Granted Patent
Utility
US 6,402,873 · App. 09/167,715
Method of manufacturing laminated thermoplastic resin sheet and apparatus therefor
Inventors:
Atsushi Fujii, Akira Funaki, Masahiro Kubo
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Oct 7, 1998
Inventors
Atsushi Fujii
Akira Funaki
Masahiro Kubo
Assignee (at issue)
Idemitsu Petrochemical 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.