Granted Patent
Utility
US 5,896,662 · App. 08/950,216
Multi-layer structure roller and a method for producing the same
Inventors:
Kouzaburo Matsuzawa, Atsushi Fujii
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Oct 14, 1997
Inventors
Kouzaburo Matsuzawa
Atsushi Fujii
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.