GLASS CRYSTAL WORKS

Brand Owner Address Description
ROYAL LEERDAM B.V. Koninklijke Nederlandsche Glasfabriek "Leerdam" Lingedijk 8 Leerdam NL-4142 Netherlands [ Glass and crystal works, namely, custom ordered blowing, etching, polishing and sculpting for others ];[ Office supplies, namely, paper weights, pencil holders and note holders; packaging material made of plastic ];Color is not claimed as a feature of the mark.;Crockery, drinking vessels, vases, carafes, drinking glasses, sculptures, all made of glass or crystal;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A known quartz glass crucible for crystal pulling consists of a crucible wall, having an outer layer which is provided in an external area thereof with a crystallisation promoter which results in crystallisation of quartz glass, forming cristobalite when the quartz glass crucible is heated according to specified use in crystal pulling. The aim of the invention is to provide a quartz glass crucible which has a long service life. As a result, the crystallisation promoter contains, in addition to a silicon, a first component which acts as a reticulating agent in quartz glass and a second component which is free of alkali metals and which acts as an agent forming separating points in quartz glass. The above mentioned components are contained and incorporated into a doping area (8) of the outer layer (6) having a layer thickness of more than 0.2 mm.