Granted Patent
Utility
US 5,773,482 · App. 08/809,959
Thermal insulating foamed material, method for producing the same, and thermal insulating cabinet
Inventors:
Takayoshi Ueno, Takashi Hashida, Masaaki Suzuki, Fumihiro Inagaki, Nobuo Sonoda, Hideo Nakamoto, Tomohisa Tenra, Tsukasa Takushima, Yoshio Kishimoto
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: May 22, 1997
Inventors
Takayoshi Ueno
Takashi Hashida
Masaaki Suzuki
Fumihiro Inagaki
Nobuo Sonoda
Hideo Nakamoto
Tomohisa Tenra
Tsukasa Takushima
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.