Granted Patent
Utility
US 4,226,689 · App. 06/043,551
Apparatus and process for electrically resolving emulsions
Inventors:
Weldon D. Mayse, Frederick D. Watson
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: May 29, 1979
Inventors
Weldon D. Mayse
Frederick D. Watson
Assignee (at issue)
Petrolite 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.