US3291571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal growth
Assignee: Motors Liquidation Co
•
Filing: 1963-12-23
•
Granted: 1966-12-13
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Hubert G Dohmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/20; C30B15/22; C30B15/24; C30B15/14; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/1036; Y10T117/1068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN APPARATUS FOR GROWING A MONOCRYSTALLINE BODY OF CONTROLLED CROSS SECTION, SAID APPARATUS COMPRISING MEANS FOR CONTAINING A CRYSTAL GROWING MELT IN A CRYSTAL GROWING ENVIRONMENT, A MELT COVER MEMBER HAVING AN APERTURE THEREIN FOR CONTACTING THE SURFACE OF SAID MELT. SAID MEMBER BEING SUBSTANTIALLY INERT TO ITS ENVIRONMENT MEANS FOR FORCING A DOMICAL PROJECTION OF SAID MELT UP THROUGH SAID APERTURE ABOVE THE UPPER SURFACE OF SAID COVER, MEANS FOR PULLING A SINGLE CRYSTAL FROM SAID MELT DOMICAL PROJECTION BY PROGRESSIVE UNICRYSTALLINE SOLIDIFICATION OF SAID MELT ON A SEED CRYSTAL ABOVE SAID COVER MEMBER, AND MEANS ON SAID COVER FOR INHIBITING RADIATION OF HEAT FROM THE OUTER SURFACE OF SAID COVER MEMBER TO THE CRYSTAL GROWING ENVIRONMENT ABOVE THE DOMICAL PROJECTION.
Claim 2
Independent Claim
122 words
AN APPARATUS FOR GROWING A MONOCRYSTALLINE BODY OF CONTROLLED CROSS SECTION, SAID APPARATUS COMPRISING MEANS FOR CONTAINING A CRYSTAL GROWING MELT IN A CRYSTAL GROWING ENVIRONMENT, A MELT COVER MEMBER HAVING AN APERTURE THEREIN FOR CONTACTING THE SURFACE OF SAID MELT. SAID MEMBER BEING SUBSTANTIALLY INERT TO ITS ENVIRONMENT MEANS FOR FORCING A DOMICAL PROJECTION OF SAID MELT UP THROUGH SAID APERTURE ABOVE THE UPPER SURFACE OF SAID COVER, MEANS FOR PULLING A SINGLE CRYSTAL FROM SAID MELT DOMICAL PROJECTION BY PROGRESSIVE UNICRYSTALLINE SOLIDIFICATION OF SAID MELT ON A SEED CRYSTAL ABOVE SAID COVER MEMBER, AND MEANS ON SAID COVER FOR INHIBITING RADIATION OF HEAT FROM THE OUTER SURFACE OF SAID COVER MEMBER TO THE CRYSTAL GROWING ENVIRONMENT ABOVE THE DOMICAL PROJECTION.
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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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |