Granted Patent
Utility
US 4,352,903 · App. 06/268,558
Chlorinated thermoplastics stabilized with aminothiouracils
Inventor:
Gerd Abeler
Patented Case
View Patent ↗
Granted: Oct 5, 1982
Filed: Jun 1, 1981
Inventor
Gerd Abeler
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.