Granted Patent
Utility
US 6,491,853 · App. 08/744,571
Storage-stable plastics additives
Inventors:
Karl Gaa, Günter Nowy, Gerhard Pfahler, Matthias Zäh
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Nov 6, 1996
Inventors
Karl Gaa
Günter Nowy
Gerhard Pfahler
Matthias Zäh
Assignee (at issue)
Clariant Corporation
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.