Granted Patent
Utility
US 4,239,996 · App. 05/582,066
Potassium carbonate recovery
Inventors:
Rohinton K. Bhada, Howard B. Lange, Stephen Strom
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: May 29, 1975
Inventors
Rohinton K. Bhada
Howard B. Lange
Stephen Strom
Assignee (at issue)
The Babcock & Wilcox Company
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.