US2992884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of sulfur oxides from gases
Assignee: Individual
•
Filing: 1959-10-07
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Granted: 1961-07-18
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Expires: 1979-10-07
Abstract
No abstract record available.
Inventors
- 👤 Bienstock Daniel
- 👤 Joseph H Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:10
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0404; C01B17/0408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD FOR THE REMOVAL OF ACIDIC OXYGENATED SULFUR COMPOUNDS FROM A HOT GAS WHICH COMPRISES CONTACTING THE HOT GAS WITH AN ABSORBENT MATERIAL COMPRISING AN ALKALI METAL OXIDE DISPERSED ON A CARRIER SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND CHROMIA, SAID ADSORBENT BEING PREPARED BY ADDING AN AQUEOUS SOLUTION OF AN ALKALI METAL CARBONATE TO AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND CHROMIUM SALTS TO FORM A PRECIPITATE, HEATING THE PRECIPITATE TO FORM THE OXIDES, AND THEN HEATING THE OXIDES IN THE PRESENCE OF HYDROGEN.
Claim 2
Independent Claim
94 words
A METHOD FOR THE REMOVAL OF ACIDIC OXYGENATED SULFUR COMPOUNDS FROM A HOT GAS WHICH COMPRISES CONTACTING THE HOT GAS WITH AN ABSORBENT MATERIAL COMPRISING AN ALKALI METAL OXIDE DISPERSED ON A CARRIER SELECTED FROM THE GROUP CONSISTING OF ALUMINA AND CHROMIA, SAID ADSORBENT BEING PREPARED BY ADDING AN AQUEOUS SOLUTION OF AN ALKALI METAL CARBONATE TO AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND CHROMIUM SALTS TO FORM A PRECIPITATE, HEATING THE PRECIPITATE TO FORM THE OXIDES, AND THEN HEATING THE OXIDES IN THE PRESENCE OF HYDROGEN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |