Granted Patent
Utility
US 5,128,396 · App. 07/561,557
Coating compositions containing water-insoluble salts of keto-acids
Inventors:
Robert M. O'Neil, Emyr Phillips, Robert C. Wasson
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Aug 1, 1990
Inventors
Robert M. O'Neil
Emyr Phillips
Robert C. Wasson
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.