US3510253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing sulfur dioxide from gases
Assignee: Individual
•
Filing: 1965-12-06
•
Granted: 1970-05-05
•
Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Volker Fattinger
- 👤 Walter Jager
- 👤 Gerd Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; B01D53/508; C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/60; C01C; C01C1/00; C01C1/22; C01C1/24; C01C1/245; C01C1/246; C01C1/247
Claims Analysis
Total Claims: 0
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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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |