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US3665680A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrogen diffusion apparatus

Assignee: Engelhard Minerals and Chemicals Corp
•
Filing: 1970-12-18
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Granted: 1972-05-30
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Expires: 1990-12-18
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Abstract

Abstract A hydrogen diffusion apparatus for the purification of hydrogen comprising a tubular housing having closure means at opposite ends thereof, an outlet means through the wall of the housing, an elongated support means located internally of and longitudinally of the housing and having opposite ends each mounted on one of the closure means, a non-porous hydrogen-permeable thin-walled metal tube in the form of an elongated coil coaxially mounted on the support means, opposite ends of the tube extending from the coil and each passing through the wall of one of the closure means, a metal strip member passing between the coil and the support longitudinally thereof and at one end attached thereto, the strip having hook-like members on opposite end portions thereof, the hook-like members embracing opposite ends of the coil, whereby the coil is permitted only limited movement on the support.

Inventors

  • 👤 Gustav Heuser

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 10:01
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 20 words
A hydrogen diffusion apparatus according to claim 1, wherein the support means is in the form of two telescoping tubes.
Claim 2
Dependent Claim 19 words
A hydrogen diffusion apparatus according to claim 1, wherein the hook-like members loosely embrace opposite ends of the coil.
Claim 3
Dependent Claim 22 words
A hydrogen diffusion apparatus according to claim 1, whereon one end of the metal strip member is secured to the support means.

References Cited (Backward Citations)

US3422008A Cited
US3274754A Cited
US3279154A Cited
US3437357A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-30 1975-11-29 1976-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-30 1979-11-29 1980-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-30 1983-11-29 1984-05-30 $7700.00 Window Closed / Lapsed

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