Granted Patent
Utility
US 4,925,601 · App. 07/145,065
Method for making melt-blown liquid filter medium
Inventors:
Clifford M. Vogt, Nancy D. Twyman, Roe Clyde Allen
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Jan 19, 1988
Inventors
Clifford M. Vogt
Nancy D. Twyman
Roe Clyde Allen
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.