Granted Patent
Utility
US 5,728,299 · App. 08/726,224
Wound non-woven fabric filter having heat fusible fibers
Inventors:
Shinichi Tokudome, Satoshi Ogata, Katsuhiro Shishikura
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Oct 4, 1996
Inventors
Shinichi Tokudome
Satoshi Ogata
Katsuhiro Shishikura
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.