Granted Patent
Utility
US 5,543,564 · App. 08/371,153
Process for releasing acidic organic compounds from salts thereof by carbon dioxide
Inventors:
J urgen Kulpe, Heinz Strutz, Hans-Martin R uffer, Siegbert Rittner
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Jan 11, 1995
Inventors
J urgen Kulpe
Heinz Strutz
Hans-Martin R uffer
Siegbert Rittner
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.