Granted Patent
Utility
US 5,601,851 · App. 08/623,980
Melt-blow spinneret device
Inventor:
Taiju Terakawa
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Mar 28, 1996
Inventor
Taiju Terakawa
Assignee (at issue)
Chisso Corporation
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.