Patent US2602728A successfully refreshed from Google Patents.
US2602728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of chloropolysilanes
Assignee: General Electric Co
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Filing: 1950-07-08
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Granted: 1952-07-08
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Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Warren L Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:13
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS FOR PREPARING HIGHER PROPORTION OF ORGANIC CHLOROPOLYSILANES CONTAINING AT LEAST THREE SILICON ATOMS, TOGETHER WITH DIMINISHING PROPORTIONS OF CHLOROPOLYSILANES CONTAINING MORE THAN THREE SILICON ATOMS, WHICH PROCESS COMPRISES PASSING CHLORINE INTERMIXED WITH SILICON TETRACHLORIDE, BOTH IN THE VAPOR PHASE, IN WHICH THE CHLORINE COMPRISES FROM 3 TO 8 MOL PERCENT AND THE SILICON TETRACHLORIDE COMPRISES FROM 92 TO 97 MOL PERCENT OF THE TOTAL AMOUNT OF THE MIXTURE OF THESE TWO GASES, THROUGH A FLUIDIZED BED OF A FINELY DIVIDED SILICON ALLOY MAINTAINED AT A TEMPERATURE FROM 190* TO 250* C.
Claim 2
Dependent Claim
93 words
THE PROCESS FOR PREPARING HIGHER PROPORTION OF ORGANIC CHLOROPOLYSILANES CONTAINING AT LEAST THREE SILICON ATOMS, TOGETHER WITH DIMINISHING PROPORTIONS OF CHLOROPOLYSILANES CONTAINING MORE THAN THREE SILICON ATOMS, WHICH PROCESS COMPRISES PASSING CHLORINE INTERMIXED WITH SILICON TETRACHLORIDE, BOTH IN THE VAPOR PHASE, IN WHICH THE CHLORINE COMPRISES FROM 3 TO 8 MOL PERCENT AND THE SILICON TETRACHLORIDE COMPRISES FROM 92 TO 97 MOL PERCENT OF THE TOTAL AMOUNT OF THE MIXTURE OF THESE TWO GASES, THROUGH A FLUIDIZED BED OF A FINELY DIVIDED SILICON ALLOY MAINTAINED AT A TEMPERATURE FROM 190* TO 250* C.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |