Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Gesellschaft MIT Beschraenkter Haftung

Patent-truehand-gesellschaft Fuer Electrische Gluelampen Mbh

Osram Gmbh

Lothar Vollmer

Andreas Hohlfeld

Clemens Barthelmes

Andreas Naujoks

Jürgen Becker

Andreas Ponnier

Detlef Günther

A method for producing a molybdenum film for lamp construction is provided. The method may include roughening at least a part of the surface of the molybdenum film by sandblasting with a sandblasting means, wherein the sandblasting means contains at least one of aluminum oxide and quartz sand as well as at least one further component.

Method for producing a molybdenum film for the construction of a lamp and molybdenum film and lamp with molybdenum film

Method for producing a high-pressure discharge lamp

In the method for making a reflective coating at the ends of the discharge essel of a high-pressure discharge lamp, the suspension for making the coating includes from 0.5 to 5% by weight of a highly dispersed pyrogenic silicic acid - aluminum oxide mixture, 0 to 5% by weight of acetic acid, 0 to 1% by weight of boric acid, 24 to 55% by weight of water, and zirconium oxide to make up 100% by weight. By using the novel suspension, the previously required process steps of baking and white-burning can be omitted.

Method to make a reflective coating on high-pressure discharge lamps

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Berlin, Germany

Lothar Vollmer