US3687633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for growing crystalline bodies from the melt
Assignee: Saint Gobain Ceramics and Plastics Inc
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Filing: 1970-08-28
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Granted: 1972-08-29
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Expires: 1990-08-28
Abstract
Abstract THE INVENTION IS AN IMPROVEMENT IN APPARATUS FOR GROWING CRYSTALLINE BODIES FROM THE MELT. THE APPARATUS COMPRISES A NOVEL CRUCIBLE ARRANGEMENT AND A NOVEL "DIE" ASSEMBLY WHICH DETERMINES THE CROSS-SECTIONAL SHAPE OF THE CRYSTALLINE BODY.
Inventors
- 👤 Harold E La Belle Jr
- 👤 Charles J Cronan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/34; C30B29/00; C30B29/60; C30B29/66; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/1036; Y10T117/104; Y10T117/1044
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |