US3136626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of refining cast-iron
Assignee: Sollac SA
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Filing: 1961-08-02
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Granted: 1964-06-09
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Decamps Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:00
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A METHOD OF REFINING CAST-IRON, COMPRISING MELTING THE CAST-IRON, INTRODUCING THE MOLTEN CAST-IRON AND SLAG INTO A FURNACE TO PRODUCE A MOLTEN BATH IN THE LATTER, BLOWING OXYGEN INTO TH EMOLTEN BATH, ADDING LIME TO THE MOLTEN BATH WHEN THE MOLTEN METAL HAS ALMOST ATTAINED ITS DESIRED CARBON CONTENT WHILE RETAINING THE SLAG WHICH THE SLAG AND FURTHER TO EFFECT DEPHOSPHORISATION OF THE METAL, AGITATING THE MOLTEN BATH WHILE DISCONTINUING THE BLOWING OF OXYGEN THEREIN, AND THEREAFTER DISCHARGING THE REFINED STEEL FROM THE FURNACE WHILE RETAINING THE DRIED
Claim 2
Independent Claim
88 words
A METHOD OF REFINING CAST-IRON, COMPRISING MELTING THE CAST-IRON, INTRODUCING THE MOLTEN CAST-IRON AND SLAG INTO A FURNACE TO PRODUCE A MOLTEN BATH IN THE LATTER, BLOWING OXYGEN INTO TH EMOLTEN BATH, ADDING LIME TO THE MOLTEN BATH WHEN THE MOLTEN METAL HAS ALMOST ATTAINED ITS DESIRED CARBON CONTENT WHILE RETAINING THE SLAG WHICH THE SLAG AND FURTHER TO EFFECT DEPHOSPHORISATION OF THE METAL, AGITATING THE MOLTEN BATH WHILE DISCONTINUING THE BLOWING OF OXYGEN THEREIN, AND THEREAFTER DISCHARGING THE REFINED STEEL FROM THE FURNACE WHILE RETAINING THE DRIED
References Cited (Backward Citations)
US2804385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |