US2626268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of aliphatic silanes
Assignee: Dow Chemical Co
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Filing: 1948-12-11
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Granted: 1953-01-20
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Expires: 1968-12-11
Abstract
No abstract record available.
Inventors
- 👤 Barry Arthur John
- 👤 Pree Lee De
- 👤 Hook Donald Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE PROCESS WHICH COMPRISES REACTING AN OLEFIN, IN THE ABSENCE OF CATALYSTS FOR EFFECTING POLYMERIZATION OF OLEFINS AND AT A TEMPERATURE OF LESS THAN 410* C. WITH A HYDROCARBON-HALOSILANE HAVING BOTH HYDROGEN AND HALOGEN ATOMS AND AT LEAST ONE MONOVALENT HYDROCARBON RADICAL, FREE OF ALIPHATIC UNSATURATION ATTACHED TO THE SILICON ATOM TO FORM A POLYORGANOHALOSILANE AS THE PRINCIPAL REACTION PRODUCT.
Claim 2
Dependent Claim
60 words
THE PROCESS WHICH COMPRISES REACTING AN OLEFIN, IN THE ABSENCE OF CATALYSTS FOR EFFECTING POLYMERIZATION OF OLEFINS AND AT A TEMPERATURE OF LESS THAN 410* C. WITH A HYDROCARBON-HALOSILANE HAVING BOTH HYDROGEN AND HALOGEN ATOMS AND AT LEAST ONE MONOVALENT HYDROCARBON RADICAL, FREE OF ALIPHATIC UNSATURATION ATTACHED TO THE SILICON ATOM TO FORM A POLYORGANOHALOSILANE AS THE PRINCIPAL REACTION PRODUCT.
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) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |