Granted Patent
Utility
US 6,592,801 · App. 09/846,669
Photopolymerization of episulfides using metal complexes and its use for making ophthalmic lenses
Inventors:
Sirisoma Wanigatunga, Yassin Turshani, Peiqi Jiang
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Apr 30, 2001
Inventors
Sirisoma Wanigatunga
Yassin Turshani
Peiqi Jiang
Assignee (at issue)
Essilor International (Compagnie Generale d'Optique)
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.