US2519926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resolution of chlorosilane mixtures
Assignee: General Electric Co
•
Filing: 1947-03-25
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Granted: 1950-08-22
•
Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 Winton I Patnode
- 👤 John R Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:31
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS WHICH COMPRISES (1) HYDROLYZING WITH WATER A MIXTURE OF TETRACHLORASILANE AND TRIMETHYL CHLOROSILANE, (2) CONTACTING THE HYDROLYSIS REACTION PRODUCT IN AN AQUEOUS MEDIUM WITH AN ALKALI-METAL HYDROXIDE THEREBY TO OBTAIN A LAYER COMPRISING HEXAMETHYL DISILOXANE, THE ALKALI-METAL HYDROXIDE BEING PRESENT IN A RATIO OF FROM 2 TO 8.6 MOLS OF THE LATTER PER MOL TETRACHLOROSILANE, AND (3) ISOLATING THE HEXAMETHYLDISILOXANE PRESENT IN THE AFORESAID LAYER.
Claim 2
Dependent Claim
67 words
THE PROCESS WHICH COMPRISES (1) HYDROLYZING WITH WATER A MIXTURE OF TETRACHLORASILANE AND TRIMETHYL CHLOROSILANE, (2) CONTACTING THE HYDROLYSIS REACTION PRODUCT IN AN AQUEOUS MEDIUM WITH AN ALKALI-METAL HYDROXIDE THEREBY TO OBTAIN A LAYER COMPRISING HEXAMETHYL DISILOXANE, THE ALKALI-METAL HYDROXIDE BEING PRESENT IN A RATIO OF FROM 2 TO 8.6 MOLS OF THE LATTER PER MOL TETRACHLOROSILANE, AND (3) ISOLATING THE HEXAMETHYLDISILOXANE PRESENT IN THE AFORESAID LAYER.
References Cited (Backward Citations)
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Cited
US2211704A
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |