Patent US2733979A successfully refreshed from Google Patents.
US2733979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Haensel
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:16
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR REMOVING HYDROGEN SULFIDE FROM A GASEOUS STREAM CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID STREAM IN AN ABSORPTION ZONE WITH A FINELY DIVIDED IRON OXIDE CARRIED IN SUSPENSION IN POLYHYDRIC ALCOHOL, THEREBY FORMING IRON SULFIDE AND WATER AND ABSORBING THE WATER IN SAID POLYHYDRIC ALCOHOL, REMOVING THE RESULTANT MIXTURE OF POLYHYDRIC ALCOHOL, IRON SULFIDE AND WATER FROM SAID ZONE, HEATING AND CONTACTING SAID MIXTURE WITH OXYGEN TO REMOVE THE WATER AND OXIDIZE SAID IRON SULFIDE TO THE OXIDE, AND RETURNING THE THUS REGENERATED OXIDE-CONTAINING POLYHYDRIC ALCOHOL TO THE ABSORPTION ZONE FOR REUSE IN THE PROCESS.
Claim 2
Dependent Claim
98 words
A PROCESS FOR REMOVING HYDROGEN SULFIDE FROM A GASEOUS STREAM CONTAINING THE SAME WHICH COMPRISES CONTACTING SAID STREAM IN AN ABSORPTION ZONE WITH A FINELY DIVIDED IRON OXIDE CARRIED IN SUSPENSION IN POLYHYDRIC ALCOHOL, THEREBY FORMING IRON SULFIDE AND WATER AND ABSORBING THE WATER IN SAID POLYHYDRIC ALCOHOL, REMOVING THE RESULTANT MIXTURE OF POLYHYDRIC ALCOHOL, IRON SULFIDE AND WATER FROM SAID ZONE, HEATING AND CONTACTING SAID MIXTURE WITH OXYGEN TO REMOVE THE WATER AND OXIDIZE SAID IRON SULFIDE TO THE OXIDE, AND RETURNING THE THUS REGENERATED OXIDE-CONTAINING POLYHYDRIC ALCOHOL TO THE ABSORPTION ZONE FOR REUSE IN THE PROCESS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |