US3268326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of metal melts
Assignee: Dortmund Hoerder Huettenunion AG
•
Filing: 1963-11-15
•
Granted: 1966-08-23
•
Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Harders Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:43
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/02; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
METHOD OF TREATING A METAL MELT WITH TREATING AGENTS FOR PURIFYING AND ALLOYING WITH THE METAL OF THE MELT, WHICH COMPRISES CONVEYING A PORTABLE RECEPTACLE TO A POSITION ABOVE A MELT, LOWERING AN OPEN END OF THE RECEPTABLE INTO THE MELT, SIMULTANEOUSLY DISCHARGING FROM THE RECEPTACLE PART OF THE AIR THEREIN AND REPLACING IT WITH A PORTION OF THE MELT INTRODUCED THROUGH THE OPEN END OF THE RECEPTACLE, FEEDING A QUANTITY OF TREATING AGENT TO THE PORTION OF THE MELT IN THE RECEPTACLE SO THAT THE TREATING AGENT FORMS AN ALLOY WITH THE METAL MELT PORTION, AND PRESSURIZING THE RECEPTACLE TO DISCHARGE THE ALLOY FORMED THEREIN INTO THE SURROUNDING MELT.
Claim 2
Dependent Claim
110 words
METHOD OF TREATING A METAL MELT WITH TREATING AGENTS FOR PURIFYING AND ALLOYING WITH THE METAL OF THE MELT, WHICH COMPRISES CONVEYING A PORTABLE RECEPTACLE TO A POSITION ABOVE A MELT, LOWERING AN OPEN END OF THE RECEPTABLE INTO THE MELT, SIMULTANEOUSLY DISCHARGING FROM THE RECEPTACLE PART OF THE AIR THEREIN AND REPLACING IT WITH A PORTION OF THE MELT INTRODUCED THROUGH THE OPEN END OF THE RECEPTACLE, FEEDING A QUANTITY OF TREATING AGENT TO THE PORTION OF THE MELT IN THE RECEPTACLE SO THAT THE TREATING AGENT FORMS AN ALLOY WITH THE METAL MELT PORTION, AND PRESSURIZING THE RECEPTACLE TO DISCHARGE THE ALLOY FORMED THEREIN INTO THE SURROUNDING MELT.
References Cited (Backward Citations)
US1277523A
Cited
US2895820A
Cited
US2959478A
Cited
US3019275A
Cited
US3027150A
Cited
US2967768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |