Granted Patent
Utility
US 6,511,747 · App. 09/972,002
High strength polyethylene naphthalate fiber
Inventors:
Eun-lai Cho, Song-joo Choi, Jong Bok Lee
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Oct 4, 2001
Inventors
Eun-lai Cho
Song-joo Choi
Jong Bok Lee
Assignee (at issue)
HYOSUNG CORPORATION
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.