Granted Patent
Utility
US 5,647,895 · App. 08/603,058
Reduction of microorganisms in kaolin clay slurries
Inventors:
Sharon M. Drew, Jeffrey C. Bruns, Jessica E. Kogel
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Feb 20, 1996
Inventors
Sharon M. Drew
Jeffrey C. Bruns
Jessica E. Kogel
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.