Granted Patent
Utility
US 5,352,761 · App. 08/160,766
Naphthalene dicarboxylic acids and esters substituted with aroyl groups
Inventors:
Allan S. Jones, Charles Edwan Sumner, Jr.
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Dec 3, 1993
Inventors
Allan S. Jones
Charles Edwan Sumner, Jr.
Assignee (at issue)
Eastman Chemical 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.