US3695941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of eutectic material
Assignee: Individual
•
Filing: 1970-05-04
•
Granted: 1972-10-03
•
Expires: 1990-05-04
Abstract
Abstract A METHOD OF PREPARING SOLID EUTECTIC MATERIAL BY CONTROLLED SOLIDIFICATION FROM THE MELT INCLUDES THE APPLICATION OF A STEADY DIRECTIONAL MAGNETIC FIELD TO THE LIQUIDSOLID INTERFACE IN ORDER TO REDUCE BANDING PERPENDICULAR TO THE DIRECTION OF GROWTH. THE METHOD IS APPLIED WHEN NO EXTERNAL SOURCE OF ELECTRIC CURRENT IS ELECTRICALLY CONNECTED TO THE MATERIAL, AND THE SOLIDIFICATION PROCESS MAY INCLUDE PULLING FROM THE MELT, ZONE MELTING OR NORMAL FREEZING.
Inventors
- 👤 Geoffrey William Green
- 👤 Donald Thomas James Hurle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:31
CPC Classifications
C; C30; C30B; C30B21/00; C30B21/06; C30B21/02; C30B21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |