US2917529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkyl chlorosilanes
Assignee: EIDP Inc
•
Filing: 1956-07-10
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Granted: 1959-12-15
•
Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 John J Drysdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS WHICH COMPRISES REACTING SILICON TETRACHLORIDE, AN ETHYLENICALLY-UNSATURATED HYDROCARBON POSSESSING 2-8 CARBON ATOMS AND AT MOST TWO CARBON-TOCARBON DOUBLE BONDS AND A COMMINUTED MEMBER OF THE GROUP CONSISTING OF SILICON AND ALLOYS THEREOF IN THE PRESENCE OF HYDROGEN UNDER A PRESSURE OF ABOUT 10-300 ATMOSPHERES AND A METAL CHLORIDE OF THE GROUP CONSISTING OF STANNOUS, CUPROUS AND CUPRIC CHLORIDES AT A TEMPERATURE OF ABOUT 325-400*C. AND THEREBY FORMING ALKYL CHLOROSILANES.
Claim 2
Dependent Claim
71 words
THE PROCESS WHICH COMPRISES REACTING SILICON TETRACHLORIDE, AN ETHYLENICALLY-UNSATURATED HYDROCARBON POSSESSING 2-8 CARBON ATOMS AND AT MOST TWO CARBON-TOCARBON DOUBLE BONDS AND A COMMINUTED MEMBER OF THE GROUP CONSISTING OF SILICON AND ALLOYS THEREOF IN THE PRESENCE OF HYDROGEN UNDER A PRESSURE OF ABOUT 10-300 ATMOSPHERES AND A METAL CHLORIDE OF THE GROUP CONSISTING OF STANNOUS, CUPROUS AND CUPRIC CHLORIDES AT A TEMPERATURE OF ABOUT 325-400*C. AND THEREBY FORMING ALKYL CHLOROSILANES.
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |