US2945873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating mixtures of chlorosilanes
Assignee: Union Carbide Corp
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Filing: 1957-05-15
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Granted: 1960-07-19
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Expires: 1977-05-15
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Shaffer
- 👤 Arthur N Pines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:21
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR SEPARATING CHLOROSILANE MIXTURE CONTAINING A FIRST CHLOROSILANE PART AND A SECOND CHLOROSILANE PART, THE FIRST CHLOROSILANE PART BEING MORE RAPIDLY ALCOHOLIZABLE THAN THE SECOND CHLOROSILANE PART, SAID PROCESS COMPRISING CONTACTING THE CHLOROSILANE MIXTURE WITH AN ALCOHOL, SAID CONTACT TIME BEING LESS THAN THAT REQUIRED TO COMPLETELY ALCOHOLIZE ALL CHLOROSILANES IN SAID MIXTURE THEREBY FORMING AN ALCOHOLIZED CHLOROSILANE PART AND AN UNALCOHOLIZED CHLOROSILANE PART, AND THEREAFTER SEPARATING THE UNALCOHOLIZED CHLOROSILANE PART FROM THE ALCOHOLIZED CHLOROSILANE PART.
Claim 2
Dependent Claim
78 words
A PROCESS FOR SEPARATING CHLOROSILANE MIXTURE CONTAINING A FIRST CHLOROSILANE PART AND A SECOND CHLOROSILANE PART, THE FIRST CHLOROSILANE PART BEING MORE RAPIDLY ALCOHOLIZABLE THAN THE SECOND CHLOROSILANE PART, SAID PROCESS COMPRISING CONTACTING THE CHLOROSILANE MIXTURE WITH AN ALCOHOL, SAID CONTACT TIME BEING LESS THAN THAT REQUIRED TO COMPLETELY ALCOHOLIZE ALL CHLOROSILANES IN SAID MIXTURE THEREBY FORMING AN ALCOHOLIZED CHLOROSILANE PART AND AN UNALCOHOLIZED CHLOROSILANE PART, AND THEREAFTER SEPARATING THE UNALCOHOLIZED CHLOROSILANE PART FROM THE ALCOHOLIZED CHLOROSILANE PART.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |