Granted Patent
Utility
US 5,830,830 · App. 08/527,655
Use of acetal-containing mixtures
Inventors:
Martin Hille, Heinz Wittkus, Frank Weinelt
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Sep 13, 1995
Inventors
Martin Hille
Heinz Wittkus
Frank Weinelt
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.