Granted Patent
Utility
US 6,530,244 · App. 09/493,084
Optical fiber preform having OH barrier and fabrication method thereof
Inventors:
Sung-Koog Oh, Man Seok SEO
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Jan 28, 2000
Inventors
Sung-Koog Oh
Man Seok SEO
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.