US3107149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating ammonia from carbon dioxide
Assignee: Chemical Processes of Ohio Inc
•
Filing: 1961-05-12
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Granted: 1963-10-15
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Theodore O Wentworth
- 👤 Jr Lawrence W Nisbet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:27
CPC Classifications
C; C07; C07C; C07C273/00; C07C273/02; C07C273/04; C01; C01B; C01B32/00; C01B32/50; C01C; C01C1/00; C01C1/02; C01C1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A METHOD FOR THE SEPARATION OF GASEOUS AMMONIA AT A PRESSURE OF ABOUT 70 P.S.I.A. TO ABOUT 280 P.S.I.A. AT WHICH PRESSURE AMMONIA IS CONDENSABLE WITH COOLING WATER, FROM A GASEOUS MIXTURE OF AMMONIAND CARBON
Claim 2
Independent Claim
35 words
A METHOD FOR THE SEPARATION OF GASEOUS AMMONIA AT A PRESSURE OF ABOUT 70 P.S.I.A. TO ABOUT 280 P.S.I.A. AT WHICH PRESSURE AMMONIA IS CONDENSABLE WITH COOLING WATER, FROM A GASEOUS MIXTURE OF AMMONIAND CARBON
References Cited (Backward Citations)
US2785045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |