Granted Patent
Utility
US 5,759,963 · App. 08/116,483
Use of acetals
Inventors:
Martin Hille, Heinz Wittkus, Bernd Windhausen, Hans Scholz, Frank Weinelt
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Sep 3, 1993
Inventors
Martin Hille
Heinz Wittkus
Bernd Windhausen
Hans Scholz
Frank Weinelt
Assignee (at issue)
Hoechst 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.