DUPONT RES & INVEST SERVICE has a total of 19 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Germany, France and Austria. Its main competitors in its focus markets engines, pumps and turbines, thermal processes and electrical machinery and energy are LAING KARSTEN A, STANDARD MAGNET AG and NANJING CIGU LTD CORP.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 6 | |
#2 | France | 4 | |
#3 | Austria | 3 | |
#4 | United Kingdom | 2 | |
#5 | Canada | 1 | |
#6 | Italy | 1 | |
#7 | Japan | 1 | |
#8 | United States | 1 |
# | Industry | |
---|---|---|
#1 | Engines, pumps and turbines | |
#2 | Thermal processes | |
#3 | Electrical machinery and energy | |
#4 | Environmental technology | |
#5 | Mechanical elements |
# | Name | Total Patents |
---|---|---|
#1 | Walker Alan J | 3 |
#2 | Laing Nikolaus | 2 |
#3 | Walker Alan John | 1 |
#4 | Heuvel E Jan Van Den | 1 |
#5 | Daburiyuu Jii Heiwaado | 1 |
Publication | Filing date | Title |
---|---|---|
ATA398276A | Magnetic response for an electric motor | |
ATA395779A | Magnetic response for electric motors | |
DE2623438A1 | Magnetic flux return system - is for motors with spherical airgap in hermetically sealed chemical pumps | |
US4072446A | Electromagnetically driven pumps | |
CA1044515A | Electromagnetically driven pumps | |
DE2438830A1 | MAGNETIC CLUTCH | |
GB1435435A | Heat exchanger system | |
DE2420734A1 | Pump for circulating cooling fluid - has rotor with sealed end of shaft forming part of magnetic circuit | |
DE2420733A1 | Air conditioner for rooms, buildings, etc. - with two rotary heat-exchange fans | |
GB1494193A | Fluid energy conversion machines |