Patent US3534886A successfully refreshed from Google Patents.
Patent US2626266A successfully refreshed from Google Patents.
US2626266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of arylhalosilanes
Assignee: Dow Silicones Corp
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Filing: 1948-10-16
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Granted: 1953-01-20
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Expires: 1968-10-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE PROCESS WHICH COMPRISES REACTING A BENZENOID HYDROCARBON FREE OF ALIPHATIC UNSATURATION IN ANY SIDE CHAINS WITH TRICHLOROSILANE IN THE PRESENCE OF A BORON HALIDE AT A TEMPERATURE ABOVE 230* C., AT LEAST A PORTION OF THE REACTION MIXTURE BEING IN CONDENSED PHASE, WHEREBY TO PRODUCE A TRICHLOROSILYL DERIVATIVE OF THE BENZENOID HYDROCARBON.
Claim 2
Dependent Claim
53 words
THE PROCESS WHICH COMPRISES REACTING A BENZENOID HYDROCARBON FREE OF ALIPHATIC UNSATURATION IN ANY SIDE CHAINS WITH TRICHLOROSILANE IN THE PRESENCE OF A BORON HALIDE AT A TEMPERATURE ABOVE 230* C., AT LEAST A PORTION OF THE REACTION MIXTURE BEING IN CONDENSED PHASE, WHEREBY TO PRODUCE A TRICHLOROSILYL DERIVATIVE OF THE BENZENOID HYDROCARBON.
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) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |