Granted Patent
Utility
US 6,441,076 · App. 09/957,584
Multifunctional poly(vinyl alcohol) binder for fine particle size calcium carbonate pigment
Inventor:
John Richard Boylan
Patented Case
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Granted: Aug 27, 2002
Filed: Sep 20, 2001
Inventor
John Richard Boylan
Assignee (at issue)
Celanese International 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.