Granted Patent
Utility
US 5,312,848 · App. 07/935,799
Thermoformable polyisocyanurate foam laminates for interior finishing applications
Inventors:
Kenneth P. Klapper, Wayne E. Laughlin, John P. Oliver
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Aug 27, 1992
Inventors
Kenneth P. Klapper
Wayne E. Laughlin
John P. Oliver
Assignee (at issue)
Celotex Corporation
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.