Granted Patent
Utility
US 4,649,063 · App. 06/731,978
Method for waterproofing silica-ceramic insulation bodies
Inventors:
Levy A. Canova, Ralph J. DePasquale, Michael E. Wilson
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: May 8, 1985
Inventors
Levy A. Canova
Ralph J. DePasquale
Michael E. Wilson
Assignee (at issue)
SCM Consultants, Inc.
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.