Granted Patent
Utility
US 5,274,010 · App. 07/726,055
Process for warp-free pigmenting of polyolefins
Inventors:
Philippe Bugnon, Fritz Herren
Patented Case
View Patent ↗
Granted: Dec 28, 1993
Filed: Jul 5, 1991
Inventors
Philippe Bugnon
Fritz Herren
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.