US3223474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of hydrolyzing silicon chlorides
Assignee: Wacker Chemie AG
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Filing: 1962-03-07
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Granted: 1965-12-14
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Expires: 1982-03-07
Abstract
No abstract record available.
Inventors
- 👤 Nitzsche Siegfried
- 👤 Buchheit Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:01
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874; C07F7/0876; C08; C08G; C08G77/00; C08G77/04; C08G77/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
THE METHOD OF HYDROLYZING A CHLOROSILANE OF THE GENERAL FORMULA RXHYSICL4-(X+Y) WHEREIN EACH R IS A MONOVALENT ORGANIC RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RADICALS, HALOGENATED HYDROCARBON RADICALS, CYANOALKYL RADICALS, CYANOALKOXYALKYL RADICALS, HYDROXYALKYL RADICALS ESTERIFIED WITH CARBOXYLIC ACIDS AND CARBOXYALKOXY RADICALS ESTERIFIED WITH ALCOHOLS, X HAS A VALUE FROM 0 TO 3 INCLUSIVE, Y HAS A VALUE FROM 0 TO 3 INCLUSIVE AND THE SUM OF X+Y HAS A VALUE FROM 1 TO 3 INCLUSIVE CONSISTING ESSENTIALLY OF REACTING SAID SILANE WITH A MIXTURE OF WATER AND ETHYLENE OXIDE, THE WATER AND ETHYLENE OXIDE BEING PRESENT IN QUANTITIES SUCH THAT THER EIS PRESENT AT LEAST A MOLAR EQUIVALENT OF WATRER AND OF ETHYLENE OXIDE FOR EACH GRAM-ATOM OF CHLORINE PRESENT IN THE CHLOROSILANE.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |