Granted Patent
Utility
US 4,535,145 · App. 06/626,507
Process for the preparation of polyesters from aliphatic dicarboxylic acids and polyalkylpiperidyl diols
Inventors:
Eduard Troxler, Thomas Kainmuller, Rudolf Maul
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Jun 29, 1984
Inventors
Eduard Troxler
Thomas Kainmuller
Rudolf Maul
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.