Granted Patent
Utility
US 4,835,310 · App. 07/025,231
Reaction products of bisglycidyl thioethers
Inventors:
Hermann O. Wirth, Rainer Schneider, Hans-Helmut Friedrich
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Mar 12, 1987
Inventors
Hermann O. Wirth
Rainer Schneider
Hans-Helmut Friedrich
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.