Granted Patent
Utility
US 5,840,389 · App. 08/802,825
Transparent impact-resistant molded articles
Inventors:
Tadashi Asanuma, Tateyo Sasaki, Shosuke Nakanishi
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Feb 18, 1997
Inventors
Tadashi Asanuma
Tateyo Sasaki
Shosuke Nakanishi
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.