Granted Patent
Utility
US 4,246,099 · App. 06/027,801
Aerobic/anaerobic sludge digestion process
Inventors:
Michael Gould, Ladistas C. Motsch
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Apr 6, 1979
Inventors
Michael Gould
Ladistas C. Motsch
Assignee (at issue)
Union Carbide 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.