Granted Patent
Utility
US 6,641,765 · App. 09/972,001
Polyester multifilament yarn
Inventors:
Eun-lai Cho, Duk-ho Oh, Song-joo Choi
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Oct 4, 2001
Inventors
Eun-lai Cho
Duk-ho Oh
Song-joo Choi
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.