Patent US2626692A successfully refreshed from Google Patents.
Patent US4609383A successfully refreshed from Google Patents.
US4609383A
Expired / Lapsed
US
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Apparatus and method for extracting oxygen from fluids
Assignee: WR Grace and Co Conn
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Filing: 1984-09-24
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Granted: 1986-09-02
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Expires: 2004-09-24
Abstract
Abstract An apparatus for extracting oxygen from an environment surrounding the apparatus, which comprises a container having an interior space isolated from physical contact with the environment at least in part by a gas permeable membrane having a first and a second side, wherein the membrane contacts the environment on the first side of the membrane, a carrier fluid in contact with the second side of the membrane in the first container, and a non-proteinaceous oxygen binding compound contained in the carrier fluid, wherein the compound comprises a tetradentate chelating molecule, a metal ion chelated in the molecule, and a nitrogenous base chelated to the metal ion, is disclosed along with a method for extracting oxygen from environmental fluids.
Inventors
- 👤 Joseph Bonaventura
- 👤 Celia Bonaventura
- 👤 Joseph C. Van Ryzin
- 👤 Bruce D. Zenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0251; C01B13/0255; C01B13/0285; C25; C25B; C25B1/00; C25B1/01; C25B1/02; H; H01; H01M; H01M8/00; H01M8/06; H01M8/18; C01B2210/00; C01B2210/0043; C01B2210/005; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
112 words
An apparatus for extracting oxygen from an environment in contact with said apparatus, which comprises: a container having an inlet, an outlet, and an oxygen permeable membrane which together at least in part define an inner space of said container, said membrane having a first surface adapted to be in contact with said environment and a second surface facing said interior space; a carrier fluid in contact with said second surface of said membrane in said container; and a non-proteinaceous oxygen binding compound contained in said carrier fluid, wherein said compound comprises a tetradentate chelating molecule, a metal ion chelated in said molecule, and a nitrogenous base chelated to said metal ion.
Claim 2
Independent Claim
112 words
An apparatus for extracting oxygen from an environment in contact with said apparatus, which comprises: a container having an inlet, an outlet, and an oxygen permeable membrane which together at least in part define an inner space of said container, said membrane having a first surface adapted to be in contact with said environment and a second surface facing said interior space; a carrier fluid in contact with said second surface of said membrane in said container; and a non-proteinaceous oxygen binding compound contained in said carrier fluid, wherein said compound comprises a tetradentate chelating molecule, a metal ion chelated in said molecule, and a nitrogenous base chelated to said metal ion.
Claim 3
Dependent Claim
38 words
The apparatus of claim 1 which further comprises: means for circulating said carrier fluid and said oxygen binding compound contained in said carrier fluid from said inlet through said interior space and to said outlet of said container.
Claim 4
Dependent Claim
39 words
The apparatus of claim 1 wherein said container comprises: a pair of manifolds, and a plurality of oxygen permeable tubes connected in parallel by said pair of manifolds, said manifolds disposed at opposite ends of each oxygen permeable tube.
Claim 5
Dependent Claim
17 words
The apparatus of claim 1 wherein said membrane comprises silicone rubber, polytetrafluoroethylene, an alkylcellulose, or an acetylcellulose.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 wherein said carrier fluid is an organic solvent or a mixture or solution comprising an organic solvent.
Claim 7
Dependent Claim
12 words
The apparatus of claim 5 wherein said solvent is a nitrogenous base.
Claim 8
Dependent Claim
10 words
The apparatus of claim 6 wherein said solvent is 1-methylimidazole.
Claim 9
Dependent Claim
18 words
The apparatus of claim 1 wherein said compound comprises a protoporphyrin or an alkyl ester of a protoporphyrin.
Claim 10
Dependent Claim
16 words
The apparatus of claim 1 wherein said metal is iron, magnesium, zinc, cobalt, nickel, or copper.
Claim 11
Dependent Claim
16 words
The apparatus of claim 1 wherein said metal ion is Fe 2+ or Co 2+ .
Claim 12
Dependent Claim
11 words
The apparatus of claim 1 wherein said compound comprises a heme.
Claim 13
Dependent Claim
22 words
The apparatus of claim 1 wherein said compound is Fe(II) protoporphyrin IX or an alkyl ester or salt thereof complexed with 1-methylimidazole.
Claim 14
Dependent Claim
13 words
The apparatus of claim 12 wherein said carrier fluid is a nitrogenous base.
Claim 15
Dependent Claim
11 words
The apparatus of claim 13 wherein said carrier fluid is 1-methylimidazole.
Claim 16
Dependent Claim
14 words
The apparatus of claim 14 wherein said membrane is a silicone rubber-polysulfone composite membrane.
Claim 17
Dependent Claim
39 words
The apparatus of claim 15 wherein said container comprises a pair of manifolds and a plurality of oxygen permeable tubes connected in parallel by said pair of manifolds, said manifolds disposed at opposite ends of each oxygen permeable tube.
Claim 18
Independent Claim
103 words
A method for removing oxygen from a fluid environment, which comprises: contacting said environment with a first surface of an oxygen permeable membrane having a first and a second surface which separates said environment from an interior space of a closed container, and contacting said second surface of said membrane with a carrier fluid containing a non-proteinaceous oxygen binding compound which comprises a tetradentate molecule, a metal ion chelated by said molecule, and a nitrogenous base chelated to said metal ion, wherein said compound is not saturated with oxygen, thereby removing oxygen from said fluid environment and increasing oxygen concentration in said container.
Claim 19
Independent Claim
103 words
A method for removing oxygen from a fluid environment, which comprises: contacting said environment with a first surface of an oxygen permeable membrane having a first and a second surface which separates said environment from an interior space of a closed container, and contacting said second surface of said membrane with a carrier fluid containing a non-proteinaceous oxygen binding compound which comprises a tetradentate molecule, a metal ion chelated by said molecule, and a nitrogenous base chelated to said metal ion, wherein said compound is not saturated with oxygen, thereby removing oxygen from said fluid environment and increasing oxygen concentration in said container.
Claim 20
Dependent Claim
11 words
The method of claim 17 wherein said fluid environment is air.
Claim 21
Dependent Claim
11 words
The method of claim 17 wherein said fluid environment is water.
Claim 22
Dependent Claim
28 words
The method of claim 19 wherein said water flows past said first surface of said membrane and said carrier fluid circulates past said second surface of said membrane.
Claim 23
Dependent Claim
29 words
The method of claim 17 wherein said compound is present at a concentration capable of binding at least 340 milligrams of oxygen per liter of carrier fluid when saturated.
Claim 24
Dependent Claim
16 words
The method of claim 21 wherein said compound is a heme complexed with a nitrogenous base.
Claim 25
Dependent Claim
11 words
The method of claim 22 wherein said nitrogenous base is 1-methylimidazole.
Claim 26
Dependent Claim
13 words
The method of claim 23 wherein said nitrogenous base is said carrier fluid.
Claim 27
Dependent Claim
14 words
The method of claim 24 wherein said membrane is a silicone rubber-polysulfone composite membrane.
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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) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |