Granted Patent
Utility
US 6,478,865 · App. 09/824,885
High surface area aggregated pigments
Inventors:
Prakash B. Malla, Siva Devisetti
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Aug 3, 2001
Inventors
Prakash B. Malla
Siva Devisetti
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.