Granted Patent
Utility
US 6,780,356 · App. 09/662,929
Method for producing an inorganic foam structure for use as a durable acoustical panel
Inventors:
Dean L. Putt, John J. Hartman, Jr., Chester W. Hallett, Andrea M. Moser
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Sep 15, 2000
Inventors
Dean L. Putt
John J. Hartman, Jr.
Chester W. Hallett
Andrea M. Moser
Assignee (at issue)
AWI Licensing 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.