Granted Patent
Utility
US 6,031,065 · App. 09/017,514
Polyester copolymers from naphthalate and related esters
Inventors:
Carl Steven Nichols, Robert Adrian Ellis, James Scott Thomas
Patented Case
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Granted: Feb 29, 2000
Filed: Feb 2, 1998
Inventors
Carl Steven Nichols
Robert Adrian Ellis
James Scott Thomas
Assignee (at issue)
Wellman Inc.
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.