US4766229A
Expired / Lapsed
US
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Materials for gas separation
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1986-01-17
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Granted: 1988-08-23
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Expires: 2006-01-17
Abstract
Abstract A material for gas separation which consists essentially of (A) a cobalt salt; and (B) amine compound and/or its derivatives containing therein a unit structure to be represented by the following general formula: -NHCH2CH2CH2)n [where: n is an integer of 2 or more], wherein the components (A) and (B) are brought into mutual contact to produce the material for gas separation.
Inventors
- 👤 Yoshiteru Kobayashi
- 👤 Isao Konno
- 👤 Jun-ichi Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:45
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0285; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; B01J; B01J20/00; C01B13/0251; C01B13/0255; C01B2210/00; C01B2210/0043; C01B2210/0046
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A material for oxygen separation consisting essentially of: (A) a cobalt compound; and (B) amine compound or its derivatives containing therein a unit structure to be represented by the following general formula: --NHCH.sub.2 CH.sub.2 --.sub.n where n is an integer of 2 or more, said components being brought into mutual contact to form a complex which is capable of absorbing and desorbing oxygen.
Claim 2
Dependent Claim
63 words
A material for oxygen separation consisting essentially of: (A) a cobalt compound; and (B) amine compound or its derivatives containing therein a unit structure to be represented by the following general formula: --NHCH.sub.2 CH.sub.2 --.sub.n where n is an integer of 2 or more, said components being brought into mutual contact to form a complex which is capable of absorbing and desorbing oxygen.
Claim 3
Dependent Claim
40 words
A material for oxygen separation according to claim 1, wherein an axial base is brought into contact with said components (A) and (B), either simultaneously with contact between said components (A) and (B) or subsequent to the contact between them.
Claim 4
Dependent Claim
31 words
A material for oxygen separation according to claim 2, wherein the contact between said components (A), (B) and the axial base is carried out in the presence of a non-aqueous solvent.
Claim 5
Dependent Claim
28 words
A material for oxygen separation according to claim 1, wherein the contact between said components (A) and (B) is carried out in the presence of a non-aqueous solvent.
Claim 6
Dependent Claim
40 words
A material for oxygen separation according to claim 1, 2, 4 or 3, wherein carbon dioxide as a component (C) is brought into contact with said material for oxygen separation, either simultaneously with, or subsequent to, formation of the complex.
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |