Granted Patent
Utility
US 6,090,913 · App. 08/826,258
Transesterification and other conversion reactions of acid derivatives, using an amidine base
Inventors:
Karlheinz Drauz, Thomas Muller, Matthias Kottenhahn, Dieter Seebach, Adrian Thaler
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Mar 27, 1997
Inventors
Karlheinz Drauz
Thomas Muller
Matthias Kottenhahn
Dieter Seebach
Adrian Thaler
Assignee (at issue)
Degussa-Huels 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.