Granted Patent
Utility
US 4,478,627 · App. 06/399,085
Recuperation of heat absorbent media to preheat combustion gases and glass batch
Inventors:
Charles M. Hohman, Mark A. Propster, Charles S. Dunn, Stephen Seng
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Jul 16, 1982
Inventors
Charles M. Hohman
Mark A. Propster
Charles S. Dunn
Stephen Seng
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.