Granted Patent
Utility
US 6,245,267 · App. 09/236,745
Methods for lowering the density and increasing the flexibility of thermoplastic foams
Inventors:
David W. Kreiser, Allan L. Dinkel, Juerg Weibel
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jan 25, 1999
Inventors
David W. Kreiser
Allan L. Dinkel
Juerg Weibel
Assignee (at issue)
Armacell, LLC
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.