Granted Patent
Utility
US 6,477,852 · App. 09/799,056
Heat and electric power supply system and operation method thereof
Inventors:
Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Mar 6, 2001
Inventors
Satoshi Dodo
Kuniyoshi Tsubouchi
Norio Yasugahira
Hiroshi Arita
Yasuaki Akatsu
Shigeo Hatamiya
Assignee (at issue)
HITACHI, 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.