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US3524801A
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US
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Process for producing sulfuric acid from so2 containing waste gas
Assignee: Veolia WTS Systems USA Inc
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Filing: 1968-02-09
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Granted: 1970-08-18
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Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Edgardo J Parsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:22
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C25; C25B; C25B1/00; C25B1/01; C25B1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2768945A
Cited
US3135673A
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US3222267A
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US3165460A
Cited
US3433726A
Cited
US3344050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |