Granted Patent
Utility
US 6,602,341 · App. 09/914,228
Treating kaolinitic clays
Inventor:
Christopher Stirling Hogg
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jan 2, 2002
Inventor
Christopher Stirling Hogg
Assignee (at issue)
IMERYS MINERALS LIMITED
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.