Granted Patent
Utility
US 4,294,936 · App. 06/142,691
Adhesive compositions
Inventor:
Ralf Korpman
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: May 5, 1980
Inventor
Ralf Korpman
Assignee (at issue)
Permacel
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.