Granted Patent
Utility
US 5,770,531 · App. 08/639,637
Mechanical and internal softening for nonwoven web
Inventors:
Gregory Todd Sudduth, Ali Yahiaoui
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Apr 29, 1996
Inventors
Gregory Todd Sudduth
Ali Yahiaoui
Assignee (at issue)
Kimberly-Clark Worldwide, 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.