Patents
Sitemap › G05 - Controlling; Regulating › G05D - Systems for controlling or regulating non-electric variables › 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)
11/2000
11/23/2000WO2000009255A3 Parallel reactor with internal sensing and method of using same
11/15/2000EP1051672A1 Automatic command and control of cleansing baths by means of alkalinity regulation
11/14/2000US6146008 System for diluting ultrapure chemicals which is intended for the microelectronics industry
11/08/2000CN1272626A Two-loop intelligent pH value measuring and controlling device and its measuring and controlling method
11/07/2000US6144897 Control method for processes of synthesis of chemical products
10/2000
10/25/2000CN2403045Y High-efficiency insect prevention and killing automatic monitoring device
10/24/2000US6136184 Liquid chemical delivery system
10/18/2000EP0606456B2 Arrangement for continuously monitoring the no concentration in gas mixtures
10/17/2000US6132678 Sewage treatment apparatus
10/10/2000US6129832 Device and method for adjusting ion concentrations
10/05/2000WO2000020834A3 Multi-component process analysis and control
09/2000
09/20/2000CN1056544C Automatic water injector for wet mop cleaner and water injection method thereof
08/2000
08/23/2000EP1029112A1 Method of controlling a treatment line
08/22/2000US6106785 Batch polymerization process controller using inferential sensing to determine the integral reaction heat which in turn is used to indicate the degree of polymerization of the reaction mixture batch.
08/09/2000EP1025053A1 Performance-based control system
08/01/2000US6096221 process for the treatment of water by injection of ozone and carbon dioxide
07/2000
07/25/2000US6092430 Oxygen/carbon dioxide sensor and controller for a refrigerated controlled atmosphere shipping container
07/19/2000EP1019330A1 Method for controlling aeration systems of biological tanks treating waste water
07/06/2000WO2000039652A1 Performance-based control system
06/2000
06/29/2000WO2000038024A1 Apparatus and method for controlling distribution of product in manufacturing process
06/29/2000CA2354578A1 Apparatus and method for controlling distribution of product in manufacturing process
06/22/2000WO2000036183A1 Method of controlling a treatment line
06/22/2000CA2355100A1 Method of controlling a treatment line
06/21/2000DE19857799A1 Verfahren zum Steuern einer Behandlungslinie Method for controlling a treatment line
06/07/2000CN1255981A Fluid supply appts.
06/06/2000US6072576 On-line control of a chemical process plant
06/02/2000WO2000030980A1 Method for controlling the dosed quantities of water-treatment products
05/2000
05/31/2000DE19854432A1 Verfahren zur Kontrolle der Dosiermengen von Wasserbehandlungsprodukten Procedures for controlling the dosage amounts of water treatment products
05/30/2000US6068012 Performance-based control system
05/09/2000US6060319 Temperature stabilized fluid reference system
05/09/2000US6059194 Method to control thermal processes
05/02/2000US6055926 Liquid enzyme doser
04/2000
04/26/2000EP0995150A1 Polymerization process controller
04/13/2000WO2000020834A2 Multi-component process analysis and control
04/13/2000CA2346736A1 Multi-component process analysis and control
04/05/2000EP0712509B1 Virtual continuous emission monitoring system with sensor validation
03/2000
03/30/2000DE19844179A1 Fuzzy logic process measures free chlorine, redox potential and pH value to minimize the release of excess disinfectant agent
03/22/2000EP0987614A1 Apparatus and method for controlling output of an oxygen concentrator
02/2000
02/24/2000WO2000009780A1 Automatic regulation and control of cleansing baths
02/24/2000WO2000009255A2 Parallel reactor with internal sensing and method of using same
02/24/2000CA2369064A1 Automatic regulation and control of cleansing baths
02/23/2000CN1245570A On-line control of chemical process plant
02/22/2000US6029157 Method for determining state parameters of a chemical reactor with artificial neural networks
02/17/2000DE19836720A1 Automatic testing and control of cleaning baths, as used in metal processing, e.g. for cleaning metal pieces before anti-corrosion processes
02/15/2000US6024875 Method for controlling the oxygen content of the water at the outlet of a unit for dissolving oxygen in water, and unit for implementing the method
01/2000
01/05/2000EP0969342A1 Fluid supply apparatus
12/1999
12/23/1999WO1999065596A1 Fluid treatment apparatus
12/08/1999EP0859654B1 A method for adjusting a separation process and an apparatus for use of the method
11/1999
11/24/1999CN2350795Y Automatic air/fuel proportional mixing controller for double fuel vehicle
11/17/1999CN1046428C 化学反应器进料控制 Chemical reactor feed control
11/16/1999US5985108 Controlling apparatus for continuous electrolytic ion water producing apparatus
11/16/1999CA2092543C Hydrogels of heterocyclic polymer, method of containing them, and their use as insoluble ph-regulating pellets
11/11/1999DE19818771A1 Process to analyze, regulate and control a technical process
11/11/1999DE19802725C1 Automatische Kontrolle und Steuerung von Reinigerbädern durch Alkalitätsbestimmung Automatic control and monitoring of cleaning baths by alkalinity
11/09/1999US5980755 For controlling performance of fitler bed in liquid filtration system for efficient backwashing and filtration
11/04/1999DE19819875C1 Fuzzy logic process to regulate and control the ventilation of intermittently operated water treatment
11/02/1999US5976464 Installation for monitoring an atmosphere generation apparatus
10/1999
10/21/1999WO1999053121A1 Automated chemical process control system
10/14/1999WO1999051981A1 Method for automatically testing and controlling surface-active contents in aqueous solutions used in a process
10/14/1999DE19814500A1 Automatische Kontrolle und Steuerung des Tensidgehalts in wäßrigen Prozeßlösungen Automatic control and the surfactant in aqueous process solutions
10/14/1999CA2326775A1 Automatic monitoring and control of the surfactant content in aqueous process solutions
10/13/1999EP0948761A1 On-line control of a chemical process plant
09/1999
09/29/1999EP0861460B1 Device and process for adjusting ion concentrations
09/23/1999WO1999047229A1 Liquid chemical delivery system
09/16/1999DE19818691C1 Control of concentration and yield in reverse osmosis plant
09/10/1999WO1999045448A1 Integrated hazardous substance tracking and compliance
09/07/1999CA2167514C Apparatus and method for monitoring biological activity in wastewater and controlling the treatment thereof
08/1999
08/19/1999DE19806292A1 Treating industrial and communal sewage in batch plant
07/1999
07/29/1999WO1999038058A1 Automatic command and control of cleansing baths by means of alkalinity regulation
07/29/1999WO1999038057A1 Fluid supply apparatus
07/29/1999CA2319360A1 Automatic checking and regulation of cleaner baths by determination of alkalinity
07/28/1999EP0931766A2 Method and device for water treatment, especially for water jet cutting devices
07/20/1999CA2131689C Self-optimizing detergent controller
07/13/1999US5923571 Apparatus and method for automatic congruent control of multiple boilers sharing a common feedwater line and chemical feed point
07/07/1999EP0927278A1 Process and apparatus for controlling the efficiency of causticizing process
07/06/1999CA2161918C Chemical reactor feed control
05/1999
05/26/1999EP0917676A2 Apparatus and method for controlling output of an oxygen concentrator
05/20/1999WO1999024643A1 Method of measuring acid concentration, and automatic control method and apparatus
05/20/1999WO1999024140A1 Filter bed differential pressure monitoring system
05/20/1999DE19802224C1 Process and assembly to monitor and adjust the concentration of a known substance
04/1999
04/28/1999EP0712463B1 Virtual emissions monitor for automobile
04/28/1999CN1215181A Controller for driver's wine-drinking
04/15/1999WO1999018039A1 Apparatus and method for automatic congruent control of multiple boilers
04/15/1999WO1999018036A1 Method for controlling aeration systems of biological tanks treating waste water
04/08/1999DE19750880A1 Automatic unit testing water for presence of flocculating agents
04/06/1999US5891497 In-line/on demand reaction delivery method
03/1999
03/24/1999CN1211467A System for diluting ultrapure chemicals which is intended for microelectronics industry
03/17/1999EP0830394B1 Method for controlling chemical synthesis processes
03/11/1999WO1999011578A1 Performance-based control system
03/03/1999EP0899642A1 Apparatus for measuring, controlling and dosing
03/03/1999EP0899240A1 Process and device for water treatment by injecting ozone and carbon dioxide
02/1999
02/23/1999CA2084225C A procedure for regulating the quantity of a processing medium that is used to reduce the nitrogen monoxide content in the exhaust gases generated by combustion processes
02/20/1999CA2245236A1 Process and device for treating water through ozone and carbon dioxide injection
01/1999
01/21/1999DE19730573A1 Automatic control of carbonisation in production of potassium carbonate solution from potassium hydroxide solution
01/07/1999WO1999000717A1 Polymerization process controller
01/05/1999US5855791 Performance-based control system
12/1998
12/29/1998CA2164752C Chemical reactor feed control
12/02/1998EP0881555A1 Method for regulating the oxygen concentration of the water in the outlet of a device for dissolving oxygen in water and device for applying such a method
11/1998
11/29/1998CA2238800A1 Process for regulating the oxygen content of water exiting a device for dissolving oxygen in water and device for implementing the process
11/18/1998EP0877976A1 Self-optimizing detergent controller
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