Granted Patent
Utility
US 6,005,016 · App. 09/166,977
Rigid polyurethane foam based on polyethers of TDA
Inventors:
Neil H. Nodelman, David D. Steppan, John W. Jenny, Peter Gansen
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Oct 6, 1998
Inventors
Neil H. Nodelman
David D. Steppan
John W. Jenny
Peter Gansen
Assignee (at issue)
Bayer Aktiengesellschaft
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.