Granted Patent
Utility
US 6,739,167 · App. 10/355,249
Work roll for use in rolling apparatus
Inventors:
Keigo Kobayashi, Norikazu Inaba, Takashi Tamura
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jan 31, 2003
Inventors
Keigo Kobayashi
Norikazu Inaba
Takashi Tamura
Assignee (at issue)
Showa Denko K.K.
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.