US3411864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing suspended acidic or alkaline pulverulent particles from gases
Assignee: Waagner Biro AG
•
Filing: 1964-07-09
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Granted: 1968-11-19
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Pallinger Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:29
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; B; B01; B01D; B01D47/00; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1221505A
Cited
GB435560A
Cited
US2718453A
Cited
US2919174A
Cited
US2877086A
Cited
US3310365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |