Granted Patent
Utility
US 6,030,939 · App. 09/266,365
Aqueous preparations containing betaines based on polymeric fatty acids
Inventor:
Burghard Gruning
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Mar 11, 1999
Inventor
Burghard Gruning
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.