Granted Patent
Utility
US 6,528,446 · App. 09/678,583
Process for making clay spheroids
Inventor:
James C. Stensrud
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Oct 3, 2000
Inventor
James C. Stensrud
Assignee (at issue)
KINETICO INCORPORATED
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.