Granted Patent
Utility
US 5,272,023 · App. 08/017,627
Hotmelt-adhesive fiber sheet and process for producing the same
Inventors:
Kazue Yamamoto, Satoshi Ogata
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Feb 12, 1993
Inventors
Kazue Yamamoto
Satoshi Ogata
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.