Patent US3031268A successfully refreshed from Google Patents.
US3031268A
Expired / Lapsed
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Process of purifying silane
Assignee: Avantor Performance Materials LLC
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Filing: 1955-09-06
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Granted: 1962-04-24
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Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Carlyle E Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:44
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/04; C01B33/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF PURIFYING SILANE CONTAMINATAED WITH HYDRIDES OF ELEMENTS OF GROUP FIVE OF THE PERIODIC TABLE WHICH COMPRISES PASSING A STRAEAM OF SILANE CONTAMINATED WITH SAID HYDRIDES OF GROUP FIVE ELEMENTS WHILE IN GASEOUS FORAM THROUGH AN ANHYDRROUS INERT ORGANIC SOLVENT SOLUTION OF A LEWIS ACID SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND HYDROGEN HALIDES IN THE ABSENCE OF AIR, WHEREBY THE SAID HYDRIDES OF GROUP FIVE ELEMENTS REACT WITH LEWIS ACID AND THEREAFTAER REMOVING THE GASEOUS SILANE FROM CONTACT WITH SAID LEWIS ACID AND RECOVERING THE SILANE IN PURIFIED FORM.
Claim 2
Independent Claim
94 words
A METHOD OF PURIFYING SILANE CONTAMINATAED WITH HYDRIDES OF ELEMENTS OF GROUP FIVE OF THE PERIODIC TABLE WHICH COMPRISES PASSING A STRAEAM OF SILANE CONTAMINATED WITH SAID HYDRIDES OF GROUP FIVE ELEMENTS WHILE IN GASEOUS FORAM THROUGH AN ANHYDRROUS INERT ORGANIC SOLVENT SOLUTION OF A LEWIS ACID SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND HYDROGEN HALIDES IN THE ABSENCE OF AIR, WHEREBY THE SAID HYDRIDES OF GROUP FIVE ELEMENTS REACT WITH LEWIS ACID AND THEREAFTAER REMOVING THE GASEOUS SILANE FROM CONTACT WITH SAID LEWIS ACID AND RECOVERING THE SILANE IN PURIFIED FORM.
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) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |