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Patent US2954272A successfully refreshed from Google Patents.
US2954272A
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Method of separating ammonia from a gas containing ammonia and carbon dioxide
Assignee: Chemical Construction Corp
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Filing: 1954-03-23
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Granted: 1960-09-27
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Felix A Schaufelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:12
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/105; B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; C01; C01C; C01C1/00; C01C1/02; C01C1/12; Y; Y02; Y02P; Y02P20/00; Y02P20/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF SEPARATING AMMONIA FROM CARBON DIOXIDE WHICH COMPRISES SCRUBBING A GAS CONTAINING AMMONIA AND CARBON DIOXIDE WITH AN AQUEOUS DISPERSION OF AN AMMINE SALT COMPLEX OF A METAL SELECTED FROM THE GROUP NICKEL, COBALT, COPPER, ZINC AND CADMIUM CONTAINING NOT MORE THAN 4 COORDINATING AMMONIA GROUPS AND HAVING AT LEAST AN EQUIMOLECULAR QUANTITY OF AMMONIA COMBINED AS AN AMMONIUM SALT OF A STRONG INORGANIC ACID DISSOLVED
Claim 2
Independent Claim
68 words
A METHOD OF SEPARATING AMMONIA FROM CARBON DIOXIDE WHICH COMPRISES SCRUBBING A GAS CONTAINING AMMONIA AND CARBON DIOXIDE WITH AN AQUEOUS DISPERSION OF AN AMMINE SALT COMPLEX OF A METAL SELECTED FROM THE GROUP NICKEL, COBALT, COPPER, ZINC AND CADMIUM CONTAINING NOT MORE THAN 4 COORDINATING AMMONIA GROUPS AND HAVING AT LEAST AN EQUIMOLECULAR QUANTITY OF AMMONIA COMBINED AS AN AMMONIUM SALT OF A STRONG INORGANIC ACID DISSOLVED
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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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |