Granted Patent
Utility
US 6,312,634 · App. 09/517,600
Process of making polyester fibers
Inventors:
Eun-lai Cho, Duk-ho Oh, Hyek Se Lee
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Mar 2, 2000
Inventors
Eun-lai Cho
Duk-ho Oh
Hyek Se 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.