US2907651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the economic utilization of waste carbonaceous material of fuel ashes, and the resulting products
Assignee: Reading Anthracite Co
•
Filing: 1954-09-21
•
Granted: 1959-10-06
•
Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 James H Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
C; C22; C22C; C22C28/00; C22B; C22B4/00; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD FOR PRODCING ALLOYS COMPRISING INTRODUCING A MIXTURE OF A COMMINUTED CARBONACEOUS SUPPLEMENT AND COAL ASH CONTAINING MINERAL OXIDES OF WHICH SILICA, ALUMINA, IRON OXIDE AND TITANIUM DIOXIDE ARE THE PRINCIPAL OXIDES PRESENT, INTO AN ELECTRIC ARE AT A TEMPERATURE OF AT LEAST ABOUT 2200*C. SAID CARBONACEOUS SUPPLEMENT BEING PRESENT IN AN AMOUNT OF FROM 50% TO 90% BY WEIGHT OF THE AMOUNT NECESSARY TO REDUCE THE OXIDES, WHCIH AMOUNT IS SUFFICIENT TO MAINTAIN THE CHARGE IN POROUS CONDITION AND TO PREVENT THE COALESCING OF THE SLAG FORMED DURING THE LIQUEFACTION OF THE SLAG AND AN ALLOY OF 39-68% SILICON, 24-47% ION AND 8-14% TITANIUM IS RECOVERED AND AN ABRASIVE CRYSTALLINE BY-PRODUCT, CONSISTING ESSENTIALLY OF SILICONE CARBIDE, MULTIE AND BETA CRISTOBALIATE IS PRODUCED.
Claim 2
Independent Claim
124 words
A METHOD FOR PRODCING ALLOYS COMPRISING INTRODUCING A MIXTURE OF A COMMINUTED CARBONACEOUS SUPPLEMENT AND COAL ASH CONTAINING MINERAL OXIDES OF WHICH SILICA, ALUMINA, IRON OXIDE AND TITANIUM DIOXIDE ARE THE PRINCIPAL OXIDES PRESENT, INTO AN ELECTRIC ARE AT A TEMPERATURE OF AT LEAST ABOUT 2200*C. SAID CARBONACEOUS SUPPLEMENT BEING PRESENT IN AN AMOUNT OF FROM 50% TO 90% BY WEIGHT OF THE AMOUNT NECESSARY TO REDUCE THE OXIDES, WHCIH AMOUNT IS SUFFICIENT TO MAINTAIN THE CHARGE IN POROUS CONDITION AND TO PREVENT THE COALESCING OF THE SLAG FORMED DURING THE LIQUEFACTION OF THE SLAG AND AN ALLOY OF 39-68% SILICON, 24-47% ION AND 8-14% TITANIUM IS RECOVERED AND AN ABRASIVE CRYSTALLINE BY-PRODUCT, CONSISTING ESSENTIALLY OF SILICONE CARBIDE, MULTIE AND BETA CRISTOBALIATE IS PRODUCED.
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |