Granted Patent
Utility
US 6,500,520 · App. 09/638,331
Particle coated bonding systems for hydratable cementitious composition casting and methods for making same
Inventors:
Robert A. Wiercinski, Jyoti Seth, Neal S. Berke, Paul J. Sandberg
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Aug 14, 2000
Inventors
Robert A. Wiercinski
Jyoti Seth
Neal S. Berke
Paul J. Sandberg
Assignee (at issue)
W.R. Grace & Co. Conn.
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.