Granted Patent
Utility
US 5,156,797 · App. 07/775,690
Nonwoven fabrics
Inventors:
Komei Yamasaki, Keisuke Funaki
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Oct 10, 1991
Inventors
Komei Yamasaki
Keisuke Funaki
Assignee (at issue)
IDEMITSU KOSAN CO., 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.