US2829113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitrogen and hydrogen for ammonia synthesis
Assignee: MW Kellogg Co
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Filing: 1953-10-14
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Granted: 1958-04-01
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Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 Martin J Barry
- 👤 Theodore S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:17
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
A PROCESS FOR THE PRODUCTION OF AMMONIA SYNTHESIS GAS UNDER SUPERATMOSPHERIC PRESSURE WHICH COMPRISES REFORMING A HYDROCARBON WITH STEAM IN A FIRST INDIRECTLY HEATED TUBULAR REFORMING ZONE AT A PRESSURE OF ABOUT 15 TO ABOUT 125 P.S.I.G. AND AT A TEMPERATURE OF ABOUT 1250*F. TO ABOUT 1450*F. TO OBTAIN ABOUT 60 TO 80% CONVERSION OF SAID HYDROCARBON, CONTACTING THE REACTION PRODUCT FROM THE FIRST REFORMING ZONE AT A PRESSURE OF ABOUT 15 TO ABOUT 125 P.S.I.G. WITH STEAM AND AIR UNDER SUITABLE REFORMING CONDITIONS TO OBTAIN SUBSTANTIALLY COMPLETE CONVERSION TO A REACTION PRODUCT CONTAINING NITROGEN IN THE APPROPRIATE QUANTITIES FOR AMMONIA SYNTHESIS AND CARBON MONOXIDE, CONTACTING THE PRODUCT GAS FROM THE SECOND REFORMING ZONE WITH A SERIES
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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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |