Granted Patent
Utility
US 4,668,566 · App. 06/785,368
Multilayer nonwoven fabric made with poly-propylene and polyethylene
Inventor:
Ralph V. Braun
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Oct 7, 1985
Inventor
Ralph V. Braun
Assignee (at issue)
Kimberly-Clark Inc.
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.