Granted Patent
Utility
US 6,284,327 · App. 09/352,020
Process for making a radiation cured cement board substrate
Inventors:
Paul Neumann, Donald P. Hart, Jr.
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jul 12, 1999
Inventors
Paul Neumann
Donald P. Hart, Jr.
Assignee (at issue)
Universal Woods Incorporated
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.