Granted Patent
Utility
US 4,614,778 · App. 06/696,161
Random copolymer
Inventors:
Hirokazu Kajiura, Hidekuni Oda, Syuji Minami
Patented Case
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Granted: Sep 30, 1986
Filed: Jan 29, 1985
Inventors
Hirokazu Kajiura
Hidekuni Oda
Syuji Minami
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.