Granted Patent
Utility
US 6,660,076 · App. 10/162,136
High performance kaolin pigment, a paper coating color containing high performance kaolin pigment, and a method for making high performance kaolin pigment
Inventors:
Maria Valadares, João Duarte Neto
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Jun 4, 2002
Inventors
Maria Valadares
João Duarte Neto
Assignee (at issue)
Companhia Vale do Rio Doce
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.