Granted Patent
Utility
US 6,761,763 · App. 10/185,263
Process for compacting calcined kaolin clay
Inventors:
William H. Wiggins, Sr., Andrea L. Crabb, William Wiggins
Patented Case
View Patent ↗
Granted: Jul 13, 2004
Filed: Jun 26, 2002
Inventors
William H. Wiggins, Sr.
Andrea L. Crabb
William Wiggins
Assignee (at issue)
Thiele Kaolin Company
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.