Granted Patent
Utility
US 6,790,893 · App. 10/188,922
Compound of intumescent powder and thermoplastic material
Inventors:
Dat. T. Nguyen, Kevin B. Langille, Dwight E. Veinot, Jorgen O. Bernt
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Jul 5, 2002
Inventors
Dat. T. Nguyen
Kevin B. Langille
Dwight E. Veinot
Jorgen O. Bernt
Assignee (at issue)
PYROPHOBIC SYSTEMS, LTD.
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.