US3042483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating carbon dioxide from gas mixtures
Assignee: Hoechst AG
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Filing: 1959-07-23
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Granted: 1962-07-03
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Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 Wolfram Arthur
- 👤 Kaltenhauser Herbert
- 👤 Lorenz Harald
- 👤 Relken Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/14; C10K1/143; B; B01; B01D; B01D47/00; B01D53/00; B01D53/14; B01D53/1456; B01D53/1475; B01D53/34; B01D53/46; B01D53/62; C01; C01B; C01B32/00; C01B32/50; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P20/00; Y02P20/151; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A PROCESS FOR THE SUBSTANTIAL REMOVAL OF CARBON DIOXIDE FROM GAS MIXTURES BY ABSORBING THE CARBON DIOXIDE FROM SAID GAS MIXTURES IN A CONCENTRATED AQUEOUS SOLUTION OF AN ALKALI METAL SALT OF AN AMINO ACID WHICH HAS AT LEAST ONE HYDROGEN ATOM BOUND TO NITROGEN AND, THEREFORE, IS CAPABLE OF FORMING A CARBAMIC ACID WITH CARBON DIOXIDE, AND THEN DESORBING THE ABSORBED CARBON DIOXIDE FROM SAID SOLUTION, THE IMPROVEMENT WHICH COMPRISES DESORBING THAT PART OF THE ABSORBED CARBON DIOXIDE WHICH IS IN EXCESS OF A CONCENTRATION OF CARBON DIOXIDE OF 0.1 TO 0.2 MOL OF CARBON DIOXIDE PER MOL OF DISSOLVED SALT OF SAID AMINO ACID, AND AGAIN ABSORBING CARBON DIOXIDE, AT A TEMPERATURE BELOW 60*C., IN THE REGENERATED SOLUTION, TO GIVE A TOTAL AMOUNT OF CARBON DIOXIDE IN THE RANGE FROM 0.5 TO 1.1 MOLS OF CARBON DIOXIDE PER MOL OF DISSOLVED SALT.
Claim 2
Dependent Claim
145 words
IN A PROCESS FOR THE SUBSTANTIAL REMOVAL OF CARBON DIOXIDE FROM GAS MIXTURES BY ABSORBING THE CARBON DIOXIDE FROM SAID GAS MIXTURES IN A CONCENTRATED AQUEOUS SOLUTION OF AN ALKALI METAL SALT OF AN AMINO ACID WHICH HAS AT LEAST ONE HYDROGEN ATOM BOUND TO NITROGEN AND, THEREFORE, IS CAPABLE OF FORMING A CARBAMIC ACID WITH CARBON DIOXIDE, AND THEN DESORBING THE ABSORBED CARBON DIOXIDE FROM SAID SOLUTION, THE IMPROVEMENT WHICH COMPRISES DESORBING THAT PART OF THE ABSORBED CARBON DIOXIDE WHICH IS IN EXCESS OF A CONCENTRATION OF CARBON DIOXIDE OF 0.1 TO 0.2 MOL OF CARBON DIOXIDE PER MOL OF DISSOLVED SALT OF SAID AMINO ACID, AND AGAIN ABSORBING CARBON DIOXIDE, AT A TEMPERATURE BELOW 60*C., IN THE REGENERATED SOLUTION, TO GIVE A TOTAL AMOUNT OF CARBON DIOXIDE IN THE RANGE FROM 0.5 TO 1.1 MOLS OF CARBON DIOXIDE PER MOL OF DISSOLVED SALT.
References Cited (Backward Citations)
US2011386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |