ZAHN & CO G M B H has a total of 44 patent applications. Its first patent ever was published in 1927. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets materials and metallurgy, chemical engineering and surface technology and coating are URTEK LLC, GUARESCHI PIETRO and SCHWEIZERHALL SAEUREFAB.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 20 | |
#2 | France | 14 | |
#3 | United Kingdom | 6 | |
#4 | United States | 3 | |
#5 | Austria | 1 |
# | Industry | |
---|---|---|
#1 | Materials and metallurgy | |
#2 | Chemical engineering | |
#3 | Surface technology and coating | |
#4 | Basic materials chemistry |
# | Name | Total Patents |
---|---|---|
#1 | Schaetzler Friedrich | 2 |
#2 | Hans Barkholt | 2 |
#3 | Knauer Dr Helmut | 1 |
#4 | Wolters Hermann | 1 |
#5 | Schaedel Dipl-Ing Heinz | 1 |
#6 | Mueller Johann | 1 |
#7 | Spitzner Herbert Dipl-Ing | 1 |
#8 | Helms Dr Gerd | 1 |
#9 | Jungmann Guenther | 1 |
#10 | Doell Dr Richard | 1 |
Publication | Filing date | Title |
---|---|---|
GB1057784A | Process for preparing alkali metal chromate solutions | |
GB1057678A | Process for preparing alkali metal chromate solutions | |
GB1060003A | Process and apparatus for the alkaline roasting of materials containing chromium oxide | |
GB473248A | An improved process for obtaining sulphur from gases containing hydrogen sulphide | |
US2118802A | Method of conserving pickling liquor | |
US2169379A | Elemental sulphur from hydrocarbon gases containing hydrogen sulphide | |
GB447003A | Improvements in or relating to the production of zinc white | |
GB406919A | Improvements in and relating to a process for carrying out highly exothermic oxidation processes |