US2651566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for growing crystals
Assignee: International Standard Electric Corp
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Filing: 1950-02-11
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Granted: 1953-09-08
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Expires: 1970-02-11
Abstract
No abstract record available.
Inventors
- 👤 Warner Arthur James
- 👤 Foord Stanley George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
C; C30; C30B; C30B7/00; C30B29/00; C30B29/54; C30B29/56; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1008; Y10T117/1024; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0335; Y10T137/2496; Y10T137/2499; Y10T137/2506
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
METHOD OF GROWING CRYSTALS AT CONSTANT TEMPERATURE IN A SUPERSATURATED SOLUTION BY CIRCULATING A SOLUTION BETWEEN A GROWING CONTAINER IN WHICH CRYSTALS ARE GROWN AND A DISSOLVING CONTAINER MAINTAINED AT A HIGHER TEMPERATURE THAN THAT OF THE GROWING CONTAINER, WHICH METHOD IS CHARACTERISED BY THE MAINTENANCE OF SAID DISSOLVING CONTAINER AT A CONSTANT TEMPERATURE SUFFICIENTLY HIGH TO KEEP THE SOLUTION THEREIN APPRECIABLY BELOW SATURATION, MEASURING THE CONCENTRATION OF THE SOLUTION ENTERING THE GROWING CONTAINER, AND CONTROLLING THE ADDITION OF SOLUTE TO THE DISSOLVING CONTAINER IN ACCORDANCE WITH SUCH MEASUREMENT.
Claim 2
Dependent Claim
89 words
METHOD OF GROWING CRYSTALS AT CONSTANT TEMPERATURE IN A SUPERSATURATED SOLUTION BY CIRCULATING A SOLUTION BETWEEN A GROWING CONTAINER IN WHICH CRYSTALS ARE GROWN AND A DISSOLVING CONTAINER MAINTAINED AT A HIGHER TEMPERATURE THAN THAT OF THE GROWING CONTAINER, WHICH METHOD IS CHARACTERISED BY THE MAINTENANCE OF SAID DISSOLVING CONTAINER AT A CONSTANT TEMPERATURE SUFFICIENTLY HIGH TO KEEP THE SOLUTION THEREIN APPRECIABLY BELOW SATURATION, MEASURING THE CONCENTRATION OF THE SOLUTION ENTERING THE GROWING CONTAINER, AND CONTROLLING THE ADDITION OF SOLUTE TO THE DISSOLVING CONTAINER IN ACCORDANCE WITH SUCH MEASUREMENT.
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |