Granted Patent
Utility
US 4,986,336 · App. 07/384,597
Twin-roll type continuous casting machine
Inventors:
Hisahiko Fukase, Kunio Matsui, Akihiro Nomura, Atsushi Hirata
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Jul 25, 1990
Inventors
Hisahiko Fukase
Kunio Matsui
Akihiro Nomura
Atsushi Hirata
Assignee (at issue)
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES 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.