Granted Patent
Utility
US 4,609,698 · App. 06/728,011
Oligoesters containing polyalkylpiperidine groups
Inventors:
Friedrich Karrer, Jean Rody
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Apr 26, 1985
Inventors
Friedrich Karrer
Jean Rody
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.