US3124489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously growing thin strip crystals
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:12
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/20; C30B15/22; C30B15/24; C30B29/00; C30B29/60; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/1036; Y10T117/1044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF PREPARING A RIBBON, HAVING PREDETERMINED TRANSVERSE CROSS-SECTIONAL AREA AND SHAPE, OF SINGLE CRYSTAL MATERIAL, COMPRISING MAINTAINING A MELT OF SAID MATERIAL, APPLYING PRESSURE TO SAID MELT SUCH THAT A PORTION THEREOF LFOWS INTO A RESTRICTIVE PASSAGE HAVING AN EXIT OPENING OF APPROXIMATELY SAID AREA AND SHAPE, CONTACTING A NUCLEATING MEANS TO SAID PORTION, WITHDRAWING SAID NUCLEATING MEANS AT A PREDETERMINED RATE WHILE DIRECTING A COOLING STREAM OF GAS WHICH IS INERT WITH RESPECT TO SAID MATERIAL, ADJACENT THE EXIT OF SAID PASSAGE SO AS TO MAINTAIN THE LIQUID LEVEL AT THE EXIT OF SAID PASSAGE AND TO CAUSE SAID MOLTEN MATERIAL TO SOLIDIFY WITHIN SAID PASSAGE AND FORM A CONTINUOUS, EMERGING, SINGLE CRYSTAL RIBBON HAVING SAID PREDETERMINED TRANSVERSE CROSS-SECTION AREA AND SHAPE AND ATTACHED TO SAID NUCLEATING MEANS, AND CONTINUING TO APLY PRESSURE TO SAID MELT TO SUPPLY MOLTEN MATERIAL TO SAID PASSAGE AT THE SAME RATE SAID RIBBON IS SOLIDIFYING.
Claim 2
Independent Claim
154 words
A METHOD OF PREPARING A RIBBON, HAVING PREDETERMINED TRANSVERSE CROSS-SECTIONAL AREA AND SHAPE, OF SINGLE CRYSTAL MATERIAL, COMPRISING MAINTAINING A MELT OF SAID MATERIAL, APPLYING PRESSURE TO SAID MELT SUCH THAT A PORTION THEREOF LFOWS INTO A RESTRICTIVE PASSAGE HAVING AN EXIT OPENING OF APPROXIMATELY SAID AREA AND SHAPE, CONTACTING A NUCLEATING MEANS TO SAID PORTION, WITHDRAWING SAID NUCLEATING MEANS AT A PREDETERMINED RATE WHILE DIRECTING A COOLING STREAM OF GAS WHICH IS INERT WITH RESPECT TO SAID MATERIAL, ADJACENT THE EXIT OF SAID PASSAGE SO AS TO MAINTAIN THE LIQUID LEVEL AT THE EXIT OF SAID PASSAGE AND TO CAUSE SAID MOLTEN MATERIAL TO SOLIDIFY WITHIN SAID PASSAGE AND FORM A CONTINUOUS, EMERGING, SINGLE CRYSTAL RIBBON HAVING SAID PREDETERMINED TRANSVERSE CROSS-SECTION AREA AND SHAPE AND ATTACHED TO SAID NUCLEATING MEANS, AND CONTINUING TO APLY PRESSURE TO SAID MELT TO SUPPLY MOLTEN MATERIAL TO SAID PASSAGE AT THE SAME RATE SAID RIBBON IS SOLIDIFYING.
References Cited (Backward Citations)
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Cited
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Cited
US2889240A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |