Granted Patent
Utility
US 4,831,264 · App. 07/080,079
Method for measuring the concentration of adhesive on a coating layer surface
Inventor:
Hideki Fujiwara
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Jul 31, 1987
Inventor
Hideki Fujiwara
Assignee (at issue)
Jujo Paper 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.