| Patents for G05D 9 - Level control, e.g. controlling quantity of material stored in vessel (4,688) |
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| 01/23/2001 | US6178393 Pump station control system and method |
| 01/23/2001 | US6177874 Liquid supplying device for providing chemical solution with a liquid level sensor |
| 01/17/2001 | EP1069252A1 Flow regulating device for rainwater retention basin |
| 01/16/2001 | US6173973 Forestry machine swing-house leveling mechanism |
| 01/10/2001 | CN2414401Y Liquid level automatic controller for storage tank |
| 01/10/2001 | CN2414398Y Water level indication controller |
| 01/03/2001 | CN2413272Y Coal bunker level display control device |
| 12/27/2000 | CN2412305Y Anti-idling full automatic controller for water pump |
| 12/27/2000 | CN2412206Y Liquid level automatic regulator |
| 12/21/2000 | WO2000077638A1 Electro-statically shielded processing module |
| 12/21/2000 | CA2376737A1 Electro-statically shielded processing module |
| 12/13/2000 | CN2410664Y Liquid level automatic controller |
| 12/06/2000 | CN2409540Y Auto-controller for electric machine |
| 12/06/2000 | CN2409539Y Overflow liquid level controlling valve |
| 11/28/2000 | US6154144 Auto shutoff overflow controller |
| 11/21/2000 | US6148838 Automated processing liquid drain system |
| 11/16/2000 | WO2000025572A9 Improved automatic plant watering system and water level control |
| 11/15/2000 | CN2406274Y Domestic water-basin water-suction automatic controller |
| 11/15/2000 | CN2406225Y Liqud quantitative controlling device |
| 11/02/2000 | EP1048016A1 Liquid level control system |
| 11/01/2000 | CN2404144Y Liquid level automatic and hand-operated controlling and alarming device |
| 10/25/2000 | CN2403009Y Liquid level control float |
| 10/11/2000 | EP1042708A1 Fluidic level control systems |
| 10/04/2000 | EP0820611B1 Pneumatic (underpressure) liquid level regulation |
| 10/03/2000 | US6125642 Oil level control system |
| 09/28/2000 | WO2000057059A1 Safety control system of a hydraulic circuit |
| 09/27/2000 | EP1039271A2 Fill level regulation for liquids in pressurized containers |
| 09/27/2000 | CN2398659Y Double A. C. electrode water-level controller |
| 09/27/2000 | CN1267941A Hydraulically controlled stepdown starting cabinet with both upper and lower pumps |
| 09/21/2000 | DE19923241A1 Füllstandsregelung für Flüssigkeiten in Druckbehältern Level control for fluids in pressure containers |
| 09/12/2000 | US6118190 Fail-safe system |
| 09/08/2000 | WO2000052544A1 Liquid treatment device with storage tank and delivery tank |
| 09/06/2000 | CN1265466A Automatic liquid level regulating system and its design method |
| 09/05/2000 | US6112947 Adjustable tank overflow for fluid chemicals |
| 08/23/2000 | CN2393216Y Water-suction controller for on-off of liquid-level switch, hydraulic switch |
| 08/16/2000 | CN2392200Y 自动供水监控器 Automatic Water Monitor |
| 08/02/2000 | EP0877897B1 Method and device for drawing condensate off from compressed-gas systems |
| 08/01/2000 | US6095178 System for monitoring and controlling the level of a liquid in a closed container |
| 07/19/2000 | CN2388630Y Water level control device for full-automatic washing machine |
| 07/19/2000 | CN2388629Y Automatic control device for water tower |
| 07/12/2000 | CN2387570Y Level detector |
| 07/12/2000 | CN2387569Y Start-stop pumping automatic monitoring controller for oil well |
| 06/28/2000 | CN2385362Y Liquid level artificial display controller |
| 06/28/2000 | CN2385161Y Automatic control valve |
| 06/21/2000 | CN2384245Y Full-automatic water level controller |
| 06/20/2000 | US6076399 Level switch filter for sewer basin |
| 06/14/2000 | CN2383096Y Spring sheet liquid level controller |
| 05/24/2000 | CN2379824Y Device for automatic monitoring level of dyeing wastewater pool |
| 05/24/2000 | CN2379823Y Infra red device for controlling oil level |
| 05/11/2000 | WO2000025572A1 Improved automatic plant watering system and water level control |
| 05/03/2000 | CN2376638Y Intelligent water level controller |
| 05/03/2000 | CN2376637Y Water level automatic controller for small impounding reservoir |
| 04/26/2000 | EP0995084A1 Bulk materials loading device |
| 04/26/2000 | CN1251643A Self-metering reservoir |
| 04/19/2000 | CN2374878Y Pond water level controller |
| 04/11/2000 | US6048487 Recoating stereolithographic layers |
| 04/05/2000 | CN1249450A Liquid level water with display, control and alarm functions |
| 03/30/2000 | DE19811920A1 Rain water storage equipment for supplying water for domestic purposes unless water level in storage cistern falls below a minimum level |
| 03/29/2000 | CN2371582Y Electrode device of electric contact type water level autocontroller for pump |
| 03/22/2000 | EP0987442A1 Pumping station with timer |
| 03/22/2000 | CN2370447Y Level controller for deep well pump |
| 03/22/2000 | CN1248097A Universal AC/DC passive solid relay |
| 03/22/2000 | CN1247974A Pneumatic liquid level indicator |
| 03/08/2000 | CN2368060Y Self-control out-let valve for running water |
| 02/29/2000 | US6029717 High aspect ratio containers for ultrahigh purity chemicals |
| 02/23/2000 | CN2365702Y Automatic controller for water pump |
| 02/23/2000 | CN2365701Y Hydraulic water level control valve |
| 02/23/2000 | CN2365700Y Liquid full self controller |
| 02/23/2000 | CN2365699Y 液位控制器 Level Controller |
| 02/23/2000 | CN2365698Y Mechanical automatic water controller |
| 02/22/2000 | US6026837 Automated chemical drain system |
| 02/16/2000 | CN2364489Y 水位显示控制器 Level display controller |
| 02/16/2000 | CN2364488Y Microcomputer proportional valve controller |
| 02/16/2000 | CN2364440Y 动态浮子 Dynamic float |
| 02/01/2000 | US6019114 Self-metering reservoir |
| 01/26/2000 | CN2360872Y Cistern water level auto-controller with permanent-magnet water valve |
| 01/26/2000 | CN2360871Y Fluid level control device |
| 01/26/2000 | CN2360870Y Piston type water level controlling device |
| 01/25/2000 | US6016697 Capacitive level sensor and control system |
| 01/19/2000 | EP0972156A1 Device and method for removing condensate from gas pressure systems |
| 01/13/2000 | DE19931106A1 Control or monitoring assembly for small-scale water treatment process or ground water pump |
| 01/12/2000 | CN2358473Y Water level controller for double pool |
| 01/05/2000 | CN2357353Y External liquid level auto-controller for liquid storing container |
| 12/22/1999 | EP0965075A1 A method of regulating the level in a buffer tank |
| 12/22/1999 | CN2355351Y Automatic controller for underground water level |
| 12/21/1999 | US6003778 Automotive oil level control apparatus |
| 12/09/1999 | DE19825443A1 Level controller for pneumatic and electric pressure sensor |
| 12/08/1999 | EP0962751A2 Resistive liquid level sensing and control system |
| 12/08/1999 | CN2352979Y Instrument for automatically controlling level of crude oil dehydrating tank |
| 12/08/1999 | CN2352933Y Device for measuring and controlling liquid level of torpedo hot metal mixer car |
| 12/08/1999 | CN2352269Y Apparatus for applying automatically polytetrafluorethylene emulsion in cigarette plant |
| 12/01/1999 | EP0960365A2 Self-metering reservoir |
| 12/01/1999 | CN2351777Y Universal multi-section displaying liquid level automatic controlling instrument |
| 12/01/1999 | CN2351776Y Liquid level automatic alarming controller |
| 12/01/1999 | CN2351775Y Liquid level display controlling device |
| 11/24/1999 | CN2350793Y Microcomputerized liquid level controlling device |
| 11/24/1999 | CN2350792Y Full-automatic level controller for water tower and water well |
| 11/10/1999 | CN2348419Y Water level measuring control device |
| 11/10/1999 | CN2348418Y Permanent-magnet liquid level self-controlling valve |
| 11/10/1999 | CN1046234C Apparatus and method for monitoring ink-supply in ink tank of offset printing press |