Granted Patent
Utility
US 6,137,013 · App. 09/211,937
Method of stabilizing aldehydes
Inventors:
Michael Riedel, Wolfgang Zgorzelski, Michael Messerschmidt, Klaus Bergrath
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Dec 15, 1998
Inventors
Michael Riedel
Wolfgang Zgorzelski
Michael Messerschmidt
Klaus Bergrath
Assignee (at issue)
Celanese 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.