DRU BV has a total of 25 patent applications. Its first patent ever was published in 1981. It filed its patents most often in Netherlands, Austria and Belgium. Its main competitors in its focus markets thermal processes, control and packaging and shipping are COUVINOISE SA, PERRY HEATING APPLIANCES LTD and HEISLER & LEINS THERMOSTAR.
# | Country | Total Patents | |
---|---|---|---|
#1 | Netherlands | 5 | |
#2 | Austria | 1 | |
#3 | Belgium | 1 | |
#4 | Canada | 1 | |
#5 | Switzerland | 1 | |
#6 | Czechoslovakia | 1 | |
#7 | Germany | 1 | |
#8 | Denmark | 1 | |
#9 | EPO (European Patent Office) | 1 | |
#10 | Finland | 1 | |
#11 | France | 1 | |
#12 | United Kingdom | 1 | |
#13 | Hungary | 1 | |
#14 | Italy | 1 | |
#15 | Lithuania | 1 | |
#16 | Norway | 1 | |
#17 | Poland | 1 | |
#18 | Sweden | 1 | |
#19 | Slovenia | 1 | |
#20 | United States | 1 | |
#21 | Yugoslavia (Serbia and Montenegro) | 1 |
# | Industry | |
---|---|---|
#1 | Thermal processes | |
#2 | Control | |
#3 | Packaging and shipping |
# | Technology | |
---|---|---|
#1 | Fluid heaters | |
#2 | Burners | |
#3 | Systems controlling non-electric variables | |
#4 | Domestic stoves | |
#5 | Air-conditioning | |
#6 | Transferring liquids |
# | Name | Total Patents |
---|---|---|
#1 | Meijer Willem | 8 |
#2 | Grob Guus Everhardus | 5 |
#3 | Mecking Fransiscus Bernhardus | 4 |
#4 | Mecking F B A | 2 |
#5 | Grob G E | 2 |
#6 | Grob Guus E | 1 |
#7 | Medking Fransiscus Bernhardus | 1 |
#8 | Mecking Fransiscus B A | 1 |
#9 | Meijer W | 1 |
#10 | Mejer Willem | 1 |
Publication | Filing date | Title |
---|---|---|
US5490778A | Burner | |
NL9000883A | Ceramic burner. | |
NL8701374A | Enclosed heating arrangement - has balanced thermal draught, and combustion air inlet, also exhaust gas outlet in combined ducting | |
NL8300060A | Beer tap connection to central storage tank - has two-way valve providing tapping and rinsing functions for several outlets | |
NL8104427A | Multiple-room climate-regulation equipment - has central regulator for control units serving individual rooms | |
NL8102695A | Main efficiency boiler without fan. |