Granted Patent
Utility
US 6,696,582 · App. 10/204,286
Method for producing aliphatic carboxylic acids from aldehydes
Inventors:
Helmut Springer, Peter Heymanns
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Sep 10, 2002
Inventors
Helmut Springer
Peter Heymanns
Assignee (at issue)
CELANESE CHEMICALS EUROPE 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.