Granted Patent
Utility
US 4,058,124 · App. 05/563,128
Disposable absorbent articles containing particulate, free-flowing, insoluble swellable polymers
Inventors:
Steven Yen, Frederick D. Osterholtz
Patented Case
View Patent ↗
Granted: Nov 15, 1977
Filed: Mar 28, 1975
Inventors
Steven Yen
Frederick D. Osterholtz
Assignee (at issue)
Union Carbide Corporation
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.