Granted Patent
Utility
US 4,855,172 · App. 07/110,633
Adhesive composition laminate with butyl rubber
Inventor:
Jessie T. Chiu
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Oct 16, 1987
Inventor
Jessie T. Chiu
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.