US2840489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the controlled deposition of silicon dihalide vapors onto selected surfaces
Assignee: OI Glass Inc
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Filing: 1956-01-17
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Granted: 1958-06-24
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Expires: 1976-01-17
Abstract
No abstract record available.
Inventors
- 👤 Charles P Kempter
- 👤 Alvarez-Tostado Clandio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:15
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/02; Y; Y10; Y10S; Y10S148/00; Y10S148/065; Y10S148/073; Y10S148/107; Y10S148/12; Y10S148/122; Y10S148/152; Y10S264/00; Y10S264/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE PROCESS OF COATING A THIN WELL-CRYSTALLIZED CONTINUOUS LAYER OF SILICON ONTO A SURFACE CAPABLE OF WITHSTANDING WITHOUT PHYSICAL CHANGE THERETO A TEMPERATURE WHICH IS AT LEAST AS HIGH AS THE MINIMUM EQUILIBRIUM TEMPERATURE OF SILICON DIHALIDE VAPORS COMPRISING THE STEP OF PASSING HEATED SILICON DIHALIDE VAPORS OVER AND IN CONTACT WITH SAID SURFACE AT A PREDETERMINED FLOW RATE, THE TEMPERATURE OF SAID SURFACE BEING RELATIVELY COOLER THAN THE TEMPERATURE OF SAID VAPORS AND CAUSING EXOTHERMIC DECOMPOSITION OF SAID SILICON DIHALIDE VAPORS INTO FREE SILICON AND SILICON TETRAHALIDE VAPORS, SAID FREE SILICON BEING DEPOSITED ONTO SAID SURFACE.
Claim 2
Dependent Claim
97 words
THE PROCESS OF COATING A THIN WELL-CRYSTALLIZED CONTINUOUS LAYER OF SILICON ONTO A SURFACE CAPABLE OF WITHSTANDING WITHOUT PHYSICAL CHANGE THERETO A TEMPERATURE WHICH IS AT LEAST AS HIGH AS THE MINIMUM EQUILIBRIUM TEMPERATURE OF SILICON DIHALIDE VAPORS COMPRISING THE STEP OF PASSING HEATED SILICON DIHALIDE VAPORS OVER AND IN CONTACT WITH SAID SURFACE AT A PREDETERMINED FLOW RATE, THE TEMPERATURE OF SAID SURFACE BEING RELATIVELY COOLER THAN THE TEMPERATURE OF SAID VAPORS AND CAUSING EXOTHERMIC DECOMPOSITION OF SAID SILICON DIHALIDE VAPORS INTO FREE SILICON AND SILICON TETRAHALIDE VAPORS, SAID FREE SILICON BEING DEPOSITED ONTO SAID SURFACE.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |