US3118734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid bed method of producing phosphorus
Assignee: FMC Corp
•
Filing: 1961-11-27
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Granted: 1964-01-21
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Charles B Miles
- 👤 Jr Frank M Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:26
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; C; C01; C01B; C01B25/00; C01B25/003; C01B25/01; C01B25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF PRODUCING PHOSPHORUS FROM PHOSPHATIC SHALES WHICH COMPRISES FEEDING -10 TYLER MESH PHOSPHATIC SHALE PARTICLES INTO A FLUID BED HAVING PARTICLE SIZE OF ABOUT 4 TO 325 TYLER MESH, SAID BED CONTAINING ELECTRODES IMMERSED THEREIN, HEATING SAID BED TO A TEMPERATURE OF 1100* TO 1300*C. BY MAINTAINING AN ELECTRIC CURRENT THROUGH SAID FLUID BED BY MEANS OF SAID ELECTRODES, PASSING A HYDROCARBON GAS IN CONDUCT WITH SAID ORE PARTICLES, CRACKING THE HYDROCARBON GAS WITHIN SAID FLUID BED DERIVED FROM THE CRACKED HYDROCARBON IN THE AMOUNT OF ABOUT 15% TO 25% OF THE WEIGHT OF SAID FLUID BED, EVOLVING PHOSPHORUS GAS AND OTHER PRODUCTS OVERHEAD AND FORMING PARTICULATE CALCIUM SILICATE WITHIN SAID FLUID BED, REMOVING THE PARTICULATE CALCIUM SILICATE, AND RECOVERING SAID GASOUS PRODUCTS.
Claim 2
Independent Claim
125 words
THE METHOD OF PRODUCING PHOSPHORUS FROM PHOSPHATIC SHALES WHICH COMPRISES FEEDING -10 TYLER MESH PHOSPHATIC SHALE PARTICLES INTO A FLUID BED HAVING PARTICLE SIZE OF ABOUT 4 TO 325 TYLER MESH, SAID BED CONTAINING ELECTRODES IMMERSED THEREIN, HEATING SAID BED TO A TEMPERATURE OF 1100* TO 1300*C. BY MAINTAINING AN ELECTRIC CURRENT THROUGH SAID FLUID BED BY MEANS OF SAID ELECTRODES, PASSING A HYDROCARBON GAS IN CONDUCT WITH SAID ORE PARTICLES, CRACKING THE HYDROCARBON GAS WITHIN SAID FLUID BED DERIVED FROM THE CRACKED HYDROCARBON IN THE AMOUNT OF ABOUT 15% TO 25% OF THE WEIGHT OF SAID FLUID BED, EVOLVING PHOSPHORUS GAS AND OTHER PRODUCTS OVERHEAD AND FORMING PARTICULATE CALCIUM SILICATE WITHIN SAID FLUID BED, REMOVING THE PARTICULATE CALCIUM SILICATE, AND RECOVERING SAID GASOUS PRODUCTS.
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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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |