US3476513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the conversion of so2 in flue gas to sulfur
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-08-25
•
Granted: 1969-11-04
•
Expires: 1986-08-25
Abstract
No abstract record available.
Inventors
- 👤 Albert B Welty Jr
- 👤 Russell R Johnson
- 👤 Glenn A Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:43
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609; C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/0473; C01B17/0478
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA596613A
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US1771481A
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US1967263A
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US1941702A
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US2551905A
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US2631921A
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US2799359A
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GB717482A
Cited
US2813699A
Cited
US2902432A
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US2887363A
Cited
US3197284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |