Granted Patent
Utility
US 4,452,929 · App. 06/530,460
Water reducible epoxy based coating compositions
Inventors:
Edward J. Powers, Thomas E. Walsh, Donald R. Stewart
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Sep 9, 1983
Inventors
Edward J. Powers
Thomas E. Walsh
Donald R. Stewart
Assignee (at issue)
Celanese GmbH
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.