Granted Patent
Utility
US 6,410,676 · App. 09/555,338
Method for producing polyoxyalkylene polyol and derivatives thereof
Inventors:
Satoshi Yamasaki, Yasunori Hara, Tamotsu Kunihiro, Fumio Yamazaki, Mikio Matsufuji, Ariko Nishikawa, Shinsuke Matsumoto, Tsukuru Izukawa, Masahiro Isobe, Kazuhiko Ohkubo, Kaoru Ueno
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: May 30, 2000
Inventors
Satoshi Yamasaki
Yasunori Hara
Tamotsu Kunihiro
Fumio Yamazaki
Mikio Matsufuji
Ariko Nishikawa
Shinsuke Matsumoto
Tsukuru Izukawa
Masahiro Isobe
Kazuhiko Ohkubo
Kaoru Ueno
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.