Granted Patent
Utility
US 4,358,464 · App. 05/933,605
Process for converting sour whey into sweet whey and product
Inventor:
Joseph A. Soehnlen
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Aug 14, 1978
Inventor
Joseph A. Soehnlen
Assignee (at issue)
Superior Dairy, Inc.
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.