US2553845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkoxysilanes
Assignee: Dow Silicones Corp
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Filing: 1949-06-20
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Granted: 1951-05-22
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Expires: 1969-06-20
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:54
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS COMPRISING REACTING A SATURATED ALIPHATIC ALCOHOL CONTAINING LESS THAN FOUR CARBON ATOMS PER MOLECULE, SAID ALCOHOL BEING IN VAPOR PHASE, WITH A LIQUID CHLOROSILANE OF THE FORMULA RN SICL4-N WHERE N HAS A VALUE FROM 1 TO 3 AND R IS SELECTED FROM THE GROUP CONSISTING OF PHENYL, CHLOROPHENYL, TOLYL AND METHYL RADICALS, THERE BEING AT LEAST ONE OF THE ABOVE DEFINED MONOCYCLIC ARYL RADICALS PER MOLECULE OF CHLOROSILANE WHEREBY AN ALKOXY SILANE IS OBTAINED.
Claim 2
Dependent Claim
77 words
A PROCESS COMPRISING REACTING A SATURATED ALIPHATIC ALCOHOL CONTAINING LESS THAN FOUR CARBON ATOMS PER MOLECULE, SAID ALCOHOL BEING IN VAPOR PHASE, WITH A LIQUID CHLOROSILANE OF THE FORMULA RN SICL4-N WHERE N HAS A VALUE FROM 1 TO 3 AND R IS SELECTED FROM THE GROUP CONSISTING OF PHENYL, CHLOROPHENYL, TOLYL AND METHYL RADICALS, THERE BEING AT LEAST ONE OF THE ABOVE DEFINED MONOCYCLIC ARYL RADICALS PER MOLECULE OF CHLOROSILANE WHEREBY AN ALKOXY SILANE IS OBTAINED.
References Cited (Backward Citations)
US2484394A
Cited
US2483963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |