US3224840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for producing crystalline materials
Assignee: Verizon Laboratories Inc
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Filing: 1962-11-16
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Granted: 1965-12-21
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Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 Robert A Lefever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR FLAME FUSION CRYSTAL GROWTH WHEREIN A CRYSTAL IS GROWN ON A SURFACE BYSUBJECTING THE CONSTITUENTS OF THE CRYSTAL DEPOSITED THEREON TO A HIGH TEMPERATURE FLAME, SAID APPARATUS COMPRISING (A) A FIRST VERTICALLY EXTENDING CYLINDRICAL TUBE ADAPTED TO PERMIT THE DOWNWARD PASSAGE OF OXYGEN GAS THERETHROUGH; (B) A PLURALITY OF CYLINDRICAL TUBES, SAID TUBES BEING DISTRIBUTED AROUN SAID FIRST TUBE AT EQUIDISTANTLY SPACED POSITIONS RELATIVE THERETO AND ADAPTED TO PERMIT THE PASSAGE OF A FIRST GAS THERETHROUGH, SAID PLURALITY OF TUBES BEING INCLINED FROM THE VERTICAL WHEREBY THE SEPARATION OF SAID PLURALITY OF TUBES WITH RESPECT TO EACH OTHER AND TO SAID VERTICALLY EXTENDING TUBE IS LEAST AT THE LOWER END OF SAID TUBE; (C) A CYLINDRICAL HOLLOW HOUSING ADAPTED TO RECEIVE A SECOND GAS AND ENCLOSING A SECTION OF SAID FIRST TUBE
Claim 2
Dependent Claim
134 words
APPARATUS FOR FLAME FUSION CRYSTAL GROWTH WHEREIN A CRYSTAL IS GROWN ON A SURFACE BYSUBJECTING THE CONSTITUENTS OF THE CRYSTAL DEPOSITED THEREON TO A HIGH TEMPERATURE FLAME, SAID APPARATUS COMPRISING (A) A FIRST VERTICALLY EXTENDING CYLINDRICAL TUBE ADAPTED TO PERMIT THE DOWNWARD PASSAGE OF OXYGEN GAS THERETHROUGH; (B) A PLURALITY OF CYLINDRICAL TUBES, SAID TUBES BEING DISTRIBUTED AROUN SAID FIRST TUBE AT EQUIDISTANTLY SPACED POSITIONS RELATIVE THERETO AND ADAPTED TO PERMIT THE PASSAGE OF A FIRST GAS THERETHROUGH, SAID PLURALITY OF TUBES BEING INCLINED FROM THE VERTICAL WHEREBY THE SEPARATION OF SAID PLURALITY OF TUBES WITH RESPECT TO EACH OTHER AND TO SAID VERTICALLY EXTENDING TUBE IS LEAST AT THE LOWER END OF SAID TUBE; (C) A CYLINDRICAL HOLLOW HOUSING ADAPTED TO RECEIVE A SECOND GAS AND ENCLOSING A SECTION OF SAID FIRST TUBE
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |