US3759671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontal growth of crystal ribbons
Assignee: Motors Liquidation Co
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Filing: 1971-10-15
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Granted: 1973-09-18
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Expires: 1991-10-15
Abstract
Abstract A METHOD AND APPARATUS IS DESCRIBED FOR HORIZONATLLY PULLING CRYSTAL RIBBONS FROM A MELT PARALLEL TO THE MELT SURFACE. THE HEAT OF CRYSTALLIZATION IS SELECTIVELY REMOVED FROM ONE END OF A SEED CRYSTAL BY A HEAT ABSROBING MEANS PERPENDICULAR TO THE MELT SURFACE. MEANS ARE PROVIDED TO APPROPRIATELY SUPPRESS NET LOSS OF THE HEAT OF FUSION FROM THE BALANCE OF THE SEED IN CONTACT WITH THE MELT TO CONTROL THE THICKNESS OF THE RESULTANT RIBBON.
Inventors
- 👤 C Bleil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:05
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/06
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |