Granted Patent
Utility
US 5,725,812 · App. 08/684,699
Melt blowing apparatus and method for forming a fibrous layered web of filter media including a fluid distribution arrangement
Inventor:
Kyung-Ju Choi
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Jul 22, 1996
Inventor
Kyung-Ju Choi
Assignee (at issue)
AAF International, 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.