Granted Patent
Utility
US 5,145,950 · App. 07/651,043
Method of storing food or plant materials by wrapping with a stretched syndiotactic polystyrene film
Inventors:
Keisuke Funaki, Komei Yamasaki
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Feb 4, 1991
Inventors
Keisuke Funaki
Komei Yamasaki
Assignee (at issue)
IDEMITSU KOSAN 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.