Patent US3095275A successfully refreshed from Google Patents.
US3095275A
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Preparation of elemental sulfur from hydrogen sulfide
Assignee: Pure Oil Co
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Filing: 1960-12-22
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Granted: 1963-06-25
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Expires: 1980-12-22
Abstract
No abstract record available.
Inventors
- 👤 William L Fierce
- 👤 Roger L Weichman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:46
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF CONVERTING HYDROGEN SULFIDE TO ELEMENTAL SULFUR WHICH COMPRISES PASSING HYDROGEN SULFIDE-CONTAINING GAS THROUGH A SOLUTION OF A NITROGEN DIOXIDE COMPLEX, SAID NITROGEN DIOXIDE COMPLEX BEING AN ADDITION COMPOUND OF NITROGEN DIOXIDE AND A COMPOUND OTHER THAN EITHER NITROGEN DIOXIDE OR WATER, WHEREBY HYDROGEN SULFIDE IS OXIDIZED TO ELEMENTAL SULFUR AND WATER WITH NITRIC OXIDE BEING FORMED AS A BY-PRODUCT, AND SEPARATING ELEMENTAL SULFUR PRECIPITATED IN SAID SOLUTION.
Claim 2
Independent Claim
70 words
A METHOD OF CONVERTING HYDROGEN SULFIDE TO ELEMENTAL SULFUR WHICH COMPRISES PASSING HYDROGEN SULFIDE-CONTAINING GAS THROUGH A SOLUTION OF A NITROGEN DIOXIDE COMPLEX, SAID NITROGEN DIOXIDE COMPLEX BEING AN ADDITION COMPOUND OF NITROGEN DIOXIDE AND A COMPOUND OTHER THAN EITHER NITROGEN DIOXIDE OR WATER, WHEREBY HYDROGEN SULFIDE IS OXIDIZED TO ELEMENTAL SULFUR AND WATER WITH NITRIC OXIDE BEING FORMED AS A BY-PRODUCT, AND SEPARATING ELEMENTAL SULFUR PRECIPITATED IN SAID SOLUTION.
References Cited (Backward Citations)
US1313370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |