Granted Patent
Utility
US 6,596,803 · App. 09/896,961
Layered clay intercalates and exfoliates having a low quartz content
Inventors:
Tie Lan, Vasiliki Psihogios, Shriram Bagrodia, Louis Thomas Germinario, John Walker Gilmer
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Jun 29, 2001
Inventors
Tie Lan
Vasiliki Psihogios
Shriram Bagrodia
Louis Thomas Germinario
John Walker Gilmer
Assignee (at issue)
AMCOL INTERNATIONAL 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.