US3573967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor-liquid-solid crystal growth technique
Assignee: AT&T Inc
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Filing: 1967-03-01
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Granted: 1971-04-06
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Expires: 1987-03-01
Abstract
Abstract D R A W I N G THE CONTROLLED GROWTH OF A CRYSTALLINE MATERIAL UPON A SEED CRYSTAL IS EFFECTED BY MEANS OF THE VAPOR-LIQUIDSOLID CRYSTAL GROWTH MECHANISM, THE SEED CRYSTAL BEING PHYSICALLY ISOLATED FROM THE VAPOR SOURCE BY IMMERSION THEREOF IN A LIQUID SOLUTION SUPERSATURATED WITH RESPECT TO THE CRYSTALLINE MATERIAL.
Inventors
- 👤 William G Pfann
- 👤 Richard S Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/12; Y; Y10; Y10S; Y10S148/00; Y10S148/107; Y10S148/17
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |