| US 7,431,838 B2 | ||
| Gas/ion species selective membrane support by multi-stage nano-hole array metal structure | ||
| Sangkyun Kang, Seongnam-Si (Korea, Republic of); Yong-Il Park, Kyungbuk (Korea, Republic of); Friedrich B. Prinz, Woodside, Calif. (US); Suk-Won Cha, Stanford, Calif. (US); Yuji Saito, Tokyo (Japan); Ali Farvid, Palo Alto, Calif. (US); and Pei-Chen Su, Stanford, Calif. (US) | ||
| Assigned to The Board of Trustees of the Leland Stanford Junior University, Palo Alto, Calif. (US); and Honda Motor Co., Ltd, Tokyo (Japan) | ||
| Filed on Aug. 09, 2006, as Appl. No. 11/502,140. | ||
| Application 11/502140 is a division of application No. 11/090658, filed on Mar. 25, 2005, granted, now 7,108,813. | ||
| Claims priority of provisional application 60/558351, filed on Mar. 30, 2004. | ||
| Prior Publication US 2006/0273004 A1, Dec. 07, 2006 | ||
| Int. Cl. B01D 39/00 (2006.01); B01D 17/00 (2006.01); B01D 24/00 (2006.01); B01D 63/00 (2006.01); B32B 15/00 (2006.01) | ||
| U.S. Cl. 210—500.25 [210/490; 210/523.2; 210/321.6; 96/77; 55/523; 55/524; 428/548; 428/457; 428/381] | 14 Claims |
| 9. A supported membrane assembly comprising:
a) a porous metallic support membrane having opposite first and second surfaces;
wherein the support membrane has a first pore size at the first surface and has a second pore size at the second surface;
wherein the second pore size is greater than the first pore size;
wherein the support membrane has a first region including the first surface and a second region including the second surface,
and wherein the first region and the second region are adjacent to each other at an interface;
wherein an interface pore size of the first region at the interface is greater than the first pore size and less than the
second pore size; and
b) a gas or ion species selective membrane assembly in contact with the first surface.
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