Granted Patent
Utility
US 5,405,980 · App. 08/021,823
Condensates and their use as oxyalkylation adjuvants
Inventor:
Hans-Peter Baumann
Patented Case
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Granted: Apr 11, 1995
Filed: Feb 24, 1993
Inventor
Hans-Peter Baumann
Assignee (at issue)
Sandoz AG
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.