US2634826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation of carbondioxide and ammonia
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1951-02-08
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Granted: 1953-04-14
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Expires: 1971-02-08
Abstract
No abstract record available.
Inventors
- 👤 Cramer Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:45
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/12; C01B; C01B32/00; C01B32/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS FOR SEPARATING, BY SELECTIVE ABSORPTION, AMMONIA FROM CARBON DIOXIDE FROM GASEOUS MIXTURES CONTAINING SAID COMPONENTS WHICH COMPRISES EFFECTING THE SELECTIVE ABSORPTION OF AMMONIA BY MEANS OF AN AQUEOUS SOLUTION OF UREA NITRATE.
Claim 2
Dependent Claim
34 words
A PROCESS FOR SEPARATING, BY SELECTIVE ABSORPTION, AMMONIA FROM CARBON DIOXIDE FROM GASEOUS MIXTURES CONTAINING SAID COMPONENTS WHICH COMPRISES EFFECTING THE SELECTIVE ABSORPTION OF AMMONIA BY MEANS OF AN AQUEOUS SOLUTION OF UREA NITRATE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |