Patents for G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value (1,435) |
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07/12/2011 | US7975496 Vehicle air conditioning system |
07/06/2011 | CN101271337B PH value monitoring device and method based on CAN bus network gate |
06/22/2011 | EP2334431A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present |
06/22/2011 | DE102010054346A1 Feuchtmittel Härteregelung Dampening hardness control |
06/22/2011 | DE102010054345A1 Verfahren zum Aufbereiten eines Feuchtmittels einer Nassoffsetdruckmaschine A method for preparing a dampening solution to a wet offset printing machine |
06/14/2011 | US7958740 Vehicular air-conditioner |
06/09/2011 | WO2011068612A1 Application of visbreaker analysis tools to optimize performance |
06/08/2011 | CN101048710B Cascaded control of an average value of a process parameter to a desired value |
04/20/2011 | CN102023655A Method and system for automatically controlling ammonia injection and pH value of tower top of oil refining device |
03/23/2011 | EP2185989B1 Method and device for continuously processing contaminated fluids |
03/23/2011 | CN201773331U Alkalinity automatic control device |
03/23/2011 | CN101990456A Mixer, and device and method for monitoring or controlling said mixer |
03/02/2011 | EP2288432A1 Multi-stage accurate blending system and method |
02/16/2011 | CN201749376U Device capable of automatically supplementing liquid ammonia for etching container |
02/09/2011 | CN101214479B Colorful steel plate inert gas circulating heating curing method and equipment thereby |
01/26/2011 | CN101276225B PH value automatic balance liquid feeding method and apparatus |
01/19/2011 | CN201711089U pH regulating control system of wet process desulfurization equipment of small and middle sized boilers |
01/18/2011 | US7872062 Control of pH in formaldehyde-free binder systems |
01/13/2011 | WO2011004015A2 Management of a number of swimming pools |
12/22/2010 | CN101923361A Water-saving control method |
12/22/2010 | CN101923360A Water-saving control device |
11/23/2010 | CA2577096C Cascaded control of an average value of a process parameter to a desired value |
11/17/2010 | CN101888979A Method for operating a water softening system having two calibration characteristics and associated water softening system |
11/03/2010 | CN101875668A Method for continuously adjusting pH value of dilute aqueous agent in glyphosate production process |
10/27/2010 | EP2242565A1 Mixer, and device and method for monitoring or controlling said mixer |
10/27/2010 | CN201613126U 一种葡萄糖生产中的配酸配碱装置 One kind of glucose production with an acid with a base unit |
10/20/2010 | EP2241810A1 Flow rate control device |
10/14/2010 | WO2010116262A1 Apparatus and operating systems for manufacturing impregnated wood |
10/14/2010 | CA2758193A1 Apparatus and operating systems for manufacturing impregnated wood |
10/13/2010 | CN101861556A Control system for industrial water system and method for its use |
09/29/2010 | EP2233929A2 Reagent preparing apparatus and sample analyzer |
09/29/2010 | EP2231526A2 Method for operating a water softening system having two calibration characteristics and associated water softening system |
09/29/2010 | CN201594181U Intelligent control device for plant growth environment |
09/16/2010 | WO2010103151A1 Control system for the biological elimination of nitrogen from waste water through low-cost sensors |
09/15/2010 | CN101833341A Automatic control system of PH value in alkaline etching and control method thereof |
09/08/2010 | CN101139659B Method for reclaiming nickel from acidic nickel plating waste water |
08/25/2010 | EP2221136A1 Soldering assembly and method for recognising impurities contained in a solder |
08/25/2010 | EP2220545A2 Control system for industrial water system |
08/25/2010 | CN101815810A Method and device for preventing corrosion in hot water systems |
08/25/2010 | CN101813949A Electrochemical method for regulating pH value of solution in situ |
08/11/2010 | CN101274197B Automatic draining and supplying device for controlling pH of leaching tower, , and working method thereof |
08/04/2010 | CN201537459U SO3 concentration controlling device |
08/03/2010 | US7766180 Collapsible bulk cage liner |
07/22/2010 | WO2009020709A3 Control system for industrial water system |
07/21/2010 | CN101048709B Optimized air pollution control |
07/20/2010 | US7758833 Switching control for alternately performing sulfur oxide removal and particulate filter regeneration, and maintain the temperature of the NOx removing device or other catalysts for purifying exhaust gases within a proper range |
07/14/2010 | CN101776923A Device for high-precision regulating industrial process pH value and automatic control method thereof |
07/14/2010 | CN101776922A pH value control system in sulfonating neutralization process |
07/08/2010 | WO2010076432A1 Novel method for cultivating yeasts of the yarrowia genus |
07/01/2010 | WO2010075121A1 Control system for monitoring localized corrosion in an industrial water system |
07/01/2010 | US20100163469 Control system for monitoring localized corrosion in an industrial water system |
07/01/2010 | CA2748258A1 Control system for monitoring localized corrosion in an industrial water system |
06/29/2010 | US7744840 Selective catalytic reduction system and process using a pre-sulfated zirconia binder |
06/22/2010 | CA2515981C Method and device for controlling paper machine, and program and storage medium |
06/15/2010 | US7736595 selective catalytic reduction (SCR) analysis module that estimates ammonia (NH3) stored by an SCR catalyst, maximum NH3 storage capacity of SCR catalyst, NH3 slip downstream of SCR catalyst, NH3 oxidation, and NH3 conversion through reaction with nitrogen oxides (NOx); and dosing management module |
06/10/2010 | US20100139481 Method of treating a gas system |
06/09/2010 | CN101727102A Algae cultivation system control model and device based on 485 bus |
05/26/2010 | CN201482369U Air purifying device |
05/19/2010 | EP2185989A2 Method and device for continuously processing contaminated fluids |
05/18/2010 | US7718153 Catalytic process for control of NOx emissions using hydrogen |
05/12/2010 | CN201464930U Automatic detection and control device for pH value |
05/05/2010 | CN101072629B Single integrated humidity and ventilation control in an HVAC system |
05/05/2010 | CN101052926B Model predictive control of air pollution control processes |
04/28/2010 | EP2179076A1 Method and device for preventing corrosion in hot water systems |
04/28/2010 | CN201444261U Sulfur hexafluoride density controller |
04/27/2010 | US7704472 Air pollutant control system and method for removing mercury in flue gas |
04/14/2010 | CN101451440B Control method and control device for controlling auxiliary material and water addition to tailings |
03/30/2010 | CA2527380C Method and apparatus for formulating and controlling chemical concentrations in a gas mixture |
03/24/2010 | CN101681172A Fluid sampling system with an in-line probe |
03/24/2010 | CN101676220A Ozonated water flow and concentration control apparatus and method |
03/18/2010 | US20100068103 Control of pH in formaldehyde-free binder systems |
03/17/2010 | EP2162804A1 Process control software for the control of hydraulic retention time in a biological reactor |
03/11/2010 | WO2010025697A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present |
03/11/2010 | CA2734777A1 Interruption of measured variable analyses in an automatic water softening system when defined operating situations are present |
02/25/2010 | US20100044320 Chemical reactors |
02/09/2010 | CA2532079C Remote monitoring system for water supply network |
02/09/2010 | CA2524364C Controlling chemical dispense operations based on a conductivity offset |
02/04/2010 | US20100028202 Proactive control system for an industrial water system |
01/13/2010 | EP1875321B1 Flow control |
01/12/2010 | CA2373338C Method, device and use of said method for biological elimination of metal elements present in an ionized state in water |
01/07/2010 | WO2009071066A3 Method for operating a water softening system having two calibration characteristics and associated water softening system |
01/05/2010 | US7642306 for manufacturing glass fibers |
12/23/2009 | CN101611118A Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock |
12/22/2009 | US7635092 Humidity-controlled chamber for a thermogravimetric instrument |
12/16/2009 | EP2132611A1 Fluid sampling system with an in-line probe |
12/09/2009 | CN101598371A Air purifier |
12/09/2009 | CN100567665C Power generating plant recirculated water and urban tap water combined water supply system |
11/24/2009 | US7622037 Ozonated water flow and concentration control apparatus and method |
11/11/2009 | CN201345509Y SF* switch house environment intelligent monitoring system |
11/11/2009 | CN100558981C Paper machine control method and control device |
11/03/2009 | US7611684 Oxidative scrubbing of water insoluble, waste gases from semiconductor processing; oxidation-reduction potential probe measures the oxidation-reduction potential of the scrubbing fluid and adds the oxidizer as needed; a pH probe measures the acidic pH of the scrubbing fluid and adds a base as needed |
10/15/2009 | US20090259081 Method and system for reducing heating value of natural gas |
10/14/2009 | CN100549894C Ozonated water flow and concentration control apparatus and method |
09/16/2009 | EP2100202A2 Method and device for changing the ph of a solution |
09/16/2009 | EP2099880A2 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock |
09/03/2009 | WO2008057546A9 Advanced control of severe fluid catalytic cracking process for maximizing propylene production from petroleum feedstock |
08/26/2009 | CN100533322C Passive method of adjusting mixing ratio of liquids and its devices |
08/26/2009 | CN100533321C Controlling chemical dispense operations based on a conductivity offset |
08/26/2009 | CN100532624C Method adapting to batch quantity hot dipping zinc of rolled steel |
08/26/2009 | CN100532622C Comprehensive plating promoter treatment process and apparatus for hot galvanizing production line |