Granted Patent
Utility
US 5,366,792 · App. 07/994,959
Laminated three layer non-woven fabric with improved interface and process for producing the same
Inventors:
Ryutaro Shirayanagi, Masaki Shimizu, Masami Shimokawa
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Dec 22, 1992
Inventors
Ryutaro Shirayanagi
Masaki Shimizu
Masami Shimokawa
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.