U.S. Philips Corporation

Heinz Scholz

Rolf Clasen

Hans Jungk

A method of manufacturing glass bodies, in which the starting material for the glass body, in the form of microdispersed SiO.sub.2 particles, is used to form an open-pore green body which is subjected to a cyclic purification process in which the impurities present in the green body react with a purifying gas which is heated to a temperature in the range from 600.degree. to 900.degree. C., after which the green body is sintered; in each cycle of the said process, the arrangement holding the green body to be purified being flushed and subsequently evacuated.

Method of manufacturing glass bodies

A method for the manufacture of glass bodies, in which a thixotropic suspension, being the starting material for the glass body, is used to form a porous green body which is subsequently purified and sintered, the starting material being liquefied in a mould by subjecting it to mechanical forces, and subsequently freeing it of the influence of the said forces, after which it solidifies again to form a green body.

Method for the manufacture of glass bodies

Method of producing a black coating highly absorbant in the solar spectrum range by electrodeposition from an aqueous solution containing a soluble cobalt compound and a large amount of alkali thiocyanate.

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Aachen, Germany

Heinz Scholz