Granted Patent
Utility
US 4,169,922 · App. 05/864,890
Rigid polyurethane foam-forming compositions
Inventors:
Jasper H. Brown, Albert W. Morgan, Donald S. T. Wang
Patented Case
View Patent ↗
Granted: Oct 2, 1979
Filed: Dec 27, 1977
Inventors
Jasper H. Brown
Albert W. Morgan
Donald S. T. Wang
Assignee (at issue)
Monsanto 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.