Granted Patent
Utility
US 5,887,644 · App. 08/801,925
Roll cooling structure for twin roll continuous caster
Inventors:
Ryo Akiyoshi, Masayoshi Hori, Kunio Matsui, Atsushi Hirata, Koichi Fujita, Shu Ogawa
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Feb 14, 1997
Inventors
Ryo Akiyoshi
Masayoshi Hori
Kunio Matsui
Atsushi Hirata
Koichi Fujita
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.