Granted Patent
Utility
US 5,110,399 · App. 07/440,192
Heat-cutting/bonding blade and heat-bonding apparatus
Inventors:
Yoshinori Yoshida, Makoto Hagihara
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Nov 22, 1989
Inventors
Yoshinori Yoshida
Makoto Hagihara
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.