Granted Patent
Utility
US 6,007,653 · App. 08/952,936
Manufacturing method and nonwoven material
Inventors:
Pentti Pirinen, Tapio Niemi
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Nov 26, 1997
Inventors
Pentti Pirinen
Tapio Niemi
Assignee (at issue)
UPM-KYMMENE OYJ
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.