Granted Patent
Utility
US 6,645,622 · App. 10/165,935
Biodegradable fiber and process for preparing the same
Inventor:
Hideki Yamane
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jun 10, 2002
Inventor
Hideki Yamane
Assignee (at issue)
KANEKA 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.