Ernst Leitz Wetzlar Gmbh

Wild Leitz Gmbh

Westerwald Glasstein Gmbh

Henning Franek

Heinz Broemer

Norbert Meinert

Klaus Deutscher

Werner Huber

Ralf Reck

Rainer Dreuth

Jochen Heinz

Wolfram Beier

Roland Schaefer

Volker Strunz

Klaus-Konrad Deutscher, Deceased

Dirk Bohr

Klaus Deutscher, Deceased

Jochen Kriegesmann

Waldemar Bluethgen

Dieter Gelzenleuchter

Wolfgang Rosenkranz

A temperature resistant material consisting of fiber-reinforced glass and fiber-reinforced ceramics, respectively, is described as asbestos substitute in devices for handling hot glass, glass ceramics and ceramics objects.

Temperature resistant material, particularly as substitute for asbestos

Optical fluorophosphate glass with anomalous positive incremental

Optical fluorophosphate glass which is based on Mg(PO.sub.3).sub.2, Ca(PO.sub.3).sub.2, Ba(PO.sub.3).sub.2, Al(PO.sub.3).sub.3, MgF.sub.2, CaF.sub.2, SrF.sub.2, AlF.sub.3, BaO and SrO and has a refractive index n.sub.e between 1.515 and 1.546, an Abbe value .nu..sub.e between 75.8 and 77.4 and a positive anomalous partial dispersion value .DELTA..nu..sub.e between 14.85 and 15.15. The glass comprises (in weight-%) 2.4-2.7 Mg; 4.5-4.9 Ca; 15.9-17.6 Sr; 20.2-22.3 Ba; 5.6-6.2 Al; 8.8-9.7 P; 22.0-24.3 F and 15.7-17.4 O. The improved physico-chemical parameters, such as linear expansion coefficient, glass transition temperature T.sub.g, density .zeta., Knoop-hardness HK, etc., are stated. Finally, a production process for this optical glass is described.

Process for producing an optical fluorophosphate glass having anomalous

Use of an oxide ceramic material for compression molds for shaping

Tooth-root implant with long-term resistance to repetitive stresses

Optical fluorophosphate glass having anomalous positive partial

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

Composite plastics-based material for prosthesis purposes

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.

Auditory ossicle prosthesis and process for its manufacture

Auditory canal wall prosthesis and process for producing same

Growing community of inventors

Braunfels-Tiefenbach, Germany

Henning Franek