Granted Patent
Utility
US 6,207,794 · App. 09/202,559
Polyoxyalkylene polyols, derivatives thereof, and process for producing the polyoxyalkylene polyols
Inventors:
Satoshi Yamasaki, Yasunori Hara, Satoshi Tamura, Fumio Yamazaki, Hitoshi Watanabe, Mikio Matsufuji, Shinsuke Matsumoto, Ariko Nishikawa, Tsukuru Izukawa, Masaaki Aoki, Tadahito Nobori, Usaji Takaki
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Dec 17, 1998
Inventors
Satoshi Yamasaki
Yasunori Hara
Satoshi Tamura
Fumio Yamazaki
Hitoshi Watanabe
Mikio Matsufuji
Shinsuke Matsumoto
Ariko Nishikawa
Tsukuru Izukawa
Masaaki Aoki
Tadahito Nobori
Usaji Takaki
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.