Granted Patent
Utility
US 6,572,697 · App. 09/803,456
Fiber cement building materials with low density additives
Inventors:
James Gleeson, Kalynne H. Paradis, Brian P. Sloane, David L. Melmeth, Dean M. Seligman
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Mar 9, 2001
Inventors
James Gleeson
Kalynne H. Paradis
Brian P. Sloane
David L. Melmeth
Dean M. Seligman
Assignee (at issue)
James Hardie Research Pty Limited
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.