Seed holder for use in hydrothermal synthesis of quartz
Abstract
Abstract QUARTZ IS GROWN BY HYDROTHERMAL SYNTHESIS IN A VERTIICAL AUTOCLAVE ON A NUMBER OF SEPARATE SEED PLATES WHICH MAY BE OF UNEQUAL LENGTH BUT WHICH ARE HELD IN SEED RACKS HAVING EQUALLY SPACED TIERS. THE ENDS OF EACH SEED PLATE ARE PROVIDED WITH BENT WIRE HOLDERS ENGAGING SLOTS IN THE SIDES OF THE SEED PLATES AND EXTENDING OUTWARDLY FROM THE ENDS OF THE SEED A VARIABLE DISTANCE SO THAT EACH SEED AND HOLDER ASSEMBLY OF A SINGLE TIER IS THE SAME LENGTH TO BE ACCOMMODATED IN THE EQUALLY SPACED TIER. THE CENTRAL PORTION OF EACH WIRE HOLDER IS BENT TO FORM AN OUTWARDLY EXTENDING PROJECTION TO ENGAGE RECESSES IN THE TIER PLATES OF THE SEED RACK. AFTER ROCKS ARE GROWN ON THE SEEDS PLATES THE SEEDS MAY BE RECOVERED BY SLICING THE GROWN ROCK. THUS, THE SEED AND HOLDER ASSEMBLY CAN BE USED OVER AND OVER.
Inventors
- 👤 David W Gehres
- 👤 Aiken Industries Inc
- 👤 Paul L Negley
Bibliographic Details
Claims Analysis
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |