Granted Patent
Utility
US 6,609,564 · App. 10/024,928
Reductive heat exchange water and heat exchange system using such water
Inventors:
Takashi Imaoka, Hiroshi Morita, Isamu Sugiyama, Tadahiro Ohmi, Masaki Hirayama
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Dec 19, 2001
Inventors
Takashi Imaoka
Hiroshi Morita
Isamu Sugiyama
Tadahiro Ohmi
Masaki Hirayama
Assignee (at issue)
ORGANO 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.