Granted Patent
Utility
US 6,239,230 · App. 09/390,462
Surface-treated superabsorbent polymer particles
Inventors:
David Eckert, Peter W. Carrico, Michael A. Mitchell
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Sep 7, 1999
Inventors
David Eckert
Peter W. Carrico
Michael A. Mitchell
Assignee (at issue)
BASK Aktiengesellschaft
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.