Granted Patent
Utility
US 4,824,451 · App. 07/099,283
Melt-blown filter medium
Inventors:
Clifford M. Vogt, Peter W. Shipp, Jr.
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Sep 21, 1987
Inventors
Clifford M. Vogt
Peter W. Shipp, Jr.
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.