Granted Patent
Utility
US 6,759,587 · App. 10/134,221
Thermoelectric materials, thermoelectric device, and method for producing thermoelectric materials
Inventors:
Naoki Toshima, Hu Yan, Kohsuke Kamei, Akinori Tsubata, Takashi Tokuda
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Apr 26, 2002
Inventors
Naoki Toshima
Hu Yan
Kohsuke Kamei
Akinori Tsubata
Takashi Tokuda
Assignees (at issue)
HOKUSHIN CO., LTD
Naoki Toshima
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.