Patent US3254976A successfully refreshed from Google Patents.
US3254976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method op and device for degasifying fuel dust, especially coal dust
Assignee: —
•
Filing: —
•
Granted: 1966-06-07
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:45
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A DEVICE FOR DEGASIFYING FUEL DUST PARTICLES IN SUSPENSION IN A GASEOUS CARRYING MEANS WHICH INCLUDES: A PRETREATMENT CHAMBER FOR OXIDIZING THE SURFACE ONLY OF THE FUEL DUST PARTICLES SUSPENDED IN THE GASEOUS CARRYING MEANS, A DEGASIFYING CHAMBER COMMUNICATING WITH SAID PRE-TREATMENT CHAMBER FOR RECEIVING THE PRE-TREATED FUEL DUST PARTICLES THEREFROM SUSPENDED IN A CARRIER GAS, SAID DEGASIFYING CHAMBER BEING PROVIDED WITH A JACKET WHICH AT ITS UPPER END OPENS INTO THE DEGASIFYING CHAMBER AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |