Granted Patent
Utility
US 5,308,821 · App. 07/906,993
Packing adsorbent particles for storage of natural gas
Inventor:
Chin-Hsiung Chang
Patented Case
View Patent ↗
Granted: May 3, 1994
Filed: Jul 1, 1992
Inventor
Chin-Hsiung Chang
Assignee (at issue)
AlliedSignal, 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.