Granted Patent
Utility
US 5,444,101 · App. 08/212,634
Process for rigid polyurethane foams
Inventors:
Rik De Vos, Guy Leon Jean Ghislain Biesmans
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Mar 11, 1994
Inventors
Rik De Vos
Guy Leon Jean Ghislain Biesmans
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.