Patent US2857414A successfully refreshed from Google Patents.
US2857414A
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Preparation of partially substittuted silanes and silane
Assignee: Kali Chemie AG
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Filing: 1955-09-16
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Granted: 1958-10-21
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Hans Werner
- 👤 Jenkner Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C01; C01B; C01B33/00; C01B33/04; C01B33/043; C01B33/08; C01B33/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF SILICON COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF SILICON COMPOUNDS OF THE FORMULA
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |