Granted Patent
Utility
US 4,579,893 · App. 06/568,569
Benzoxazole stabilizer compounds and polymeric materials stabilized therewith
Inventors:
Richard H. S. Wang, Michael Bellas, William W. Blount, Jr.
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Jan 6, 1984
Inventors
Richard H. S. Wang
Michael Bellas
William W. Blount, Jr.
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.