Patent US2914548A successfully refreshed from Google Patents.
US2914548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing aryloxyphenyl silanes
Assignee: Ethyl Corp
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Filing: 1956-12-14
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Granted: 1959-11-24
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Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Gene E Schroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:26
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
107 words
A PROCESS FOR THE PREPARATION OF TETRAORGANO MONOSILANES WHICH COMPRISES CONDENSING A COMPOUND RX WHEREIN R IS AN ARYLOXY PHENYL GROUP AND X IS A HALOGEN, WITH A COMPOUND R''XSIX''(4-N) WHEREIN R'' IS AN ALIPHATIC GROUP FREE FROM GROUPS REACTIVE WITH SODIUM CONTAINING BETWEEN ABOUT 5 TO 20 CARBON ATOMS, X'' IS A HALOGEN, AND N IS AN INTEGER FROM 1 TO 3 INCLUSIVE, BY MEANS OF FINELY DISPERSED SODIUM HAVING A PARTICLE SIZE NOT GREATER THAN 25 MICRONS, SAID SODIUM FINELY DISPERSED IN A HYDROCARBON MEDIUM HAVING A BOILING POINT BETWEEN ABOUT 0 TO 200*C., SAID CONDENSATION BEING CONDUCTED AT A TEMPERATURE BETWEEN 30 TO 40*C.
Claim 2
Dependent Claim
107 words
A PROCESS FOR THE PREPARATION OF TETRAORGANO MONOSILANES WHICH COMPRISES CONDENSING A COMPOUND RX WHEREIN R IS AN ARYLOXY PHENYL GROUP AND X IS A HALOGEN, WITH A COMPOUND R''XSIX''(4-N) WHEREIN R'' IS AN ALIPHATIC GROUP FREE FROM GROUPS REACTIVE WITH SODIUM CONTAINING BETWEEN ABOUT 5 TO 20 CARBON ATOMS, X'' IS A HALOGEN, AND N IS AN INTEGER FROM 1 TO 3 INCLUSIVE, BY MEANS OF FINELY DISPERSED SODIUM HAVING A PARTICLE SIZE NOT GREATER THAN 25 MICRONS, SAID SODIUM FINELY DISPERSED IN A HYDROCARBON MEDIUM HAVING A BOILING POINT BETWEEN ABOUT 0 TO 200*C., SAID CONDENSATION BEING CONDUCTED AT A TEMPERATURE BETWEEN 30 TO 40*C.
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) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |