Granted Patent
Utility
US 5,433,994 · App. 07/994,210
Superabsorbent structure
Inventors:
Betty J. McKinney, Joanne C. Maheras, Ronald J. Foltz, Steven F. Nielsen, Ronald O. Bryant, John B. Hopkins, Jr.
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Dec 18, 1992
Inventors
Betty J. McKinney
Joanne C. Maheras
Ronald J. Foltz
Steven F. Nielsen
Ronald O. Bryant
John B. Hopkins, Jr.
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.