Granted Patent
Utility
US 6,370,896 · App. 09/441,965
Hot water supply system
Inventors:
Hisayoshi Sakakibara, Shin Nishida, Masahiko Ito, Kenichi Fujiwara, Tomoaki Kobayakawa, Kazutoshi Kusakari, Michiyuki Saikawa
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Nov 17, 1999
Inventors
Hisayoshi Sakakibara
Shin Nishida
Masahiko Ito
Kenichi Fujiwara
Tomoaki Kobayakawa
Kazutoshi Kusakari
Michiyuki Saikawa
Assignees (at issue)
DENSO CORPORATION
TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED
CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
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.