Granted Patent
Utility
US 6,627,317 · App. 09/858,873
Heat treatable coated articles with anti-migration barrier layer between dielectric and solar control layers, and methods of making same
Inventor:
Hong Wang
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: May 17, 2001
Inventor
Hong Wang
Assignee (at issue)
Guardian Industries Corp.
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.