Granted Patent
Utility
US 4,234,728 · App. 05/972,146
Polyalkylpiperidine derivatives of s-triazine
Inventors:
Jean Rody, Godwin Berner
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Dec 21, 1978
Inventors
Jean Rody
Godwin Berner
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.