US2650084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcining lime bearing sludges
Assignee: Dorr Co
•
Filing: 1949-02-26
•
Granted: 1953-08-25
•
Expires: 1969-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frank S White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:31
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/32; C; C04; C04B; C04B2/00; C04B2/10; C04B2/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE PROCESS FOR RETAINING FINE SOLIDS IN AN INCANDESCENT FLUIDIZED BED FOR TREATMENT THEREIN
Claim 2
Dependent Claim
14 words
THE PROCESS FOR RETAINING FINE SOLIDS IN AN INCANDESCENT FLUIDIZED BED FOR TREATMENT THEREIN
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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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |