US3069452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a silane mixture
Assignee: Evonik Operations GmbH
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Filing: 1960-01-18
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Granted: 1962-12-18
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Expires: 1980-01-18
Abstract
No abstract record available.
Inventors
- 👤 Rossmy Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:35
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN A PROCESS OF REACTING PULVERIZED SILICON WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL HALIDES, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SILICON, PRIOR TO THE REACTION WITH SAID MEMBER, A SILICON-COPPER ALLOY CATALYST IN POWDER FORM, THE SILICON CONTENT OF SAID CATALYST BEING BETWEEN ABOUT 5 TO 25%.
Claim 2
Dependent Claim
54 words
IN A PROCESS OF REACTING PULVERIZED SILICON WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL HALIDES, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID SILICON, PRIOR TO THE REACTION WITH SAID MEMBER, A SILICON-COPPER ALLOY CATALYST IN POWDER FORM, THE SILICON CONTENT OF SAID CATALYST BEING BETWEEN ABOUT 5 TO 25%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |