Granted Patent
Utility
US 5,779,859 · App. 08/766,260
Method of improving filler retention in papermaking
Inventors:
Richard Douglas Carter, Britt Ciccrchi
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Dec 13, 1996
Inventors
Richard Douglas Carter
Britt Ciccrchi
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.