Granted Patent
Utility
US 6,403,674 · App. 09/716,193
Solvent-free method for synthesizing superabsorbent polymers
Inventor:
Mark A. Schubert
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Nov 17, 2000
Inventor
Mark A. Schubert
Assignee (at issue)
Eveready Battery Company, 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.