Granted Patent
Utility
US 5,347,528 · App. 08/042,516
Pulse laser irradiation apparatus for coated metal material
Inventors:
Koichi Haruta, Yuichiro Terashi
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Apr 5, 1993
Inventors
Koichi Haruta
Yuichiro Terashi
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.