Granted Patent
Utility
US 5,709,892 · App. 08/620,611
System for producing a foamed isocyanate-based polymer
Inventor:
Paul V. Farkas
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Mar 22, 1996
Inventor
Paul V. Farkas
Assignee (at issue)
Woodbridge Foam 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.