Trade marks related to ultra pure gases and special gases and special gas mixtures for industrial technical research and science purposes in particular gases being detection calibration and testing gases protective and shielding gases reactive and active gases being welding cutting and scrubbing gases being process treatment and work gases being gases for the treatment and processing of materials for electronic manufacturing and process technology in particular clean air nitrogen oxygen carbon dioxide and carbon monoxide ammonia and saturated and non saturated hydrocarbon gases hydrocarbon compounds hydrogen noble gases isotope gases and special gaseous substances of various kinds including nitrous oxide ammonia and sulphur compounds silanes hydrogen compounds volatile organic compounds chlorine and fluorine and derivatives thereof fchcs freons nitrogen compounds ozone halogens halogen compounds boron silicon and sulphur compounds and mixtures of the aforesaid gases in Class 1.

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