Granted Patent
Utility
US 4,297,480 · App. 06/083,142
Transparent polyamide from branched chain C.sub.11 diamine
Inventors:
Josef Pfeifer, Dieter Reinehr
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Oct 9, 1979
Inventors
Josef Pfeifer
Dieter Reinehr
Assignee (at issue)
Giba-Geigy Corporation
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.