US3598529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting hydrogen sulfide and sulfur dioxide to elemental sulfur
Assignee: IFP Energies nouvelles
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Filing: 1969-02-19
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Granted: 1971-08-10
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Expires: 1989-02-19
Abstract
Abstract HYDROGEN SULDIDE IS REACTED WITH SULFUR DIOXIDE TO FORM ELEMENTAL SULFUL IN THE PERSENCE OF A SOLVENT CONTAINING AN ALKALI OR ALKALINE METAL SALT AND AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF ORGANIC MONOCARBOXYLIC ACIDS, POLYCARBOXYLIC ACIDS OR PARTIAL ESTERS THEREOF.
Inventors
- 👤 Andre Deschamps
- 👤 Philippe Renault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:28
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 0
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |