Granted Patent
Utility
US 5,254,617 · App. 07/689,283
Resin composition for producing a film and method for producing a film by using the same
Inventors:
Hiroshi Inoue, Toshihiro Nishimura, Takashi Matsunaga
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Jun 17, 1991
Inventors
Hiroshi Inoue
Toshihiro Nishimura
Takashi Matsunaga
Assignee (at issue)
Mitsui Petrochemical 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.