Granted Patent
Utility
US 4,197,351 · App. 05/932,631
Metal-pigmented plastic powder
Inventors:
Rolf Rolles, James E. Williams, Thomas J. Kondis
Patented Case
View Patent ↗
Granted: Apr 8, 1980
Filed: Aug 10, 1978
Inventors
Rolf Rolles
James E. Williams
Thomas J. Kondis
Assignee (at issue)
Aluminum Company of America
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.