Patent US2628246A successfully refreshed from Google Patents.
US2628246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of unsaturated silanes
Assignee: Ellis Foster Co
•
Filing: 1946-03-11
•
Granted: 1953-02-10
•
Expires: 1966-03-11
Abstract
No abstract record available.
Inventors
- 👤 Charles A Mackenzie
- 👤 John B Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:45
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0825; C07F7/0827
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS OF PREPARING SILICANE DERIVATIVES WHICH COMPRISES HEATING AN ORGANIC HALIDE HAVING THE FORMULA X-CH2-CR=CHR'' IN WHICH ONE OF THE GROUPS R AND R'' IS HYDROGEN AND THE OTHER IS A LOWER ALKYL RADICAL, AND X IS A HALOGEN SELECTED FROM CHLORINE AND BROMINE, WITH A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND LITHIUM, AND A SILICON HALIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULAS SIX4 AND R"2SIX2 WHERE X IS HALOGEN AND R" IS SELECTED FROM LOWER ALKYL AND MONOCYCLIC ARYL RADICALS.
Claim 2
Dependent Claim
89 words
A PROCESS OF PREPARING SILICANE DERIVATIVES WHICH COMPRISES HEATING AN ORGANIC HALIDE HAVING THE FORMULA X-CH2-CR=CHR'' IN WHICH ONE OF THE GROUPS R AND R'' IS HYDROGEN AND THE OTHER IS A LOWER ALKYL RADICAL, AND X IS A HALOGEN SELECTED FROM CHLORINE AND BROMINE, WITH A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM AND LITHIUM, AND A SILICON HALIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULAS SIX4 AND R"2SIX2 WHERE X IS HALOGEN AND R" IS SELECTED FROM LOWER ALKYL AND MONOCYCLIC ARYL RADICALS.
References Cited (Backward Citations)
US2505431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |