Granted Patent
Utility
US 6,551,396 · App. 09/891,275
Phosphate investment compositions
Inventors:
Rachel R. Pineda, Thomas C. Chadwick
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Jun 27, 2001
Inventors
Rachel R. Pineda
Thomas C. Chadwick
Assignee (at issue)
Den-Mat Holdings, 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.