US3552033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion nozzle for solids fluidizing apparatus
Assignee: Dorr Oliver Inc
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Filing: 1968-09-03
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Granted: 1971-01-05
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Expires: 1988-09-03
Abstract
Abstract IMPROVED NONSIFTING HIGH CAPACITY NOZZLE FOR DIFFUSION OF A FLUIDIZING GAS UPWARDLY THROUGH THE CONSTRICTION PLATE OF A SOLIDS FLUIDIZING APPARATUS, FEATURING A NOZZLE HEAD HAVING A RADIALLY DIRECTED GAS PASSAGES IN MULTILEVEL ARRANGEMENT, WITH INTERNAL GRADUATED FLOW CONSTRICTING MEANS SO CONSTRUCTED AND ARRANGED THAT PRESSURE DIFFERENTIALS BETWEEN THE PASSAGE OF THE UPPER LEVEL AND THE PASSAGE OF THE LOWER LEVEL ARE COMPENSATED FOR.
Inventors
- 👤 Andrew B Steever
- 👤 Richard E Svencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:40
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44; B01J8/1818
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |