US3341302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux-melt method for growing single crystals having the structure of beryl
Assignee: Union Carbide Corp
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Filing: 1964-10-06
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Granted: 1967-09-12
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Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Edith M Flanigen
- 👤 Allan M Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:43
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B9/00; C30B9/04; C30B9/08; C30B9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A MELT-FLUX PROCESS FOR GROWING SINGLE CRYSTALS HAVING THE STRUCTURE OF BERYL WHICH COMPRISES DEPOSITING A COMPOSITON HAVING THE STRUCTURE OF BERYL ON A SEED CRYSTAL FROM A MOLTEN FLUX SOLUTION XONTAINING NUTRIENT SOURCES OF THE OXIDES OF BERYLLIUM, ALUMINUM AND SILICON AND COMPRISING SAID OXIDES AS SOLUTES IN A STATE OF EQUILIBRIUM WITH THE CRYSTAL BEING GROWN, THE FLUX BEING SELECTED FROM THE CLASS CONSISTING A VANADIUM PENTOXIDE, ACIDIC MOLYBDATE SALTS OF ALKALI METALS, AND ACIDIC TUNGSTATE SALTS OF ALKALI METALS, POSITIONING THE NUTRIENT SOURCE AND SEED CRYSTAL IN THE MOLTEN FLUX SOLUTION, THE NUTRIENT SOURCES BEING LOCATED IN THE FLUX SOLUTION IN A ZONE WHICH IS ABOVE THE ZONE IN WHICH THE SPEED CRYSTAL IS LOCATED THE NUTRIENT SOURCE BEING MAINTAINED AT A HIGHER TENPERATURE THAN THAT OF THE ZONE IN WHICH SAID SEED CRYSTAL IS LOCATED, THE SAID ARRANGEMENT SUBSTANTIALLY PRECLUDING IMPURITIES FROM MIGRATING FROM SAID NUTRIENT SOURCE TO SAID SEED CRYSTAL.
Claim 2
Dependent Claim
155 words
A MELT-FLUX PROCESS FOR GROWING SINGLE CRYSTALS HAVING THE STRUCTURE OF BERYL WHICH COMPRISES DEPOSITING A COMPOSITON HAVING THE STRUCTURE OF BERYL ON A SEED CRYSTAL FROM A MOLTEN FLUX SOLUTION XONTAINING NUTRIENT SOURCES OF THE OXIDES OF BERYLLIUM, ALUMINUM AND SILICON AND COMPRISING SAID OXIDES AS SOLUTES IN A STATE OF EQUILIBRIUM WITH THE CRYSTAL BEING GROWN, THE FLUX BEING SELECTED FROM THE CLASS CONSISTING A VANADIUM PENTOXIDE, ACIDIC MOLYBDATE SALTS OF ALKALI METALS, AND ACIDIC TUNGSTATE SALTS OF ALKALI METALS, POSITIONING THE NUTRIENT SOURCE AND SEED CRYSTAL IN THE MOLTEN FLUX SOLUTION, THE NUTRIENT SOURCES BEING LOCATED IN THE FLUX SOLUTION IN A ZONE WHICH IS ABOVE THE ZONE IN WHICH THE SPEED CRYSTAL IS LOCATED THE NUTRIENT SOURCE BEING MAINTAINED AT A HIGHER TENPERATURE THAN THAT OF THE ZONE IN WHICH SAID SEED CRYSTAL IS LOCATED, THE SAID ARRANGEMENT SUBSTANTIALLY PRECLUDING IMPURITIES FROM MIGRATING FROM SAID NUTRIENT SOURCE TO SAID SEED CRYSTAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |