Granted Patent
Utility
US 4,665,103 · App. 06/883,418
Process for producing modified styrenic polymer beads for high strength foamed articles
Inventor:
Adolph V. DiGiulio
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Jul 8, 1986
Inventor
Adolph V. DiGiulio
Assignee (at issue)
Atlantic Richfield Company
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.