Granted Patent
Utility
US 4,125,508 · App. 05/877,627
Method of making a flocculant composition
Inventor:
Gunther H. Elfers
Patented Case
View Patent ↗
Granted: Nov 14, 1978
Filed: Feb 14, 1978
Inventor
Gunther H. Elfers
Assignee (at issue)
BASF Wyandotte Corporation
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.