US2951883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for carrying out reactions which proceed endothermically in fluidized layers
Assignee: BASF SE
•
Filing: 1956-09-14
•
Granted: 1960-09-06
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Kroeper Hugo
- 👤 Wirth Friedrich
- 👤 Platz Rolf
- 👤 Floerchinger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A PROCESS OF CARRYING OUT AN ENDOTHERMIC REACTION IN A FLUIDIZED LAYER OF FINELY DIVIDED SOLID PARTICLES, THE IMPROVEMENT WHICH COMPRISES SUPPLYING HEAT TO SUPPORT SAID ENDOTHERMIC REACTION BY INTRODUCING A COMBUSTIBLE GAS AND AIR IN SEPARATE STREAMS INTO A COMBUSTION ZONE CONTAINED WITHIN AND IN INDIRECT HEAT EXCHANGE WITH SAID FLUIDIZED LAYER AND BURNING SAID COMBUSTIBLE GAS IN THE INTERIOR OF THE AIR STREAM TO FORM A DIFFUSION FLAME SUBSTANTIALLY THROUGHOUT SAID COMBUSTION ZONE, WHEREBY A SUBSTANTIALLY UNIFORM HEAT OF COMBUSTION IS TRANSFERRED SUBSTANTIALLY UNIFORMLY THROUGHOUT SAID FLUIDIZED LAYER.
Claim 2
Dependent Claim
91 words
IN A PROCESS OF CARRYING OUT AN ENDOTHERMIC REACTION IN A FLUIDIZED LAYER OF FINELY DIVIDED SOLID PARTICLES, THE IMPROVEMENT WHICH COMPRISES SUPPLYING HEAT TO SUPPORT SAID ENDOTHERMIC REACTION BY INTRODUCING A COMBUSTIBLE GAS AND AIR IN SEPARATE STREAMS INTO A COMBUSTION ZONE CONTAINED WITHIN AND IN INDIRECT HEAT EXCHANGE WITH SAID FLUIDIZED LAYER AND BURNING SAID COMBUSTIBLE GAS IN THE INTERIOR OF THE AIR STREAM TO FORM A DIFFUSION FLAME SUBSTANTIALLY THROUGHOUT SAID COMBUSTION ZONE, WHEREBY A SUBSTANTIALLY UNIFORM HEAT OF COMBUSTION IS TRANSFERRED SUBSTANTIALLY UNIFORMLY THROUGHOUT SAID FLUIDIZED LAYER.
References Cited (Backward Citations)
US2340878A
Cited
US2376308A
Cited
US2408600A
Cited
US2432934A
Cited
US2464501A
Cited
US2543884A
Cited
US2533945A
Cited
US2698171A
Cited
US2768937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |