Granted Patent
Utility
US 6,326,080 · App. 09/319,355
Biaxially oriented polypropylene-base film
Inventors:
Chikashi Okayama, Takanori Nakashima, Yasuhiro Shiraishi, Noriaki Saito, Yuya Ishimoto
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Sep 2, 1999
Inventors
Chikashi Okayama
Takanori Nakashima
Yasuhiro Shiraishi
Noriaki Saito
Yuya Ishimoto
Assignee (at issue)
Chisso Corporation
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.