US4329157A
Expired / Lapsed
US
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Inorganic anisotropic hollow fibers
Assignee: Permea Inc
•
Filing: 1980-08-15
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Granted: 1982-05-11
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Expires: 2000-08-15
Abstract
Abstract Essentially inorganic monolithic hollow fibers having a radially anisotropic internal void volume wall structure. Process for the production of such fibers. Apparatus and processes using such fibers.
Inventors
- 👤 Emerick J. Dobo
- 👤 Tommy E. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:53
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0039; B01D67/0041; B01D67/00411; B01D53/00; B01D53/22; B01D63/00; B01D63/02; B01D69/00; B01D69/08; B01D71/00; B01D71/02; B01D71/0213; B01J; B01J35/00; B01J35/50; B01J35/58; B22; B22D; B22D11/00; B22D11/005; B22F; B22F3/00; B22F3/002; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/022; C03B37/075; C03B37/0756; C04; C04B; C04B20/00; C04B20/0048; C04B20/0056; D; D01; D01D; D01D5/00; D01D5/24; D01F; D01F9/00; D01F9/08; D01F9/10; H; H01; H01M; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; H01M4/00; H01M4/86; H01M8/00; B01D2313/00; B01D2313/42; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/047; C01B2203/048; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50; Y02P; Y02P40/00; Y02P40/50; Y02P40/57; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
45 words
In a process for diffusing hydrogen through a hydrogen diffusible non-porous metal barrier, the improvement wherein a hydrogen diffusible metal, monolithic hollow fiber having a radially anisotropic internal void volume wall structure and an essentially non-porous compact layer comprises the non-porous hydrogen diffusible metal barrier.
Claim 2
Dependent Claim
45 words
In a process for diffusing hydrogen through a hydrogen diffusible non-porous metal barrier, the improvement wherein a hydrogen diffusible metal, monolithic hollow fiber having a radially anisotropic internal void volume wall structure and an essentially non-porous compact layer comprises the non-porous hydrogen diffusible metal barrier.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the metal of the hollow fiber comprises nickel or nickel alloy.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the metal is a nickel alloy comprising nickel and iron.
Claim 5
Dependent Claim
22 words
The process according to claim 1, 2 or 3 wherein the hydrogen diffuses from a gas mixture obtained from an equilibrium reaction.
Claim 6
Dependent Claim
26 words
The process of claim 4 wherein the hydrogen diffuses through the hollow fiber from a gas mixture obtained from a methanol-water reforming reaction which produces hydrogen.
Claim 7
Dependent Claim
26 words
The process of claim 4 wherein the hydrogen diffuses through the hollow fiber from a gas mixture obtained from a hydrocarbon-water reforming reaction which produces hydrogen.
Claim 8
Dependent Claim
20 words
The process according to claim 1, 2 or 3 wherein the hydrogen diffusion is taking place in a fuel cell.
Claim 9
Dependent Claim
41 words
In a hydrogen diffusion cell having a hydrogen diffusible non-porous barrier, the improvement wherein the hydrogen diffusible non-porous barrier comprises hydrogen diffusible metal, monolithic hollow fibers having a radially anisotropic internal void volume wall structure and an essentially non-porous compact layer.
Claim 10
Dependent Claim
41 words
In a hydrogen diffusion cell having a hydrogen diffusible non-porous barrier, the improvement wherein the hydrogen diffusible non-porous barrier comprises hydrogen diffusible metal, monolithic hollow fibers having a radially anisotropic internal void volume wall structure and an essentially non-porous compact layer.
Claim 11
Dependent Claim
34 words
The hydrogen diffusion cell according to claim 8 wherein the hydrogen diffusible non-porous barrier comprises a bundle of metal fibers comprising a multiplicity of cords having a plurality of such hollow fibers twisted together.
Claim 12
Dependent Claim
24 words
In a fuel cell having a fuel electrode, the improvement wherein the fuel electrode comprises a hydrogen diffusible non-porous barrier according to claim 8.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |