Granted Patent
Utility
US 6,815,060 · App. 10/398,473
Spun yarn
Inventor:
Yasunori Yuuki
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Apr 4, 2003
Inventor
Yasunori Yuuki
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.