The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
Jan. 31, 2002
Akira Nishimizu, Hitachi, JP;
Youichi Amako, Niigata, JP;
Takahide Matsuo, Naka, JP;
Noriyuki Hayashi, Hitachinaka, JP;
Takashi Shirone, Hitachi, JP;
Akira Nishimizu, Hitachi, JP;
Youichi Amako, Niigata, JP;
Takahide Matsuo, Naka, JP;
Noriyuki Hayashi, Hitachinaka, JP;
Takashi Shirone, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gas insulation transformer, in the tank of which transformer an apparatus including an iron core and a coil is received and a gas is filled as an insulating and cooling medium, is provided, wherein the iron core and coil are possessed with the loss characteristics equivalent to that of a high-efficient transformer and an inert gas, the global warming coefficient of which gas is rated 1 or below, is filled in the tank as an insulating and cooling medium.