Granted Patent
Utility
US 4,805,768 · App. 07/096,786
Paper container for liquid sealed with gas in head space, method of filling gas and apparatus for filling gas
Inventors:
Youichi Nishiguchi, Kazuo Sasaki
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Sep 17, 1987
Inventors
Youichi Nishiguchi
Kazuo Sasaki
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.