Granted Patent
Utility
US 4,659,255 · App. 06/805,604
Marine structure of precoated corrosion resistant steel pipe piles
Inventors:
Motoo Shiraishi, Mansei Tanaka, Minoru Nakamura, Koichi Sato
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Dec 6, 1985
Inventors
Motoo Shiraishi
Mansei Tanaka
Minoru Nakamura
Koichi Sato
Assignee (at issue)
NIPPON STEEL CORPORATION
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.