Granted Patent
Utility
US 6,672,258 · App. 10/138,306
Intermediate heat exchanger-incorporated type steam generator
Inventors:
Hitoshi Hayashida, Kuniaki Ara
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: May 6, 2002
Inventors
Hitoshi Hayashida
Kuniaki Ara
Assignee (at issue)
Japan Nuclear Cycle Development Institute
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.