Patent US2684283A successfully refreshed from Google Patents.
US2684283A
Expired / Lapsed
US
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Method of recovering dilute nitrogen oxides from gaseous mixtures
Assignee: Individual
•
Filing: 1950-09-21
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Granted: 1954-07-20
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Expires: 1970-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard A Ogg
- 👤 James D Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF CONVERTING NITRIC OXIDE DIRECTLY INTO A SODIUM NITRATE WHICH COMPRISES CONTACTING THE NITRIC OXIDE IN THE PRESENCE OF FREE OXYGEN WITH A MASS OF FERRIC OXIDE AND SODIUM OXIDE CONTAINING AT LEAST ONE MOLE OF FERRIC OXIDE FOR EVERY MOLE OF SODIUM OXIDE, AT TEMPERATURES WITHIN THE RANGE OF FROM 300* C. TO 500* C.
Claim 2
Independent Claim
58 words
THE METHOD OF CONVERTING NITRIC OXIDE DIRECTLY INTO A SODIUM NITRATE WHICH COMPRISES CONTACTING THE NITRIC OXIDE IN THE PRESENCE OF FREE OXYGEN WITH A MASS OF FERRIC OXIDE AND SODIUM OXIDE CONTAINING AT LEAST ONE MOLE OF FERRIC OXIDE FOR EVERY MOLE OF SODIUM OXIDE, AT TEMPERATURES WITHIN THE RANGE OF FROM 300* C. TO 500* C.
References Cited (Backward Citations)
US763941A
Cited
US921975A
Cited
US1115164A
Cited
US1207706A
Cited
GB145824A
Cited
US1798533A
Cited
GB327047A
Cited
US2041504A
Cited
US2115173A
Cited
US2419255A
Cited
US2503963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |