Granted Patent
Utility
US 5,167,830 · App. 07/670,051
Dicyanadiamide formaldehyde paint detackifier
Inventor:
Charles Ficker
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Mar 15, 1991
Inventor
Charles Ficker
Assignee (at issue)
DIVERSEY, INC.
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.