Granted Patent
Utility
US 4,449,979 · App. 06/181,539
Absorbent structure having gradient densities
Inventor:
Dennis C. Holtman
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Aug 26, 1980
Inventor
Dennis C. Holtman
Assignee (at issue)
Johnson & Johnson Baby Products Company
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.