Granted Patent
Utility
US 6,770,710 · App. 09/991,773
Process for obtaining a photochromic latex
Inventors:
Anne Robert, Pascale Tardieu, Sylvette Maisonnier, Jean-Paul Cano
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Nov 16, 2001
Inventors
Anne Robert
Pascale Tardieu
Sylvette Maisonnier
Jean-Paul Cano
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.