Granted Patent
Utility
US 6,759,447 · App. 10/338,184
Physical properties of polyurethane foams using tertiary amino alkyl amide catalysts
Inventors:
Juan Jesus Burdeniuc, Mark Leo Listemann
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Jan 6, 2003
Inventors
Juan Jesus Burdeniuc
Mark Leo Listemann
Assignee (at issue)
Air Products and Chemicals, Inc.
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.