy
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.