Ernst Leitz Wetzlar Gmbh

Klaus Deutscher

Heinz Broemer

Henning Franek

Ralf Reck

Inorganic material resisting to high temperatures for installations intended to form structural glass elements which, owing to the precision and the quality of the forming surface, do not require after forming any other surface treatment. The material is comprised of at least one forming surface based on at least one from the groups of a metal oxide a double metal oxide, and a crystalline solid solution. It has a monocrystalline structure. Preferred materials are Al.sub.2 O.sub.3, Cr.sub.2 O.sub.3, MgAl.sub.2 O.sub.4 and/or ZrO.sub.2.

High temperature-resistant material for devices used for forming glass

An auditory ossicle prosthesis is described comprising a plate (1) with a groove (7) applied to its upper side and a shaft (2) eccentrically applied to its lower side. The prosthesis consists of a bioactive material and contains additionally at least in one partial area an insoluble bioinert material, which is applied mainly as a coating material in the form of an additive layer (S(+)) or a subtractive layer (S(-)). Suitable coating processes and substances are disclosed. If S(-) layers are applied, they may be exposed subsequently to a sealing and/or silanizing treatment.

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Wetzlar, Germany

Klaus Deutscher