Patent US3397582A successfully refreshed from Google Patents.
Patent US4469496A successfully refreshed from Google Patents.
US4469496A
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US
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Means for separating isotopes of hydrogen based on the principle of gas chromatography
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
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Filing: 1983-11-29
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Granted: 1984-09-04
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Expires: 2003-11-29
Abstract
Abstract The invention describes a means for separating isotopes of hydrogen which is based on the principle of gas chromatography and is suitable for separating large amounts of hydrogen as is necessary for fusion experiments. The substantially higher throughput in comparison to that of other analysis devices based on gas chromatography is rendered feasible by the fact that the packings of the separation columns and the collectors for absorbing the separate species contain inert additives which ensure even distribution of the gas flow.
Inventors
- 👤 Hans Frischmuth
- 👤 Jurgen Perchermeier
- 👤 Anton Stimmelmayr
- 👤 Heinrich Weichselgartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:28
CPC Classifications
C; C01; C01B; C01B4/00; B; B01; B01D; B01D59/00; B01D59/22; B01D59/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
A means for separating isotopes of hydrogen contained in a gas mixture based on the principles of gas chromatography, comprising a flow passage for a carrier gas containing a feed pump (MP), at least one separation column with a packing, including a fine-grained active separation material, at least one collector (A1), which is controlled so as to be communicated by a valve arrangement, with a packing of a hydrogen-absorbing material, and a valve arrangement for controlling the separation process, characterised in that the separation material is a fine non-metallic material in which inert fibrous fillers are evenly distributed in an amount of not more than 5 percent by volume.
Claim 2
Dependent Claim
109 words
A means for separating isotopes of hydrogen contained in a gas mixture based on the principles of gas chromatography, comprising a flow passage for a carrier gas containing a feed pump (MP), at least one separation column with a packing, including a fine-grained active separation material, at least one collector (A1), which is controlled so as to be communicated by a valve arrangement, with a packing of a hydrogen-absorbing material, and a valve arrangement for controlling the separation process, characterised in that the separation material is a fine non-metallic material in which inert fibrous fillers are evenly distributed in an amount of not more than 5 percent by volume.
Claim 3
Dependent Claim
15 words
A means according to claim 1, characterised in that the fibres consist of silicon dioxide.
Claim 4
Dependent Claim
16 words
A means according to claim 2, characterised in that the active separation material is aluminium oxide.
Claim 5
Dependent Claim
26 words
A means according to claim 1, characterised in that the active separation material is gamma-aluminium oxide having a water content of approximately 1 percent by weight.
Claim 6
Dependent Claim
41 words
A means according to claim 1, characterised in that the fibres have a mean diameter of about 0.1 mm and a mean length 2 mm and that the separation material consists of particles of a size between 60 and 210 microns.
Claim 7
Dependent Claim
23 words
A means according to claim 1, characterised in that the fibres account for 0.5 to 2 percent by weight of the separation material.
Claim 8
Dependent Claim
18 words
A means according to claim 1, characterised in that the separation material is disposed in a copper pipe.
Claim 9
Dependent Claim
28 words
A means according to either of claims 1 or 7, characterised in that the separation material is disposed in a pipe having a diameter of about 50 mm.
Claim 10
Dependent Claim
105 words
A means for separating isotopes of hydrogen contained in a gas mixture based on the principle of gas chromatography, comprising a flow passage for a carrier gas containing a feed pump (MP), at least one separation column with a packing, including a fine-grained active separation material, at least one collector (A1) which is controlled so as to be communicated by a valve arrangement, with a packing of a hydrogen-absorbing material, and a valve arrangement for controlling the separation process, characterised in that the packing of the collector contains powdered pyrophorous uranium as absorbing material and coarser particles of a highly conductive material as a filler.
Claim 11
Dependent Claim
105 words
A means for separating isotopes of hydrogen contained in a gas mixture based on the principle of gas chromatography, comprising a flow passage for a carrier gas containing a feed pump (MP), at least one separation column with a packing, including a fine-grained active separation material, at least one collector (A1) which is controlled so as to be communicated by a valve arrangement, with a packing of a hydrogen-absorbing material, and a valve arrangement for controlling the separation process, characterised in that the packing of the collector contains powdered pyrophorous uranium as absorbing material and coarser particles of a highly conductive material as a filler.
Claim 12
Dependent Claim
17 words
A means according to claim 9, characterised in that the packing of the collector contains ball-shaped fillers.
Claim 13
Dependent Claim
18 words
A means according to claim 9, characterised in that the fillers consist of balls made of stainless steel.
Claim 14
Dependent Claim
21 words
A means according to either of claims 9 or 10, characterised in that the packing of the collector contains bimetallic fillers.
Claim 15
Dependent Claim
16 words
A means according to claim 11, characterised in that the bimetallic fillers are spiral or helical.
Claim 16
Dependent Claim
17 words
A means according to claim 9, characterised in that the collector is provided with a heating device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |