Granted Patent
Utility
US 5,609,819 · App. 08/499,658
Method of sterilizing sealed vial and apparatus for sealing the vial
Inventors:
Katsumi Shimizu, Washiro Honda
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Jul 7, 1995
Inventors
Katsumi Shimizu
Washiro Honda
Assignee (at issue)
Eisai 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.