Granted Patent
Utility
US 6,726,807 · App. 09/649,413
Multi-phase calcium silicate hydrates, methods for their preparation, and improved paper and pigment products produced therewith
Inventor:
Vijay Mathur
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Aug 26, 2000
Inventor
Vijay Mathur
Assignee (at issue)
G.R. International, Inc. (A Washington 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.