Granted Patent
Utility
US 4,713,432 · App. 07/002,358
Solid solution of amine and polymerized phenol
Inventors:
Madan M. Bagga, Christopher Bull
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Jan 12, 1987
Inventors
Madan M. Bagga
Christopher Bull
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.