Patent US4514522A successfully refreshed from Google Patents.
US4514522A
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Oxygen sorbent
Assignee: University Patents Inc
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Filing: 1984-07-27
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Granted: 1985-04-30
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Expires: 2004-07-27
Abstract
Abstract The present invention discloses a novel and unique family of agents which reversibly binds molecular oxygen at room temperature.
Inventors
- 👤 Robert E. Sievers
- 👤 John N. Gillis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:46
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; B; B01; B01J; B01J20/00; B01J20/22; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0233; C01B13/0244; C01B13/0248; C01B13/0259; C01B13/0262; C07; C07F; C07F15/00; C07F15/06; C07F15/065; C08F; C08F251/00; C08F251/02; C01B2210/00; C01B2210/0043; C01B2210/0046; C01B2210/0078; C01B2210/0082
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A metallic complex of a Schiff base of the general formula ##STR5## wherein R, R 1 and R 2 are selected from the group consisting of hydrogen, lower alkyl containing from 1 to 10 carbon atoms, and polyfluoromoieties containing from 1 to 10 carbon atoms bonded to a porous synthetic organic polymer containing a nitrogen functionality.
Claim 2
Dependent Claim
56 words
A metallic complex of a Schiff base of the general formula ##STR5## wherein R, R 1 and R 2 are selected from the group consisting of hydrogen, lower alkyl containing from 1 to 10 carbon atoms, and polyfluoromoieties containing from 1 to 10 carbon atoms bonded to a porous synthetic organic polymer containing a nitrogen functionality.
Claim 3
Dependent Claim
25 words
A metallic complex of claim 1 wherein M is selected from the group consisting of iron, copper, cobalt, manganese, nickel, zinc, palladium, platinum, and vanadium.
Claim 4
Dependent Claim
10 words
The metallic complex of claim 2 wherein M is cobalt.
Claim 5
Dependent Claim
12 words
The metallic complex of claim 2 wherein the polymer comprises vinylpyridine monomer.
Claim 6
Dependent Claim
15 words
The metallic complex of claim 4 wherein the polymer further comprises diethylbenzene and ethylvinylbenzene monomers.
Claim 7
Dependent Claim
14 words
The bonded complex of claim 1 wherein the nitrogen functionality is a pyridyl group.
Claim 8
Dependent Claim
15 words
The bonded complex of claim 1 wherein the nitrogen functionality is an exocyclic nitrogen moiety.
Claim 9
Dependent Claim
19 words
The bonded complex of claim 1 wherein R 1 is the cobalt complex of a Schiff base is hydrogen.
Claim 10
Dependent Claim
15 words
The bonded complex of claim 5 wherein R is t-butyl, and R 2 is iso-butyl.
References Cited (Backward Citations)
US4198792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |