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:
Oct. 27, 2009
Filed:
Aug. 03, 2005
Akimasa Tasaka, Kyoto, JP;
Masashi Kodama, Osaka, JP;
Udai Tanaka, Osaka, JP;
Hitoshi Takebayashi, Osaka, JP;
Tetsuro Tojo, Osaka, JP;
Atsuhisa Mimoto, Tokyo, JP;
Akimasa Tasaka, Kyoto, JP;
Masashi Kodama, Osaka, JP;
Udai Tanaka, Osaka, JP;
Hitoshi Takebayashi, Osaka, JP;
Tetsuro Tojo, Osaka, JP;
Atsuhisa Mimoto, Tokyo, JP;
Toyo Tanso Co., Ltd., Osaka-shi, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A carbon electrode for producing gaseous nitrogen trifluoride comprising a dense texture with an average pore size of 0.5 μm or less is provided. The carbon electrode contains a carbonaceous material, and 3 to 10 wt % of at least one selected from magnesium fluoride and aluminum fluoride which have a melting point not lower than the baking temperature of the carbonaceous material.