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Class Information
Number: 204/663
Name: Chemistry: electrical and wave energy > Apparatus > Apparatus for electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) > With programmed, cyclic, or time responsive control means
Description: Apparatus which is provided with control means for (a) storing coded instructions or other data which are used to regulate operation of the treating apparatus, (b) repetitively regulating a sequence of operational steps performed in or by the treating apparatus, or (c) causing various system operations to occur according to preset timing sequences or to last for predetermined durations of time (e.g., timer switches, etc.).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7351320 |
Multiple frequency electrostatic coalescence |
Apr. 1, 2008 |
| 6929740 |
Water purification system |
Aug. 16, 2005 |
| 6911132 |
Apparatus for manipulating droplets by electrowetting-based techniques |
Jun. 28, 2005 |
| 6860979 |
Dual frequency electrostatic coalescence |
Mar. 1, 2005 |
| 6821403 |
Method and device for cleaning and disinfecting treatment of water |
Nov. 23, 2004 |
| 6428689 |
Water purifying and dispensing apparatus, and method of purifying chlorine-containing water |
Aug. 6, 2002 |
| 6267933 |
Methods of preparing and using electrostatically treated fluids |
Jul. 31, 2001 |
| 6042701 |
Solar-powered direct current electrodialysis reversal system |
Mar. 28, 2000 |
| RE36402 |
Electrolytic cell assembly and process for production of bromine |
Nov. 23, 1999 |
| 5597479 |
Electro-coalescence/magnetic separation (ECMS) system and components for removal of contaminants from water streams, including desalinization |
Jan. 28, 1997 |
| 5437775 |
Method for preparing high-purity propylene carbonate and for simultaneously making passivated electrodes |
Aug. 1, 1995 |
| 5385658 |
Electric field controlled emulsion phase contactor |
Jan. 31, 1995 |
| 5384023 |
Solvent extraction method and apparatus for recovering analytes |
Jan. 24, 1995 |
| 5368724 |
Apparatus for treating a confined liquid by means of a pulse electrical discharge |
Nov. 29, 1994 |
| 5352343 |
Separation of the components of liquid dispersions |
Oct. 4, 1994 |
| 5338421 |
Method of and apparatus for separation by agglomeration |
Aug. 16, 1994 |
| 5326446 |
Treatment of water with static and radio frequency electromagnetic fields |
Jul. 5, 1994 |
| 5281330 |
Water purifier |
Jan. 25, 1994 |
| 5262027 |
Method of using an electric field controlled emulsion phase contactor |
Nov. 16, 1993 |
| 5230807 |
Electrical water treatment system with indicators displaying whether control limits are maintained |
Jul. 27, 1993 |
| 5122360 |
Method and apparatus for the production of metal oxide powder |
Jun. 16, 1992 |
| 4963268 |
Method and system for variable frequency electromagnetic water treatment |
Oct. 16, 1990 |
| 4961845 |
Apparatus and method for filtering particulate matter from dielectric fluids |
Oct. 9, 1990 |
| 4917785 |
Liquid processing system involving high-energy discharge |
Apr. 17, 1990 |
| 4507193 |
Mechanism for recovering and collecting extracted polar liquids |
Mar. 26, 1985 |
| 4417971 |
Circuit for maintaining the strength of an electrostatic field generated in a fluid mixture of varying dielectric strength |
Nov. 29, 1983 |
| 4056451 |
Dual field electric treater |
Nov. 1, 1977 |
| 4049535 |
Electrical treater with a.c-d.c. electrical fields |
Sep. 20, 1977 |
| 3981789 |
Apparatus for oil dewaxing |
Sep. 21, 1976 |
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