Granted Patent
Utility
US 6,514,409 · App. 09/756,777
Hollow fiber membrane made of an ethylene-vinyl alcohol polymer
Inventors:
Tomoki Kakiuchi, Koji Sekiguchi, Takeshi Suehiro, Shuhei Nakaji, Yoichi Matsumoto, Masato Takai, Nozomu Sugo, Hitoshi Tsuruta
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Jan 10, 2001
Inventors
Tomoki Kakiuchi
Koji Sekiguchi
Takeshi Suehiro
Shuhei Nakaji
Yoichi Matsumoto
Masato Takai
Nozomu Sugo
Hitoshi Tsuruta
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.