Granted Patent
Utility
US 6,402,827 · App. 09/522,542
Paper or paper board coating composition containing a structured clay pigment
Inventors:
Gary M. Freeman, Sung-Tsuen Liu
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Mar 10, 2000
Inventors
Gary M. Freeman
Sung-Tsuen Liu
Assignee (at issue)
J.M. Huber Corporation
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.