Granted Patent
Utility
US 4,885,204 · App. 07/238,686
Absorbent product with hydrophobic acquisition layer
Inventors:
Peter G. Bither, Berne F. Ellers, Edward J. Engle
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Aug 31, 1988
Inventors
Peter G. Bither
Berne F. Ellers
Edward J. Engle
Assignee (at issue)
HERCULES LLC
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.