Granted Patent
Utility
US 5,080,495 · App. 07/573,810
Method and apparatus for measuring thermal diffusivity by ac joule-heating
Inventors:
Toshimasa Hashimoto, Akira Miyamoto, Kohei Shizuka, Teruo Hyugaji
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Aug 28, 1990
Inventors
Toshimasa Hashimoto
Akira Miyamoto
Kohei Shizuka
Teruo Hyugaji
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.