Granted Patent
Utility
US 5,213,840 · App. 07/713,638
Method for improving adhesion to polymide surfaces
Inventors:
Richard C. Retallick, Raymond A. Letize, Peter Kukanskis
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Jun 10, 1991
Inventors
Richard C. Retallick
Raymond A. Letize
Peter Kukanskis
Assignee (at issue)
MacDermid, Incorporated
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.