| Patents for G05D 21 - Control of chemical or physico-chemical variables, e.g. ph-value (1,435) |
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| 08/27/2002 | US6440374 Polymerization process controller |
| 08/20/2002 | US6436326 Averaging of the short term accuracy of a solids feeder by holding up several minutes worth of feed in a continuously stirred, backmixed vessel in combination with a liquid feed |
| 08/20/2002 | US6435203 Apparatus and method for regenerating etchant solution containing metal compound |
| 08/15/2002 | WO2002019049A3 Time-based proportional control |
| 08/15/2002 | US20020110624 Apparatus for producing a target pH in a foodstuff |
| 08/07/2002 | EP1185393A4 Multi-component process analysis and control |
| 07/31/2002 | EP1068525B1 Method for automatically testing and controlling surface-active contents in aqueous solutions used in a process |
| 07/25/2002 | WO2002057720A2 Method for regulating water concentration in a process stream |
| 07/25/2002 | CA2435326A1 Method for regulating water concentration in a process stream |
| 07/17/2002 | CN1359462A Biosensors for minitoring air conditioning and refrigeration processes |
| 07/03/2002 | EP1218165A1 Method for control of extrusion process |
| 06/26/2002 | CN1355738A Process and apparatus for preparing composition using slurry feed |
| 06/26/2002 | CN1355726A Process and apparatus for preparing composition for matter utilizing ultrasonic device |
| 06/19/2002 | CN1354547A Inner-cooling water ammonization fuzzy regulation and control method and its monitoring and control system |
| 06/19/2002 | CN1354546A Inner-cooling water microcirculation slowly-releasing regulation and control method and its monitoring system |
| 06/05/2002 | EP0829010B1 Method to monitor and control processes with on-line quartz crystal microbalance sensors |
| 06/05/2002 | EP0705431B1 Temperature stabilized fluid calibration system |
| 05/28/2002 | US6396280 Method and apparatus for measurement and automatic control of acid concentration |
| 05/22/2002 | EP1029112B1 Method of controlling a phosphating device |
| 05/21/2002 | US6392417 Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing |
| 05/08/2002 | EP1202817A1 Fermentation post-sterile additive delivery method and apparatus |
| 05/08/2002 | CN2490292Y Environmental protection anti-theft door |
| 04/30/2002 | US6379728 Mixing foods |
| 04/17/2002 | EP1196272A1 Process and apparatus for preparing a composition using a slurry feed |
| 04/17/2002 | EP1196239A1 Process and apparatus for preparing a composition of matter utilizing an ultrasonic device |
| 04/17/2002 | EP1051672B1 Automatic command and control of cleansing baths by means of alkalinity regulation |
| 04/16/2002 | US6371451 Scent diffusion apparatus and method |
| 04/10/2002 | EP1194822A1 Annular fluid manipulation in lined tubular systems to enhance component mechanical properties and flow integrity |
| 04/10/2002 | EP1194382A1 Method, device and use of said method for biological elimination of metal elements present in an ionized state in water |
| 04/04/2002 | US20020039781 Fermentation post-sterile additive delivery method and apparatus |
| 03/13/2002 | EP1185393A2 Multi-component process analysis and control |
| 03/12/2002 | CA2056369C System and method for monitoring substances and reactions |
| 03/07/2002 | WO2002019049A2 Time-based proportional control |
| 02/21/2002 | DE10039276A1 Color provision arrangement for vehicle, has mixing device with primary color containers linked to the corresponding dosing valves whose output ends are directed to an output container |
| 02/07/2002 | WO2002009852A2 System and process for removal of pollutants from a gas stream |
| 02/07/2002 | CA2456272A1 System and process for removal of pollutants from a gas stream |
| 01/16/2002 | CN1331814A Appts. and method for controlling distribution of product in mfg. process |
| 01/15/2002 | US6339727 Apparatus and method for controlling distribution of product in manufacturing process |
| 01/09/2002 | CN1330730A Method of controlling treatment line |
| 12/26/2001 | CN1328275A Method and device for automatically regulating pH valve |
| 12/12/2001 | CN1326013A Device and method for reproducing etching solution containing metal compounds |
| 12/06/2001 | WO2001091579A1 Apparatus and method for producing a target ph in a foodstuff |
| 11/29/2001 | US20010047221 Use of control matrix for boiler control |
| 11/14/2001 | EP0607384B1 Polarographic sensor |
| 11/13/2001 | US6315909 Use of control matrix for cooling water systems control |
| 11/08/2001 | WO2001084162A1 Use of control matrix for boiler control |
| 11/08/2001 | WO2001083384A1 Use of control matrix for cooling water systems control |
| 10/25/2001 | US20010034064 To prepare and screen combinatorial libraries in which one can monitor and control process conditions during synthesis and screening |
| 10/24/2001 | EP1147462A1 Performance-based control system |
| 10/23/2001 | US6306658 Parallel reactor with internal sensing |
| 10/10/2001 | EP1143039A2 Method of controlling a treatment line |
| 10/10/2001 | EP1142005A1 Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing |
| 10/10/2001 | EP1141802A1 Apparatus and method for controlling distribution of product in manufacturing process |
| 10/04/2001 | EP1137599A1 Method for controlling the dosed quantities of water-treatment products |
| 09/25/2001 | US6294764 Multi-component process analysis and control |
| 09/18/2001 | US6290850 Method for controlling aeration systems of biological tanks treating waste water |
| 09/12/2001 | CN1312866A Automatic regulation and control of cleansing baths |
| 08/29/2001 | EP0995150B1 Polymerization process controller |
| 08/28/2001 | US6282458 Methods and systems for controlling olfactory stimuli |
| 08/22/2001 | EP1059978A4 Filter bed differential pressure monitoring system |
| 07/31/2001 | US6267878 For treatment of water circulating in a conduit, which water carries microorganisms that must be eliminated and ions susceptible of leading to the formation of deposits on the internal wall of the conduit. |
| 07/24/2001 | CA2276624C On-line control of a chemical process plant |
| 07/12/2001 | WO2001049751A1 Process for the controlled production of polyethylene and its copolymers |
| 07/05/2001 | US20010006808 Fermentation post-sterile additive delivery method and apparatus |
| 06/27/2001 | EP1109950A1 Automatic regulation and control of cleansing baths |
| 06/20/2001 | EP0948761B1 On-line control of a chemical process plant |
| 05/29/2001 | US6238553 Buoyant water chlorinator with temperature, pH measurement and chlorine concentration displays |
| 05/23/2001 | CN1295864A Smell spreading device and method |
| 05/17/2001 | DE10016078A1 Duft-Zerstäubungsapparat und Verfahren Fragrance nebulizer and procedures |
| 05/16/2001 | CN1295666A Method for automatically testing and controlling surface-active contents in aqueous solutions used in a process |
| 05/10/2001 | WO2001006248A3 Biosensors for monitoring air conditioning and refrigeration processes |
| 05/03/2001 | WO2001030404A1 Scent diffusion apparatus and method thereof |
| 04/17/2001 | CA2003577C Method and apparatus for regulating transmembrane ion movement |
| 04/12/2001 | WO2001024991A1 Method for control of extrusion process |
| 04/11/2001 | CN1291303A Integrated hazardous substance tracking and compliance |
| 03/27/2001 | CA2153890C Temperature stabilized fluid calibration system |
| 03/22/2001 | WO2001020653A1 Arrangement and method for detecting the end of life of an aqueous bath utilized in semiconductor processing |
| 03/21/2001 | CN2424466Y One-chip microcomputer pH on-line detecting and alarming instrument |
| 03/21/2001 | CN2424464Y Double-loop intelligent pH value measuring and controlling device |
| 03/21/2001 | CN1288536A Automatic command and control of cleansing baths by means of alkalinity |
| 02/28/2001 | CN1285324A Automatic controller for sewage treatment process |
| 02/08/2001 | WO2001008811A1 Fermentation post-sterile additive delivery method and apparatus |
| 02/08/2001 | CA2376515A1 Fermentation post-sterile additive delivery method and apparatus |
| 01/30/2001 | US6178995 Fluid supply apparatus |
| 01/25/2001 | WO2001006248A2 Biosensors for monitoring air conditioning and refrigeration processes |
| 01/24/2001 | EP1069942A1 Parallel reactor with internal sensing and method of using same |
| 01/17/2001 | EP1068525A1 Method for automatically testing and controlling surface-active contents in aqueous solutions used in a process |
| 01/17/2001 | EP1068373A1 Automated chemical process control system |
| 01/17/2001 | CN1280633A Method of measuring acid concentration, and automatic control method and apparatus |
| 01/03/2001 | CN1060131C Controllable atmosphere system for cold-storage containers |
| 12/21/2000 | WO2000077587A1 Annular fluid manipulation in lined tubular systems to enhance component mechanical properties and flow integrity |
| 12/21/2000 | WO2000076737A1 Process and apparatus for preparing a composition using a continuous reactor and mixer in series |
| 12/21/2000 | WO2000076736A1 Process and apparatus for preparing a composition using a slurry feed |
| 12/21/2000 | WO2000076656A1 Process and apparatus for preparing a composition of matter utilizing an ultrasonic device |
| 12/21/2000 | CA2374889A1 Process and apparatus for preparing a composition using a slurry feed |
| 12/21/2000 | CA2374324A1 Process and apparatus for preparing a composition of matter utilizing an ultrasonic device |
| 12/20/2000 | EP1059978A1 Filter bed differential pressure monitoring system |
| 12/13/2000 | EP1058869A1 Integrated hazardous substance tracking and compliance |
| 12/12/2000 | US6159384 A differential pressure monitor for measuring the differential pressure across a filter bed so as to monitor a filter bed and achieve efficient control of filtration and backwashing |
| 11/23/2000 | WO2000069779A1 Method, device and use of said method for biological elimination of metal elements present in an ionized state in water |