Granted Patent
Utility
US 6,494,974 · App. 09/962,745
Method of forming meltblown webs containing particles
Inventor:
Wilfred Eugene Riddell
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Sep 24, 2001
Inventor
Wilfred Eugene Riddell
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.