Granted Patent
Utility
US 6,221,921 · App. 09/417,396
Dispersant system and process for formulating non-aqueous siliceous particulate slurries
Inventors:
John L. Lombardi, Kevin Johnston, David Zackery Dent
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Oct 14, 1999
Inventors
John L. Lombardi
Kevin Johnston
David Zackery Dent
Assignee (at issue)
Advanced Ceramics Research, 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.