Granted Patent
Utility
US 6,835,757 · App. 10/724,887
Tertiary amino alkyl amide catalysts for improving the physical properties of polyurethane foams
Inventor:
Juan Jesus Burdeniuc
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Dec 2, 2003
Inventor
Juan Jesus Burdeniuc
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.