US2270903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating gases with pulverulent substances
Assignee: Bamag Meguin AG
•
Filing: 1939-07-05
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Granted: 1942-01-27
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Expires: 1959-07-05
Abstract
No abstract record available.
Inventors
- 👤 Rudbach Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:00
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; B01J8/30; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/10; B01D53/12; B01D53/26; B01D53/261; B01D53/34; B01D53/46; B01D53/72; B01D53/74; B01D53/81; B01D53/83; B01J8/0015; B01J8/0045; B01J8/1881; B01J8/189; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/106; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2257/80; B01D2258/00; B01D2258/02; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40086
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) | 1945-01-26 | 1945-07-28 | 1946-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-26 | 1949-07-28 | 1950-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-26 | 1953-07-28 | 1954-01-27 | $7700.00 | Window Closed / Lapsed |