LIQUID PREPARATION FOR THE REDUCTION OF FREE OXYGEN AND THE PRESERVATION OF WATER
- Application ID: EP13702965
- Status: █ PATENT GRANTED
This EP application has the IPC combination C02 (TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE) and C23 (COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL). We found, that Berendt Leyh & Hering, Charrier Rapp & Liebau are specialized in this combination either. For a similar patent, they might be a good choice.