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Patent US3345802A successfully refreshed from Google Patents.
US3345802A
Expired / Lapsed
US
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Recovery of cs2 from absorbing oil
Assignee: PPG Industries Inc
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Filing: 1966-12-07
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Granted: 1967-10-10
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Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Howard F Wyatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:37
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF RECOVERING CS2 FROM A GASEOUS CS2-H2S MIXTURE PRODUCED BY REACTING A SULFUR SOURCE WITH HYDROCARBON WHICH COMPRISES CONTACTING SAID MIXTURE IN AN ABSORBING ZONE WITH OIL AT AN INITIAL TEMPERATURE BELOW ABOUT 120*F. THEREBY ABSORBING CS2 IN THE OIL TO THE SUBSTANTIAL EXCLUSION OF H2S, MAINTAINING THE TEMPERATURE OF THE OIL-CS2 MIXTURE IN SAID ABSORBING ZONE BELOW ABOUT 180*F., HEATING SAID OIL-CS2 MIXTURE TO REDUCE ITS CAPACITY TO ABSORB CS2 AND CONTACTING SAID HEATED OIL WITH SUFFICIENT H2S TO STRIP SUBSTANTIALLY ALL OF THE CS2 FROM THE OIL THEREBY OBTAINING A GASEOUS CS2-H2S MIXTURE SUBSTANTIALLY RICHER WITH RESPECT TO CS2 THAN THE FIRSTNAMED CS2-H2S MIXTURE.
Claim 2
Independent Claim
108 words
THE METHOD OF RECOVERING CS2 FROM A GASEOUS CS2-H2S MIXTURE PRODUCED BY REACTING A SULFUR SOURCE WITH HYDROCARBON WHICH COMPRISES CONTACTING SAID MIXTURE IN AN ABSORBING ZONE WITH OIL AT AN INITIAL TEMPERATURE BELOW ABOUT 120*F. THEREBY ABSORBING CS2 IN THE OIL TO THE SUBSTANTIAL EXCLUSION OF H2S, MAINTAINING THE TEMPERATURE OF THE OIL-CS2 MIXTURE IN SAID ABSORBING ZONE BELOW ABOUT 180*F., HEATING SAID OIL-CS2 MIXTURE TO REDUCE ITS CAPACITY TO ABSORB CS2 AND CONTACTING SAID HEATED OIL WITH SUFFICIENT H2S TO STRIP SUBSTANTIALLY ALL OF THE CS2 FROM THE OIL THEREBY OBTAINING A GASEOUS CS2-H2S MIXTURE SUBSTANTIALLY RICHER WITH RESPECT TO CS2 THAN THE FIRSTNAMED CS2-H2S MIXTURE.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |