Granted Patent
Utility
US 4,874,808 · App. 07/188,490
Cycloolefin type random copolymer compositions and uses thereof
Inventors:
Syuji Minami, Keiji Kawamoto, Tetsuji Kasai, Toshiaki Kuroiwa, Akira Todo
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Apr 29, 1988
Inventors
Syuji Minami
Keiji Kawamoto
Tetsuji Kasai
Toshiaki Kuroiwa
Akira Todo
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.