Granted Patent
Utility
US 4,187,213 · App. 05/868,087
Multiheterocyclic ultraviolet stabilizers and their use in organic compositions
Inventors:
Gether Irick, Jr., James C. Ownby, Richard H. S. Wang
Patented Case
View Patent ↗
Granted: Feb 5, 1980
Filed: Jan 9, 1978
Inventors
Gether Irick, Jr.
James C. Ownby
Richard H. S. Wang
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.