Granted Patent
Utility
US 5,721,285 · App. 08/592,068
Thermal insulating foamed material and method of manufacturing the same
Inventors:
Hideo Nakamoto, Tomohisa Tenra, Tsukasa Takushima, Takayoshi Ueno, Masaaki Suzuki, Fumihiro Inagaki, Takashi Hashida, Yoshio Kishimoto
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Jan 26, 1996
Inventors
Hideo Nakamoto
Tomohisa Tenra
Tsukasa Takushima
Takayoshi Ueno
Masaaki Suzuki
Fumihiro Inagaki
Takashi Hashida
Yoshio Kishimoto
Assignees (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
Matsushita Refrigeration Company
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.