Patent US1834577A successfully refreshed from Google Patents.
Patent US2863732A successfully refreshed from Google Patents.
US2863732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water treatment
Assignee: Sunoco Inc
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Filing: 1955-02-04
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Granted: 1958-12-09
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Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Rolland G Bowers
- 👤 Jr Edward F Mohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:40
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN PETROLEUM REFINERY PROCESSES WHERE WATER CONTACTS PETROLEUM FRACTIONS CONTAINING INORGANIC MATERIALS FORMED BY DECOMPOSITION OF ORGANIC SULFUR AND NITROGEN COMPOUNDS, AND WHERE ALKALINE WATER CONTAINING AMMONIUM SULFIDE AND AMMONIUM BISULFIDE IS SEPARATED FROM THE PETROLEUM FRACTIONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID ALKALINE WATER WITH SULFUR DIOXIDE AS SUBSTANTIALLY THE SOLE NEUTRALIZING AGENT, THEREBY TO CONVERT SUBSTANTIALLY ALL OF SAID AMMONIUM SULFIDE AND AMMONIUM BISULFIDE TO MATERIALS INCLUDING FREE SULFUR AND TO REDUCE THE PH OF THE WATER TO BELOW 6, AND SEPARATING BY SETTLING FROM THE TREATED WATER AT PH BELOW 6 A MATERIAL CONSISTING ESSENTIALLY OF SUBSTANTIALLY ALL OF SAID FREE SULFUR.
Claim 2
Dependent Claim
105 words
IN PETROLEUM REFINERY PROCESSES WHERE WATER CONTACTS PETROLEUM FRACTIONS CONTAINING INORGANIC MATERIALS FORMED BY DECOMPOSITION OF ORGANIC SULFUR AND NITROGEN COMPOUNDS, AND WHERE ALKALINE WATER CONTAINING AMMONIUM SULFIDE AND AMMONIUM BISULFIDE IS SEPARATED FROM THE PETROLEUM FRACTIONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID ALKALINE WATER WITH SULFUR DIOXIDE AS SUBSTANTIALLY THE SOLE NEUTRALIZING AGENT, THEREBY TO CONVERT SUBSTANTIALLY ALL OF SAID AMMONIUM SULFIDE AND AMMONIUM BISULFIDE TO MATERIALS INCLUDING FREE SULFUR AND TO REDUCE THE PH OF THE WATER TO BELOW 6, AND SEPARATING BY SETTLING FROM THE TREATED WATER AT PH BELOW 6 A MATERIAL CONSISTING ESSENTIALLY OF SUBSTANTIALLY ALL OF SAID FREE SULFUR.
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |