US3026181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus production
Assignee: MW Kellogg Co
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Filing: 1959-11-27
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Granted: 1962-03-20
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Expires: 1979-11-27
Abstract
No abstract record available.
Inventors
- 👤 Warren C Schreiner
- 👤 Donald E Loudon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/003; C01B25/01; C01B25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A PROCESS FOR THE PRODUCTION OF PHOSPHORUS WHICH COMPRISES: FLOWING A FLUID HYDROCARBON THROUGH A CRACKING ZONE CONTAINING A MASS OF FINELY DIVIDED PHOSPHATE ROCK TO MAINTAIN SAID PHOSPHATE ROCK IN A FLUIDIZED CONDITION; INTRODUCING PREHEATED INERT SOLIDS INTO SAID CRACKING ZONE INTO CONTACT WITH SAID FLUIDIZED MASS OF PHOSPHATE ROCK TO MAINTAIN SAID FLUIDIZED MASS AT A TEMPERATURE EFFECTIVE TO CAUSE CRACKING OF SAID HYDROCARBON WITH DEPOSITION OF CARBON ON SAID PHOSPHATE ROCK BUT BELOW TEMPERATURE AT WHICH SAID PHOSPHATE ROCK PARTICLES COLESCE AND AT WHICH SAID PHOSPHATE ROCK TO PHOSPHORUS; AND CONTACTING PHOSPHATE ROCK THUS COATED IN A REDUCTION ZONE WITH PREHEATED INERT SOLIDS TO HEAT SAID COATED PHOSPHATE ROCK TO A TEMPERATURE SUBSTANTIALLY HIGHER THAN SAID CRACKING TEMPERATURE AT WHICH SAID COATED PHOSPHATE ROCK PATICLES WOULD COALESCE BUT FOR SAID COATING OF CARBON THEREON AND EFFECTIVE TO REDUCE SAID COATED PHOSPHATE ROCK AND TO PRODUCE ELEMENTAL PHOSPHORUS AS A PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
156 words
A PROCESS FOR THE PRODUCTION OF PHOSPHORUS WHICH COMPRISES: FLOWING A FLUID HYDROCARBON THROUGH A CRACKING ZONE CONTAINING A MASS OF FINELY DIVIDED PHOSPHATE ROCK TO MAINTAIN SAID PHOSPHATE ROCK IN A FLUIDIZED CONDITION; INTRODUCING PREHEATED INERT SOLIDS INTO SAID CRACKING ZONE INTO CONTACT WITH SAID FLUIDIZED MASS OF PHOSPHATE ROCK TO MAINTAIN SAID FLUIDIZED MASS AT A TEMPERATURE EFFECTIVE TO CAUSE CRACKING OF SAID HYDROCARBON WITH DEPOSITION OF CARBON ON SAID PHOSPHATE ROCK BUT BELOW TEMPERATURE AT WHICH SAID PHOSPHATE ROCK PARTICLES COLESCE AND AT WHICH SAID PHOSPHATE ROCK TO PHOSPHORUS; AND CONTACTING PHOSPHATE ROCK THUS COATED IN A REDUCTION ZONE WITH PREHEATED INERT SOLIDS TO HEAT SAID COATED PHOSPHATE ROCK TO A TEMPERATURE SUBSTANTIALLY HIGHER THAN SAID CRACKING TEMPERATURE AT WHICH SAID COATED PHOSPHATE ROCK PATICLES WOULD COALESCE BUT FOR SAID COATING OF CARBON THEREON AND EFFECTIVE TO REDUCE SAID COATED PHOSPHATE ROCK AND TO PRODUCE ELEMENTAL PHOSPHORUS AS A PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |