WALTHER BETHGE has a total of 14 patent applications. Its first patent ever was published in 1939. It filed its patents most often in Germany, United Kingdom and United States. Its main competitors in its focus markets electrical machinery and energy, transport and materials and metallurgy are LAMINAHEAT HOLDING LTD, FLEXWATT CORP and VER CHEMISCHE WERKE A G.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 8 | |
#2 | United Kingdom | 3 | |
#3 | United States | 2 | |
#4 | Finland | 1 |
# | Industry | |
---|---|---|
#1 | Electrical machinery and energy | |
#2 | Transport | |
#3 | Materials and metallurgy | |
#4 | Surface technology and coating | |
#5 | Machine tools | |
#6 | Machines | |
#7 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Special electric heating or lighting | |
#2 | Vehicle servicing | |
#3 | Layered products | |
#4 | Aeroplanes | |
#5 | Treatment of glass | |
#6 | Shaping of plastics | |
#7 | Doors and windows | |
#8 | Cables and insulators | |
#9 | Parachutes | |
#10 | Making metal sheets |
# | Name | Total Patents |
---|---|---|
#1 | Bethge Walther | 6 |
#2 | Walther Bethge | 2 |
#3 | Arthur Egle | 2 |
#4 | Hermann Wende | 1 |
Publication | Filing date | Title |
---|---|---|
US3635777A | Apparatus for emplacing filament-shaped materials into thermoplastic materials, methods for using said apparatus and products produced thereby | |
GB831735A | Improvements in or relating to electrical sheet-type heaters | |
DE1103480B | Process for the production of a surface heater | |
GB846570A | Method of producing a durable mechanical bond between glass and another material | |
DE1056337B | Process for producing a permanent mechanical connection between glass and another substance and application of the process to the production of double glass panes | |
GB747839A | Process for the manufacture of thin wire with a non-shining surface, and wire manufactured according to said process | |
US2813960A | Electric surface heater | |
DE935986C | Electric surface heater |