Granted Patent
Utility
US 5,595,954 · App. 08/569,970
Method for making an HCL adsorbent
Inventors:
John Lee, Michael J. Pearson
Patented Case
View Patent ↗
Granted: Jan 21, 1997
Filed: Dec 8, 1995
Inventors
John Lee
Michael J. Pearson
Assignee (at issue)
Discovery Chemicals, 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.