US2805147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for introducing fine-grained additions below the surface of metal melts
Assignee: Tiroler Rohren und Metallwerke AG
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Filing: 1953-09-28
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Granted: 1957-09-03
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Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Schreiber Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:54
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR INTRODUCING READLLY REACTING, FINEGRAINED SOLID ADDITIVES BELOW THE SURFACE OF A METAL MELT, COMPRISING SUSPENDING THE SOLIDS IN A CARRIER GAS, COOLING THE GASEOUS SUSPENSION SUBSTANTIALLY TO THE POINT OF CONTACT WITH THE MELT AND PASSING THE COOLED SUSPENSION DIRECTLY INTO THE MELT DEEPLY BELOW THE SURFACE THEREOF AT A TIMED RATE SUFFICIENTLY SLOW TO LIMIT THE VIOLENCE OF THE REACTION OF THE SOLIDS WITH THE MELT.
Claim 2
Dependent Claim
70 words
A PROCESS FOR INTRODUCING READLLY REACTING, FINEGRAINED SOLID ADDITIVES BELOW THE SURFACE OF A METAL MELT, COMPRISING SUSPENDING THE SOLIDS IN A CARRIER GAS, COOLING THE GASEOUS SUSPENSION SUBSTANTIALLY TO THE POINT OF CONTACT WITH THE MELT AND PASSING THE COOLED SUSPENSION DIRECTLY INTO THE MELT DEEPLY BELOW THE SURFACE THEREOF AT A TIMED RATE SUFFICIENTLY SLOW TO LIMIT THE VIOLENCE OF THE REACTION OF THE SOLIDS WITH THE MELT.
References Cited (Backward Citations)
BE514115A
Cited
US1205611A
Cited
US1587600A
Cited
US2333654A
Cited
US2485760A
Cited
FR1017968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |