Granted Patent
Utility
US 4,237,309 · App. 05/957,612
Method for the preparation of phenolic acetates and paraformaldehyde
Inventors:
James E. Lyons, George Suld, Robert W. Shinn
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Nov 3, 1978
Inventors
James E. Lyons
George Suld
Robert W. Shinn
Assignee (at issue)
SUNTEC CO., LTD.
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.