US3010796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace operation
Assignee: Monsanto Chemicals Ltd
•
Filing: 1959-01-12
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Granted: 1961-11-28
•
Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 John R Alexander
- 👤 Frank P Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:29
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A METHOD FOR REDUCING CARBON ELECTRODE CONSUMPTION DURING THE ELECTRIC FURNACE PRODUCTION OF ELEMENTAL PHOSPHORUS FROM PHOSPHATE ROCK, WHICH METHOD COMPRISES CONTINUOUSLY INTRODUCING INTO THE ELECTRIC FURNACE THROUGH THE INTERIOR OF SAID CARBON ELECTRODE SOLID CARBON PULVERIZED TO A DEGREE SUCH THAT 90% THEREOF WILL PASS AN 8 MESH SCREEN, THE AMOUNT OF SAID SOLID PULVERIZED CARBON BEING BETWEEN ABOUT 1 AND ABOUT 20% OF THE TOTAL CARBON UTILIZED IN THE PRODUCTION OF SAID ELEMENTAL PHOSPHORUS.
References Cited (Backward Citations)
US1443439A
Cited
US1946252A
Cited
US2143001A
Cited
US2104530A
Cited
US2168312A
Cited
US2226525A
Cited
US2303973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |