Granted Patent
Utility
US 4,808,637 · App. 07/049,877
Superabsorbent composition and process
Inventors:
Franklin Boardman, John M. Lesniak
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: May 14, 1987
Inventors
Franklin Boardman
John M. Lesniak
Assignee (at issue)
Johnson & Johnson Patient Care, 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.