Granted Patent
Utility
US 6,156,830 · App. 09/323,778
5-substituted 6-aminouracils as stabilizers for halogenated polymers
Inventors:
Wolfgang Wehner, Hans-Helmut Friedrich
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Jun 1, 1999
Inventors
Wolfgang Wehner
Hans-Helmut Friedrich
Assignee (at issue)
Witco Vinyl Additives GmbH
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.