Granted Patent
Utility
US 5,354,906 · App. 08/016,917
Aqueous liquid solution of a betaine with a solids content of at least 40% by weight
Inventors:
Christian Weitemeyer, Willi Foitzik, Hans-Dieter Kaseborn, Burghard Gruning, Uwe Begoihn
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Feb 12, 1993
Inventors
Christian Weitemeyer
Willi Foitzik
Hans-Dieter Kaseborn
Burghard Gruning
Uwe Begoihn
Assignee (at issue)
Th. Goldschmidt. 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.