Granted Patent
Utility
US 4,798,757 · App. 07/064,363
Soft water-permeable polyolefin nonwovens having opaque characteristics
Inventors:
James P. Modrak, Owen P. Roberts
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Jun 22, 1987
Inventors
James P. Modrak
Owen P. Roberts
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.