Granted Patent
Utility
US 5,871,039 · App. 08/979,479
Twin roll continuous caster
Inventors:
Shiro Osada, Heiji Kato, Shuzo Takahashi, Shu Ogawa
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Nov 26, 1997
Inventors
Shiro Osada
Heiji Kato
Shuzo Takahashi
Shu Ogawa
Assignees (at issue)
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD.
BHP Steel (JLA) Pty. 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.