US2942950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of silicon tetrachloride
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-12-06
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Granted: 1960-06-28
•
Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Pallister Thomas Knott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:04
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD FOR PRODUCING SILICON TETRACHLORIDE COMPRISING FLUDIZING IN AN UPWARDLY FLOWING GASEOUS STREAM CONSISTING ESSENTIALLY OF CHLORINE AND THE REACTION PRODUCTS OF SUCH CHLORINE WITH SILICON, A BED OF SOLID FINELY DIVIDED SILICON MIXED WITH A SOLID FINELY-DIVIDED INERT DILUENT WHILE MAINTAINING SAID BED AT AN ELEVATED TEMPERATURE SUFFICIENTLY HIGH TO CAUSEREACTION BETWEEN SAID SILICON AND SAID CHLORINE TO FORM SAID SILICON TERACHLORIDE.
Claim 2
Independent Claim
64 words
THE METHOD FOR PRODUCING SILICON TETRACHLORIDE COMPRISING FLUDIZING IN AN UPWARDLY FLOWING GASEOUS STREAM CONSISTING ESSENTIALLY OF CHLORINE AND THE REACTION PRODUCTS OF SUCH CHLORINE WITH SILICON, A BED OF SOLID FINELY DIVIDED SILICON MIXED WITH A SOLID FINELY-DIVIDED INERT DILUENT WHILE MAINTAINING SAID BED AT AN ELEVATED TEMPERATURE SUFFICIENTLY HIGH TO CAUSEREACTION BETWEEN SAID SILICON AND SAID CHLORINE TO FORM SAID SILICON TERACHLORIDE.
References Cited (Backward Citations)
US2425504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |