Granted Patent
Utility
US 4,631,205 · App. 06/659,900
Process for producing coherent films of polyacetylene
Inventor:
John W. D. Eveleigh
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Oct 11, 1984
Inventor
John W. D. Eveleigh
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.