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Patent US2606875A successfully refreshed from Google Patents.
US2606875A
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US
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Controlled atmosphere
Assignee: Baker and Co Inc
•
Filing: 1949-03-29
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Granted: 1952-08-12
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Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Edgar F Rosenblatt
- 👤 Johan G Cohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:02
CPC Classifications
C; C01; C01B; C01B3/00; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/44; C01B21/00; C01B21/02; C01B21/20; C01B21/24; C01B21/26; C01B21/38; C01B21/40; C01B3/02; C01B3/025; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF PROVIDING A CONTROLLED ATMOSPHERE, COMPRISING PASSING A MIXTURE OF GASEOUS AMMONIA AND OXYGEN CONTAINING GAS, WHEREIN THE MOLECULAR RATIO OF AMMONIA TO OXYGEN IS GREATER THAN 4:3, OVER A SUPPORTED CATALYST, WHEREIN THE CATALYST METAL IS PRIMARILY PLATINUM, TO CONVERT THE AMMONIA TO NITROGEN AND HYDROGEN AND WATER VAPOR, SAID MIXTURE PASSING OVER SAID CATALYST AT A TEMPERATURE OF AT LEAST 500* C., STRIPPING THE REACTED MIXTURE FROM WATER VAPOR, ADDING TO THE GASES REMAINING AFTER THE STRIPPING STEP AN OXYGEN CONTAINING GAS, AND PASSING THE RESULTING GASEOUS MIXTURE FROM SAID ADDING STEP OVER A SUPPORTED CATALYST HEATED TO AT LEAST ABOUT 100* C., WHEREIN THE CATALYST METAL IS PRIMARILY PALLADIUM, TO ELIMINATE AT LEAST SOME HYDROGEN AND SUBSTANTIALLY ALL OXIDES OF NITROGEN FORMED DURING THE OXIDATION OF SAID AMMONIA.
Claim 2
Independent Claim
133 words
THE METHOD OF PROVIDING A CONTROLLED ATMOSPHERE, COMPRISING PASSING A MIXTURE OF GASEOUS AMMONIA AND OXYGEN CONTAINING GAS, WHEREIN THE MOLECULAR RATIO OF AMMONIA TO OXYGEN IS GREATER THAN 4:3, OVER A SUPPORTED CATALYST, WHEREIN THE CATALYST METAL IS PRIMARILY PLATINUM, TO CONVERT THE AMMONIA TO NITROGEN AND HYDROGEN AND WATER VAPOR, SAID MIXTURE PASSING OVER SAID CATALYST AT A TEMPERATURE OF AT LEAST 500* C., STRIPPING THE REACTED MIXTURE FROM WATER VAPOR, ADDING TO THE GASES REMAINING AFTER THE STRIPPING STEP AN OXYGEN CONTAINING GAS, AND PASSING THE RESULTING GASEOUS MIXTURE FROM SAID ADDING STEP OVER A SUPPORTED CATALYST HEATED TO AT LEAST ABOUT 100* C., WHEREIN THE CATALYST METAL IS PRIMARILY PALLADIUM, TO ELIMINATE AT LEAST SOME HYDROGEN AND SUBSTANTIALLY ALL OXIDES OF NITROGEN FORMED DURING THE OXIDATION OF SAID AMMONIA.
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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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |