US2848321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drossing fluxes
Assignee: Foundry Services Ltd
•
Filing: 1956-12-31
•
Granted: 1958-08-19
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Bunbury Frederick Molesworth
- 👤 Pursall Francis Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:00
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A DROSSING FLUX FOR USE WITH LIGHT METALS SELECTED FROM THE CLASS CONSISTING OF ALUMINIUM, MAGNESIUM AND ALLOYS OF EITHER, WHICH COMPRISES ALUMINIUM OF PARTICLE SIZE MINUS 300 MESH AND A FLUORIDE, THE INGREDIENTS OF THE COMPOSITION NOT BEING OF THEMSELVES EXOTHERMICALLY REACTIVE WITH ONE ANOTHER.
References Cited (Backward Citations)
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Cited
US2162938A
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US2591105A
Cited
US2490327A
Cited
US2578977A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |