Granted Patent
Utility
US 4,396,769 · App. 06/347,751
Process for preparing crystalline, non-dusting bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate
Inventors:
Anibal L. Ferreira, Robert E. Stahlbush
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Feb 11, 1982
Inventors
Anibal L. Ferreira
Robert E. Stahlbush
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.