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US3641077A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for preparing alkoxy derivatives of silicon germanium tin thallium and arsenic

Assignee: EUGENE G ROCHOW
•
Filing: 1970-09-01
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Granted: 1972-02-08
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Expires: 1990-09-01
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Abstract

Abstract THE INVENTION PROVIDES A METHOD FOR PREPARING OGANIC METAL COMPOUNDS OF THE METALS GERMANIUM, TIN, THALLIUM, ARSENIC AND MORE PARTICULARLY OF SILICON AND COMPRISES INTRODUCING AN ALCOHOL, SUCH AS METHANOL, ETHANOL, N-PROPANOL, AND ISO-BUTANOL, SLOWLY BELOW THE SURFACE OF A SUSPENSION IN SILICONE OIL OF A FINELY DIVIDED MIXTURE OF ONE OF THE ABOVE METALS AND CATALYST, SUCH AS COPPER, CONTAINING ABOUT 9 PARTS BY WEIGHT OF THE SELECTED METAL AND ABOUT 1 PART BY WEIGHT OF CATALYST WHILE HEATING THE SUSPENSION AT A TEMPERATURE BETWEEN ABOUT 250*C, AND ABOUT 300*C. TO CAUSE THE ALCOHOL TO REACT WITH THE SELECTED METAL TO FORM AN ORGANIC METAL COMPOUND IN VAPOR FORM WHICH IS CONDENSED AND COLLECTED, THE DESIRED ORGANIC METAL COMPOUND BEING ISOLATED BY FRACTIONAL DISTILLATION OF THE CONDENSATE.

Inventors

  • 👤 Eugene G Rochow

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 06:57
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/66; C07F9/68; C07F5/00; C07F5/003; C07F7/00; C07F7/003; C07F7/02; C07F7/025

Claims Analysis

Total Claims: 0
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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) 1975-02-07 1975-08-09 1976-02-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-02-07 1979-08-09 1980-02-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-02-07 1983-08-09 1984-02-08 $7700.00 Window Closed / Lapsed

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