Granted Patent
Utility
US 4,948,641 · App. 07/448,454
Multiple layer container for storage of high purity chemicals
Inventors:
David J. Shantz, Thomas A. Armer, David V. Olson
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Dec 11, 1989
Inventors
David J. Shantz
Thomas A. Armer
David V. Olson
Assignee (at issue)
Olin Corporation
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.