Patent US2292362A successfully refreshed from Google Patents.
Patent US3291575A successfully refreshed from Google Patents.
US3291575A
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US
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Method for growth of pegmatitic quartz crystals in a controlled axial direction
Assignee: Sawyer Res Products Inc
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Filing: 1965-01-27
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Granted: 1966-12-13
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Expires: 1985-01-27
Abstract
No abstract record available.
Inventors
- 👤 Company The Cleveland Trust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:14
CPC Classifications
C; C30; C30B; C30B7/00; C30B7/10; C01; C01B; C01B33/00; C01B33/113; C01B33/12; Y; Y10; Y10S; Y10S117/00; Y10S117/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD OF UNIFORMLY GROWING A FAMILY OF QUARTZ CRYSTALS OF INCREASED USABLE BULK SIZE AND WITH A MINIMUM OF IMPURITIES IN AN AUTOCLAVE HAVING A SEED-GROWING REGION, COMPRISING THE STEPS OF POSITIONING IN SUCH REGION AT LEAST TWO VERTICAL ROWS OF SUPERIMPOSED SPACED-APART FLAT SHEETS OF QUARTZ SEED CRYSTALS, EACH OF SAID SEED CRYSTALS HAVING A MAJOR OF FACE INTERSECTING THE CRYSTALLOGRAPHIC Z AXIS AT AN ANGLE OF 90*$10* AND BEING DIMENSIONED IN THE DIRECTION OF THE X AND Z AXES TO PRODUCE A RATIO OF THE LENGTHS OF THE X AND Z AXES OF AT LEAST 5, EACH OF SAID SEED CRYSTALS FURTHER HAVING ITS MAJOR FACE SUBSTANTIALLY PARALLEL TO THE OTHER SEED CRYSTALS OF BOTH ROWS, EXPOSING THE SEED CRYSTALS TO A CHEMICAL AND PHYSICAL ENVIRONMENT TO CAUSE CRYSTAL GROWTH PREFERENTIALLY ON SUCH MAJOR FACES,
Claim 2
Independent Claim
138 words
A METHOD OF UNIFORMLY GROWING A FAMILY OF QUARTZ CRYSTALS OF INCREASED USABLE BULK SIZE AND WITH A MINIMUM OF IMPURITIES IN AN AUTOCLAVE HAVING A SEED-GROWING REGION, COMPRISING THE STEPS OF POSITIONING IN SUCH REGION AT LEAST TWO VERTICAL ROWS OF SUPERIMPOSED SPACED-APART FLAT SHEETS OF QUARTZ SEED CRYSTALS, EACH OF SAID SEED CRYSTALS HAVING A MAJOR OF FACE INTERSECTING THE CRYSTALLOGRAPHIC Z AXIS AT AN ANGLE OF 90*$10* AND BEING DIMENSIONED IN THE DIRECTION OF THE X AND Z AXES TO PRODUCE A RATIO OF THE LENGTHS OF THE X AND Z AXES OF AT LEAST 5, EACH OF SAID SEED CRYSTALS FURTHER HAVING ITS MAJOR FACE SUBSTANTIALLY PARALLEL TO THE OTHER SEED CRYSTALS OF BOTH ROWS, EXPOSING THE SEED CRYSTALS TO A CHEMICAL AND PHYSICAL ENVIRONMENT TO CAUSE CRYSTAL GROWTH PREFERENTIALLY ON SUCH MAJOR FACES,
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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 |