US3436192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic apparatus for removing sulphur dioxide from flue gas
Assignee: Alstom Power Inc
•
Filing: 1964-06-22
•
Granted: 1969-04-01
•
Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Per Hilmer Karlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:04
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/0205; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609; B01J; B01J8/00; B01J8/02; B01J8/0207; C; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/80; C01B17/803; F01N13/00; F01N13/009; F01N3/01; F01N3/021; F01N3/033; F01N3/035; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/2006; F01N3/206; F01N3/24; F01N3/28; F01N3/2803; F01N3/2832; F01N3/2839; F01N3/2846; F01N3/2892; F01N2240/00; F01N2240/02; F01N2240/04; F01N2260/00; F01N2260/04; F01N2290/00; F01N2290/02; F01N2290/06; F01N2450/00; F01N2450/04; F01N2570/00; F01N2570/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |