Granted Patent
Utility
US 4,680,227 · App. 06/802,168
Fire-retarding resin composition and laminated product thereof
Inventors:
Yoshiki Aoyagi, Masatoshi Suzuki, Tadashi Inoue, Kunio Tsukakoshi
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Nov 25, 1985
Inventors
Yoshiki Aoyagi
Masatoshi Suzuki
Tadashi Inoue
Kunio Tsukakoshi
Assignee (at issue)
Mitsubishi Chemical Industries, 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.