Granted Patent
Utility
US 5,503,821 · App. 08/070,260
Methods for recovering high grade process energy from a contact sulfuric acid process
Inventors:
Donald R. McAlister, Daniel Schneider
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Jun 2, 1993
Inventors
Donald R. McAlister
Daniel Schneider
Assignee (at issue)
Monsanto 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.