US2866703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treated molten metal
Assignee: Diamond Shamrock Corp
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Filing: 1956-05-28
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Granted: 1958-12-30
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Norman P Goss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:03
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/56; C21C5/567; Y; Y10; Y10S; Y10S75/00; Y10S75/957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF TREATING MOLTEN METAL CONTAINING IMPURITIES TO REMOVE IMPURITIES THEREFROM WHICH METHOD INCLUDES THE STEPS OF SUBJECTING A STREAM OF MOLTEN METAL TO TURBULENT FLOW AS A CONTINUOUS BODY CONFINED IN A GENERALLY HELICAL PATH, SAID PATH CONSTITUTING A METAL-STORING, METAL-ADVANCING ZONE, FORMING SAID BODY OF MOLTEN METAL INTO A GENERALLY HOLLOW CYLINDIRICAL SHAPE IN SAID ZONE, CONTACTING THE SURFACE OF SAID BODY OF MOLTEN METAL WITH A TREATING AGENT COMPRISING AN ALKALINE ALKALI METAL COMPOUND, AND AN ATMOSPHERE CONTAINING A GASEOUS CONSTITUENT REACTIVE WITH AT LEAST ONE OF THE IMPURITIES OF SAID MOLTEN METAL, FORMING DISCRETE PARTICLES OF SAID BODY OF METAL AND ALKALINE TREATING AGENT BY ALLOWING SAID STREAM TO LEAVE SAID PATH UNCONFINED THEREBY DISRUPTING SAID BODY, PASSING SAID DISCRETE PARTICLES THROUGH SAID ATMOS-
Claim 2
Independent Claim
129 words
THE METHOD OF TREATING MOLTEN METAL CONTAINING IMPURITIES TO REMOVE IMPURITIES THEREFROM WHICH METHOD INCLUDES THE STEPS OF SUBJECTING A STREAM OF MOLTEN METAL TO TURBULENT FLOW AS A CONTINUOUS BODY CONFINED IN A GENERALLY HELICAL PATH, SAID PATH CONSTITUTING A METAL-STORING, METAL-ADVANCING ZONE, FORMING SAID BODY OF MOLTEN METAL INTO A GENERALLY HOLLOW CYLINDIRICAL SHAPE IN SAID ZONE, CONTACTING THE SURFACE OF SAID BODY OF MOLTEN METAL WITH A TREATING AGENT COMPRISING AN ALKALINE ALKALI METAL COMPOUND, AND AN ATMOSPHERE CONTAINING A GASEOUS CONSTITUENT REACTIVE WITH AT LEAST ONE OF THE IMPURITIES OF SAID MOLTEN METAL, FORMING DISCRETE PARTICLES OF SAID BODY OF METAL AND ALKALINE TREATING AGENT BY ALLOWING SAID STREAM TO LEAVE SAID PATH UNCONFINED THEREBY DISRUPTING SAID BODY, PASSING SAID DISCRETE PARTICLES THROUGH SAID ATMOS-
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |