Granted Patent
Utility
US 5,840,941 · App. 08/646,879
Process for the preparation of flowable, anhydrous acyloxyalkanesulfonates and their use
Inventors:
Viliam Tittel, Dirk Buhring
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: May 8, 1996
Inventors
Viliam Tittel
Dirk Buhring
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.