Patent US2666776A successfully refreshed from Google Patents.
US2666776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of organic silicon compounds
Assignee: Wacker Chemie AG
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Filing: 1950-04-19
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Granted: 1954-01-19
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Expires: 1970-04-19
Abstract
No abstract record available.
Inventors
- 👤 Nitzsche Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:35
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE PROCESS FOR PRODUCING ORGANOHALOGENOSILANES WHICH COMPRISES REACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ARYL AND ALKYL HALIDES IN VAPOR PHASE WITH AN ALLOWY CONSISTING ESSENTIALLY OF SILICON, COPPER AND A METAL, SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, AND NICKEL, IN THE PRESENCE OF A COPPER SALT.
Claim 2
Dependent Claim
51 words
THE PROCESS FOR PRODUCING ORGANOHALOGENOSILANES WHICH COMPRISES REACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ARYL AND ALKYL HALIDES IN VAPOR PHASE WITH AN ALLOWY CONSISTING ESSENTIALLY OF SILICON, COPPER AND A METAL, SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, AND NICKEL, IN THE PRESENCE OF A COPPER SALT.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |