G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value

Patents for G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value (1,435)
11/2007
11/20/2007	CA2305488C Method for controlling aeration systems of biological tanks treating waste water
11/14/2007	CN200974864Y Plating-aided liquid integrated processing unit for heat zinc coating production line
11/14/2007	CN101072629A Single integrated humidity and ventilation control in an hvac system
11/08/2007	WO2007125191A1 Lithium ion-selective membrane
11/08/2007	CA2649803A1 Lithium ion-selective membrane
11/07/2007	CN200971869Y Energy-saving circulation water purification pump with built-in motor
11/01/2007	WO2007123817A1 A method and apparatus for fuzzy logic control enhancing advanced process control performance
10/2007
10/31/2007	EP1649278B1 Remote contamination monitoring system for water supply network
10/30/2007	US7288229 To prepare and screen combinatorial libraries in which one can monitor and control process conditions during synthesis and screening
10/25/2007	US20070250300 Method for Controlling a Microbiological Process on the Basis of Successive Temporal Derivatives of State Variables
10/16/2007	CA2305489C Method for controlling and managing the biomass store of biological installations treating waste water
10/10/2007	CN101052926A Model predictive control of air pollution control processes
10/03/2007	CN101048710A Cascaded control of an average value of a process parameter to a desired value
10/03/2007	CN101048709A 最优化空气污染控制 Optimized air pollution control
09/2007
09/04/2007	US7264006 Ozonated water flow and concentration control apparatus and method
08/2007
08/15/2007	EP1709502B1 Controlling biocide addition to process liquids
08/15/2007	CA2578751A1 Reservoir management system
07/2007
07/25/2007	CN2927144Y pH-value automatic controlling system
07/18/2007	CN1327306C Online optimized method for blending oil products, and system of implementing the method
07/04/2007	EP1804150A1 Microfluidic device for electrochemically regulating pH of fluid and method of regulating pH of fluid using the microfluidic device
07/03/2007	CA2292601C Polymerization process controller
06/2007
06/14/2007	WO2007036653A8 Method for making a food or biotechnological product using redox potential regulation
06/06/2007	CN1974834A Comprehensive plating promoter treatment process and apparatus for hot galvanizing production line
05/2007
05/31/2007	WO2007061306A1 Control system, and a sensor and actuator to be used in this control system
05/30/2007	EP1789855A2 System for maintaining hydrogen purity in electrical generators and method thereof
05/16/2007	CN1962473A Full-automatic intelligent control on-line drug-feeding security system
05/15/2007	CA2289616C Method and device for producing a controlled atmosphere with low oxygen partial pressure
05/09/2007	EP1782136A1 Cascaded control of an average value of a process parameter to a desired value
05/09/2007	EP1782135A1 Model predictive control of air pollution control processes
05/09/2007	EP1782134A1 Optimized air pollution control
05/09/2007	CN2898899Y Antimony/glass double-electrode industrial pH-value measurement controlling system
05/08/2007	US7214537 Process control; monitoring concentration of hydrogen peroxide, hydroxylamine
05/02/2007	EP1570010B1 Coating of surfaces entering into contact with a liquid in order to prevent biological vegetation
05/02/2007	CN1313895C Method and system for controlling coagulant filling rate by on-line measuring flocculate sedimentation speed
05/01/2007	CA2309275C Filter bed differential pressure monitoring system
05/01/2007	CA2221032C Method for preparing blend products
04/2007
04/19/2007	WO2006026060A8 Cascaded control of an average value of a process parameter to a desired value
04/05/2007	WO2007036653A1 Method for making a food or biotechnological product using redox potential regulation
04/03/2007	CA2150783C Process for continuously controlling the heat content of a partial oxidation unit feed-gas stream
03/2007
03/29/2007	WO2007034304A1 Point-of-use process control blender systems and corresponding methods
03/27/2007	US7195178 Cooling ceiling
03/20/2007	US7194342 Navigational instrument, method and computer program product for displaying ground traffic information
03/14/2007	CN2879262Y Fine-bad water separator
02/2007
02/28/2007	CN2874576Y Automatic control system for fixing oxygen and adding aluminium
02/27/2007	US7184884 Navigation device, information supplying server and information service system using the same
02/27/2007	US7182268 Method of controlling the absolute humidity of air stream in kilning step and kilning apparatus
02/14/2007	EP1751629A1 Method for controlling a microbiological process on the basis of successive temporal derivatives of state variables
02/14/2007	EP1147462B1 Performance-based control system
02/14/2007	CN2869957Y Material gas-phase-concentration regulation control instrument
02/07/2007	EP1748707A2 Adaptive membrane structure
01/2007
01/31/2007	EP1748340A2 A microfluidic device and a method for electrically regulating the pH of a fluid
01/25/2007	WO2007009945A1 Method for controlling foaming in a process
01/17/2007	EP1744233A1 Regeneration apparatus and regeneration method for electroless plating
01/09/2007	US7161678 Systems and methods for determining the existence of a visible plume from the chimney of a facility burning carbon-based fuels
01/09/2007	CA2202361C Fluid treatment system
12/2006
12/14/2006	US20060281184 Active pulse monitoring in a chemical reactor
12/13/2006	CN1877479A Wiper unit controller and method for controlling wiper unit
12/06/2006	CN2844993Y Automatic controller for regulating yield of hydrogen generation
11/2006
11/29/2006	EP1727014A2 Performance-based control system
11/29/2006	EP1726361A2 Service initiation and regeneration control using impedance ratios
11/09/2006	WO2006117518A1 Flow control
11/01/2006	CN1854342A Method for controlling concentration of peroxide and copper in microetching liquid and its circulative usage
10/2006
10/26/2006	US20060241874 Monitoring system
10/25/2006	CN2831202Y Automatic air intercharger
10/19/2006	WO2006093562A3 Secure meter
10/18/2006	CN2828888Y Sulfur hexafluoride density controller with telemetering function
10/18/2006	CN1847618A Enclosing array controller for preventing coal mine gas from explosion
10/11/2006	EP1709502A1 Controlling biocide addition to process liquids
09/2006
09/27/2006	CN1838016A Apparatus and method for online monitoring pH value in MES production
09/21/2006	WO2005072269A3 Single integrated humidity and ventilation control in an hvac system
09/21/2006	US20060211129 Real-time component monitoring and replenishment system for multicomponent fluids
09/20/2006	CN1834827A Intelligent controller of water purifier with filter core arrangement
09/20/2006	CN1834209A Median automatic selection control method of powdered coal pressuring gasified oxygen stream
09/19/2006	US7110861 Diluting system and method
09/12/2006	US7105095 Method and apparatus for controlling concentration of water treatment chemicals
09/08/2006	WO2006093562A2 Secure meter
09/06/2006	EP1459139B1 Method for guaranteeing at least one characteristic of a fluid used for producing food products
08/2006
08/30/2006	CN2812068Y Real-time oxygen regulator for electric furnace
08/23/2006	CN2809693Y Special-purpose switch for full-automatic intelligent exhaust fan
08/16/2006	CN1270219C Self-adaptive control administration apparatus and process thereof
08/02/2006	EP1685275A2 Method of inhibiting corrosion in hot water systems
07/2006
07/04/2006	US7072742 Accurate blending module and method
06/2006
06/28/2006	CN1795423A Controlling chemical dispense operations based on a conductivity offset
06/21/2006	EP1672459A2 Method of controlling pH of electrolyzed solution using microfluidic device including electrolysis device
06/15/2006	US20060128022 Process control method and process control system
06/14/2006	CN2788239Y Mine-used intelligent gas control system
06/08/2006	US20060121616 Method and system for increasing efficiency of FGD operation in fossil fuel boilers
06/06/2006	CA2143516C Water quality monitor for a water purification system
06/01/2006	US20060113242 Wastewater treatment control system, terminal, computer program and accounting method
05/2006
05/31/2006	CN1778714A Adjusting method for A/O biological denitrification reactor and nitrification process, its on-line fuzzy controller and control thereof
05/25/2006	US20060108292 Wastewater treatment control system, terminal, computer program and accounting method
05/25/2006	US20060107969 Ozonated water flow and concentration control apparatus and method
05/24/2006	CN1776558A Method for realizing liquid ratio control
05/24/2006	CN1257112C Method for regulating effluent or sludge treating plant
05/23/2006	US7048435 Humidity-controlled chamber for a thermogravimetric instrument
05/11/2006	US20060100743 Automated non-invasive real-time acute renal failure detection system
05/11/2006	US20060099110 for treating flue gas
04/2006
04/26/2006	EP1649278A2 Remote contamination monitoring system for water supply network
04/26/2006	CN2775719Y CO warning controller
04/25/2006	US7033548 Denitrification, desulfurization; pollution control

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