US3560545A
Expired / Lapsed
US
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Process for preparing methyl or phenylchlorosilanes
Assignee: NUENCHRITZ CHEMIE
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Filing: 1968-05-31
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Granted: 1971-02-02
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Expires: 1988-05-31
Abstract
Abstract PROCESS FOR PREPARING ORGANOCHLOROSILANES, NAMELY METHYL-OR PHENYLCHLOROSILANES WHEREIN SILICON-CONTAINING STARTING MATERIALS ARE REACTED IN THE PRESENCE OF A COPPER CATALYST WITH METHY- OR PHENYLCHLORIDE WHILE BEING SHAKEN IN A VIBRATING ZONE DURING THE REACTION. IN ONE EMBODIMENT, THE CATALYST IS PRODUCED DURING THE REACTION FORM PARTS OF THE GRINDING MECHANISM. THE PROCESS IS CARRIED OUT PREFERABLY IN A VIBRATING MILL.
Inventors
- 👤 Richard Schrader
- 👤 Hubert Hennek
- 👤 Karl Dreier
- 👤 Roland Bugge
- 👤 Joh Frohnert
- 👤 Wolfg Eichler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/28; B01J19/285; B01J8/00; B01J8/16; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |