Granted Patent
Utility
US 4,876,378 · App. 07/197,232
Recovery of dialkyl naphthalene-2,6-dicarboxylates from naphthalene-2,6-dicarboxylic acid-containing polyesters
Inventor:
Dale E. Van Sickle
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: May 23, 1988
Inventor
Dale E. Van Sickle
Assignee (at issue)
EASTMAN KODAK COMPANY
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.