DOERENTRUPER SAND & THONWERK has a total of 35 patent applications. Its first patent ever was published in 1950. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets thermal processes, materials and metallurgy and civil engineering are KERAMISCHE IND BEDARFS AKT GES, RIEDHAMMER GMBH CO KG and GROOM BRYAN LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 11 | |
#2 | France | 3 | |
#3 | United Kingdom | 3 | |
#4 | Sweden | 3 | |
#5 | Austria | 2 | |
#6 | Belgium | 2 | |
#7 | Switzerland | 2 | |
#8 | Finland | 2 | |
#9 | Italy | 2 | |
#10 | Japan | 2 | |
#11 | United States | 2 | |
#12 | Spain | 1 |
# | Industry | |
---|---|---|
#1 | Thermal processes | |
#2 | Materials and metallurgy | |
#3 | Civil engineering | |
#4 | Chemical engineering |
# | Technology | |
---|---|---|
#1 | Details of furnaces | |
#2 | Furnaces | |
#3 | Building materials | |
#4 | Finishing work on buildings | |
#5 | General building constructions | |
#6 | Separating solids using liquids | |
#7 | Structural elements | |
#8 | Cleaning | |
#9 | Treatment of glass | |
#10 | Doors and windows |
# | Name | Total Patents |
---|---|---|
#1 | Florian Rudolf | 9 |
#2 | Herrmann Albert | 5 |
#3 | Florian Rudolf Dipl Ing | 4 |
#4 | Mueller Heinrich August Dipl I | 2 |
#5 | Florian R | 2 |
#6 | Borsch Alfred | 2 |
#7 | Aruberuto Heruman | 1 |
#8 | Herrmann A | 1 |
#9 | Leo Jan Dipl-Ing | 1 |
#10 | Rudolf Florian | 1 |
Publication | Filing date | Title |
---|---|---|
DE3002763A1 | Refractory mass based on dry quartz or silica grains - plus binder which decomposes when heated to form only silica | |
DE2906815A1 | INDUCTION POT OVEN AND METHOD FOR THE PRODUCTION THEREOF | |
US4117052A | Method and arrangement for use in lining articles, particularly melting oven | |
ATA143077A | Method and device for producing a melting oven | |
DE2652643B1 | Process for completing a melting furnace | |
DE2414170A1 | Vibrator for compacting furnace plugs - adjustable to suit furnaces of different heights and dias | |
DE2414060A1 | PROCESS FOR MANUFACTURING A MELTING FURNACE AND DEVICE FOR CARRYING OUT THE PROCESS | |
DE2414092A1 | Purification of quartz sand - using ultrasonic vibration | |
DE2317942A1 | EXTERNAL WINDOW SILL | |
DE2251087A1 | FACADE PANEL MADE OF CERAMIC PANELS AND / OR STRAPS | |
DE881627C | Process for the production of calcined quartz artificial stones and refractory masses | |
DE863175C | Process for the production of calcined quartz artificial stones and refractory masses |