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:
Jan. 30, 2007
Filed:
Jun. 02, 2003
Yuji Saito, Wako, JP;
Jun Sasahara, Wako, JP;
Nariaki Kuriyama, Wako, JP;
Tadahiro Kubota, Wako, JP;
Toshifumi Suzuki, Wako, JP;
Yuji Isogai, Wako, JP;
Friedrich B. Prinz, Stanford, CA (US);
Sang-joon John Lee, Stanford, CA (US);
Suk Won Cha, Stanford, CA (US);
Yaocheng Liu, Stanford, CA (US);
Ryan O'hayre, Stanford, CA (US);
Yuji Saito, Wako, JP;
Jun Sasahara, Wako, JP;
Nariaki Kuriyama, Wako, JP;
Tadahiro Kubota, Wako, JP;
Toshifumi Suzuki, Wako, JP;
Yuji Isogai, Wako, JP;
Friedrich B. Prinz, Stanford, CA (US);
Sang-Joon John Lee, Stanford, CA (US);
Suk Won Cha, Stanford, CA (US);
Yaocheng Liu, Stanford, CA (US);
Ryan O'Hayre, Stanford, CA (US);
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Stanford University, Palo Alto, CA (US);
Abstract
In a fuel cell comprising a tubular casing, an electrolyte layer received in the tubular casing, and a pair of gas diffusion electrodes interposing the electrolyte layer and defining a fuel gas passage and an oxidizing gas passage, respectively, each gas diffusion electrode is formed by stacking a plurality of layers of material therefor, for instance in the axial direction of the casing. Because the gas diffusion layers are formed layer by layer, components can be formed in highly fine patterns so that a highly compact tubular fuel cell can be achieved. Similarly, the dimensions of the various elements of the fuel cell can be controlled in a highly accurate manner. Also, the geometric arrangement can be changed at will in intermediate parts of each gas passage.