Granted Patent
Utility
US 6,790,388 · App. 10/015,663
Method of injection molding an optical article out of thermoplastic synthetic material
Inventors:
Hao-Wen Chiu, Hsinjin Yang
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Dec 17, 2001
Inventors
Hao-Wen Chiu
Hsinjin Yang
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.