Granted Patent
Utility
US 5,665,137 · App. 08/515,412
Method for controlling secondary foam during glass melting
Inventor:
Jianzhong Huang
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Aug 15, 1995
Inventor
Jianzhong Huang
Assignee (at issue)
Owens-Corning Fiberglas Technology, Inc.
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.