US3241925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for growing solid homogeneous compositions
Assignee: Union Carbide Corp
•
Filing: 1960-08-19
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Granted: 1966-03-22
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jean Leon Van Cakenberghe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:25
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/10; C30B15/12; C30B15/20; C30B15/22; C30B15/28; C30B15/30; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1008; Y10T117/1024; Y10T117/1032; Y10T117/1052; Y10T117/1056; Y10T117/1072; Y10T137/00; Y10T137/7287; Y10T137/7306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
APPARATUS FOR GROWING A HOMOGENEOUS SOLID COMPOSITION COMPRISING : AN OUTER CRUCIBLE AND AN INNER CRUCIBLE DISPOSED CONCENTRICALLY WITHIN SAID OUTER CRUCIBLE, THE OUTER SIDE WALLS OF SAID INNER CRUCIBLE BEING IN SLIDING CONTACT WITH THE INNER SIDE WALLS OF SAID OUTER CRUCIBLE, AND THE OUTER BOTTOM WALL OF SAID INNER CRUCIBLE AND THE INNER BOTTOM WALL OF SAID OUTER CRUCIBLE BEING SPACED APART TO DEFINE A RECESS THEREBETWEEN; AT LEAST ONE CAPILLARY TUBE EXTENDING THROUGH THE BOTTOM WALL OF SAID INNER CRUCIBLE, SAID TUBE BEING SUFFICIENTLY SMALL TO PREVENT DRAWBACK OF MOLTEN MATERIAL FROM SAID INNER CRUCIBLE INTO SAID RECESS; A BODY OF MOLTEN MATERIAL WITHIN SAID INNER CRUCIBLE; MEANS FOR WITHDRAWING A SOLID COMPOSITION FROM THE MOLTEN MATERIAL IN SAID INNER CRUCIBLE; A BODY OF MOLTEN MATERIAL HAVING THE SAME COMPOSITION AS SAID WITHDRAWN SOLID WITHIN SAID RECESS BETWEEN SAID
Claim 2
Dependent Claim
142 words
APPARATUS FOR GROWING A HOMOGENEOUS SOLID COMPOSITION COMPRISING : AN OUTER CRUCIBLE AND AN INNER CRUCIBLE DISPOSED CONCENTRICALLY WITHIN SAID OUTER CRUCIBLE, THE OUTER SIDE WALLS OF SAID INNER CRUCIBLE BEING IN SLIDING CONTACT WITH THE INNER SIDE WALLS OF SAID OUTER CRUCIBLE, AND THE OUTER BOTTOM WALL OF SAID INNER CRUCIBLE AND THE INNER BOTTOM WALL OF SAID OUTER CRUCIBLE BEING SPACED APART TO DEFINE A RECESS THEREBETWEEN; AT LEAST ONE CAPILLARY TUBE EXTENDING THROUGH THE BOTTOM WALL OF SAID INNER CRUCIBLE, SAID TUBE BEING SUFFICIENTLY SMALL TO PREVENT DRAWBACK OF MOLTEN MATERIAL FROM SAID INNER CRUCIBLE INTO SAID RECESS; A BODY OF MOLTEN MATERIAL WITHIN SAID INNER CRUCIBLE; MEANS FOR WITHDRAWING A SOLID COMPOSITION FROM THE MOLTEN MATERIAL IN SAID INNER CRUCIBLE; A BODY OF MOLTEN MATERIAL HAVING THE SAME COMPOSITION AS SAID WITHDRAWN SOLID WITHIN SAID RECESS BETWEEN SAID
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |