Granted Patent
Utility
US 6,013,703 · App. 08/822,563
Stabilizer combination for chlorine-containing polymers
Inventors:
Karl-Josef Kuhn, Wolfgang Wehner, Horst Zinke
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: Mar 19, 1997
Inventors
Karl-Josef Kuhn
Wolfgang Wehner
Horst Zinke
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.