Granted Patent
Utility
US 6,740,699 · App. 10/044,608
Method for obtaining a stabilized photochromic latex, latex obtained, and application to ophthalmic optics
Inventors:
Pascale Tardieu, Sylvette Maisonnier, Anne Robert, Jean-Paul Cano
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jan 11, 2002
Inventors
Pascale Tardieu
Sylvette Maisonnier
Anne Robert
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.