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Class Information
Number: 210/740
Name: Liquid purification or separation > Processes > Including controlling process in response to a sensed condition > Density or specific gravity sensing
Description: Process in which the mass per unit volume (either actual or relative to that of water) is determined by the sensing means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7132579 |
Method of chlorine purification and process for producing 1,2-dichloroethane |
Nov. 7, 2006 |
| 7052599 |
Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors |
May. 30, 2006 |
| 6982032 |
Apparatus and method for biological treatment of environmental contaminants and waste |
Jan. 3, 2006 |
| 6951612 |
Blood centrifuge having overhanging disposable blood container |
Oct. 4, 2005 |
| 6902539 |
Extracorporeal blood processing methods and apparatus |
Jun. 7, 2005 |
| 6878280 |
Wastewater clarification methods and apparatus |
Apr. 12, 2005 |
| 6821441 |
Method for the purification of blood by means of hemodialysis and/or hemofiltration and apparatus for performing said method |
Nov. 23, 2004 |
| 6811706 |
Activated sludge process optimization |
Nov. 2, 2004 |
| 6793826 |
Method for recovering insoluble solids from a mixture |
Sep. 21, 2004 |
| 6790367 |
Method and apparatus for separating and measuring solids from multi-phase well fluids |
Sep. 14, 2004 |
| 6780322 |
Hemofiltration system |
Aug. 24, 2004 |
| 6682655 |
Concrete recovery system |
Jan. 27, 2004 |
| 6638433 |
System and method for controlling water-only cyclones |
Oct. 28, 2003 |
| 6565755 |
Sludge density measurement for controlling a sludge treatment stage |
May. 20, 2003 |
| 6322710 |
Slurry managing system and slurry managing method |
Nov. 27, 2001 |
| 6238572 |
Separation tank module for kitchen effluent |
May. 29, 2001 |
| 6203712 |
Process for separation by settling in a plurality of distinct zones |
Mar. 20, 2001 |
| 6120689 |
High purity water using triple pass reverse osmosis (TPRO) |
Sep. 19, 2000 |
| 6110382 |
Automated effluence conditioning and treatment |
Aug. 29, 2000 |
| 5958244 |
Cross-flow filtering process for separating fluid from a free-flowing medium and installation for implementing it |
Sep. 28, 1999 |
| 5902487 |
Process and apparatus for dewatering a suspension |
May. 11, 1999 |
| 5824228 |
Method and device for removal, within a closed reactor, of the phase of the lowest density from a biphase system with presence of interface |
Oct. 20, 1998 |
| 5620606 |
Method and apparatus for reacting oxidizable matter with particles |
Apr. 15, 1997 |
| 5545333 |
Method for preparing a material for high pressure deliquification |
Aug. 13, 1996 |
| 5529695 |
Apparatus and method for removing swarf and fines from cutting fluids |
Jun. 25, 1996 |
| 5462672 |
Process for treating sludge and system for the same |
Oct. 31, 1995 |
| 5395603 |
Automatic control system for a chemical process, especially a wet process phosphoric acid plant |
Mar. 7, 1995 |
| 5261791 |
Method and apparatus for recovering pollutants from an aquifer |
Nov. 16, 1993 |
| 5248442 |
Method and apparatus for measuring shade of hydrocyclone underflow |
Sep. 28, 1993 |
| 5094757 |
Radiator cooling system cleaner/refiner |
Mar. 10, 1992 |
| 5076890 |
Method for pulp quality control and regulation |
Dec. 31, 1991 |
| 5062964 |
Process for control of a flotation system |
Nov. 5, 1991 |
| 5013488 |
Apparatus for control of hard water scale in evaporative coolers |
May. 7, 1991 |
| 5002671 |
Hydro-cyclone with circulation outlet for boundary layer flow |
Mar. 26, 1991 |
| 4960513 |
Separator for liquids of different densities |
Oct. 2, 1990 |
| 4898679 |
Method and apparatus for obtaining ozone saturated water |
Feb. 6, 1990 |
| 4828716 |
Apparatus and method for separating phases of blood |
May. 9, 1989 |
| 4828717 |
Device and method for reducing volume of aqueous waste effluents |
May. 9, 1989 |
| 4818392 |
Liquid waste treatment system |
Apr. 4, 1989 |
| 4643834 |
Separation system using coalescing techniques |
Feb. 17, 1987 |
| 4514306 |
Method of and apparatus for controlling the quantity of filter aid fed to a sediment filter so as to maintain virtually constant a preselected optimum specific cake resistance |
Apr. 30, 1985 |
| 4439325 |
Pressurized filtration system |
Mar. 27, 1984 |
| 4336143 |
Controlling the treatment of mixtures comprising solid and liquid |
Jun. 22, 1982 |
| 4310421 |
Reuse of waste water in battery manufacture |
Jan. 12, 1982 |
| 4273658 |
Thickener control process |
Jun. 16, 1981 |
| 4226714 |
Thickener control system |
Oct. 7, 1980 |
| 4154677 |
Automatic control of a filter bed wash process |
May. 15, 1979 |
| 4138332 |
Method and device for dewatering solid suspensions |
Feb. 6, 1979 |
| 4113596 |
Method of measuring the mobility of colloids in an electrical field |
Sep. 12, 1978 |
| 4069033 |
Extraction of fertilizer salts and organic substances of high nutritive value from industrial waste waters |
Jan. 17, 1978 |
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