Granted Patent
Utility
US 4,260,462 · App. 05/909,861
Process for separating acid gases and ammonia from dilute aqueous solutions thereof
Inventors:
William J. Didycz, Donald Glassman, Edward E. Maier, George T. Saniga
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: May 26, 1978
Inventors
William J. Didycz
Donald Glassman
Edward E. Maier
George T. Saniga
Assignee (at issue)
United States Steel 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.