Granted Patent
Utility
US 6,701,753 · App. 09/781,515
Method and apparatus for making improved optical fiber preforms and optical fiber therefrom
Inventors:
Xiaoyuan Dong, Siu-Ping Hong
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Feb 11, 2001
Inventors
Xiaoyuan Dong
Siu-Ping Hong
Assignee (at issue)
Fitel USA 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.