Granted Patent
Utility
US 6,323,300 · App. 09/308,589
Aromatic copolymer and composition containing the same
Inventors:
Kohei Kita, Tsuneaki Tanabe, Mitsuo Konishi
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: May 21, 1999
Inventors
Kohei Kita
Tsuneaki Tanabe
Mitsuo Konishi
Assignee (at issue)
ASAHI KASEI KOGYO 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.