Granted Patent
Utility
US 5,866,655 · App. 08/864,738
Vinyl alcohol polymer
Inventors:
Naoki Fujiwara, Takeshi Kusudou, Takaharu Kawahara, Toshiaki Sato
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: May 28, 1997
Inventors
Naoki Fujiwara
Takeshi Kusudou
Takaharu Kawahara
Toshiaki Sato
Assignee (at issue)
KURARAY CO., LTD.
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.