Patent US3306703A successfully refreshed from Google Patents.
US3306703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of semiconductor dendrites
Assignee: Siemens and Halske AG
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Filing: 1962-08-13
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Granted: 1967-02-28
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Dersin Hansjurgen
- 👤 Sirtl Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:12
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/005; C30B29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF PRODUCING A GALLIUM ARSENIDE DENDRITE WHICH COMPRISES PRODUCING AN EQUILIBRIUM REACTION GAS MIXTURE FROM GALLIUM ARSENIDE AND IODINE OVER A SOLID SUPPLY OF GALLIUM ARSENIDE AT A TEMPERATURE ABOVE 1000* C., WITHIN A REACTION VESSEL, BY PLACING THE REACTION VESSEL WITHIN AN ISOTHERMAL FURANCE AREA, THEREAFTER RAPIDLY AND INTENSELY COOLING ONE END OF THE REACTION VESSEL AT LEAST 100*C. BY DISPLACING THE REACTION VESSEL TO AN AREA WITH A STEEP TEMPERATURE GRADIENT AND MAINTAINING SAID ONE END AT THIS TEMPERATURE WHILE MAINTAINING THE SOLID SUPPLY WITHIN THE REACTION VESSEL AT THE EQUILIBRIUM TEMPERATURE.
Claim 2
Independent Claim
96 words
A METHOD OF PRODUCING A GALLIUM ARSENIDE DENDRITE WHICH COMPRISES PRODUCING AN EQUILIBRIUM REACTION GAS MIXTURE FROM GALLIUM ARSENIDE AND IODINE OVER A SOLID SUPPLY OF GALLIUM ARSENIDE AT A TEMPERATURE ABOVE 1000* C., WITHIN A REACTION VESSEL, BY PLACING THE REACTION VESSEL WITHIN AN ISOTHERMAL FURANCE AREA, THEREAFTER RAPIDLY AND INTENSELY COOLING ONE END OF THE REACTION VESSEL AT LEAST 100*C. BY DISPLACING THE REACTION VESSEL TO AN AREA WITH A STEEP TEMPERATURE GRADIENT AND MAINTAINING SAID ONE END AT THIS TEMPERATURE WHILE MAINTAINING THE SOLID SUPPLY WITHIN THE REACTION VESSEL AT THE EQUILIBRIUM TEMPERATURE.
References Cited (Backward Citations)
US2862787A
Cited
US3145125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |