Granted Patent
Utility
US 4,663,202 · App. 06/691,561
Prevention of undesired adsorption on surfaces
Inventor:
Brian Edward Causton
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Jan 14, 1985
Inventor
Brian Edward Causton
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.