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Class Information
Number: 210/140
Name: Liquid purification or separation > With time control > Of additional fluid > Preparation for treating operation
Description: Apparatus in which the additional fluid serves to prepare the treating means for a treating operation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7204930 |
Water purification system and method |
Apr. 17, 2007 |
| 7045057 |
Preparation of homogeneously loaded ion exchangers |
May. 16, 2006 |
| 6596159 |
Automatic regeneration valve for water softener |
Jul. 22, 2003 |
| 6468421 |
Bag filter wash-down system with vacuum break pulse |
Oct. 22, 2002 |
| 6444127 |
Water conditioning unit control valve |
Sep. 3, 2002 |
| 6402944 |
Water softener control valve with removable seal stack |
Jun. 11, 2002 |
| 6235200 |
Method and apparatus for controlling recharging of water conditioning apparatus |
May. 22, 2001 |
| 6036866 |
Apparatus and method for fluid treatment units connected in parallel |
Mar. 14, 2000 |
| 5910244 |
Adaptable control valve for fluid treatment system |
Jun. 8, 1999 |
| 5908549 |
Filtration and regeneration system |
Jun. 1, 1999 |
| 5879559 |
Valve controller for water conditioning system |
Mar. 9, 1999 |
| 5873996 |
Community drinking water purification system |
Feb. 23, 1999 |
| 5792342 |
Apparatus for coordinating chemical treatment of sewage |
Aug. 11, 1998 |
| 5589058 |
Apparatus for treatment of water |
Dec. 31, 1996 |
| 5556535 |
Filtration system for recycling water used in a car wash |
Sep. 17, 1996 |
| 5544072 |
Method for regeneration of a water softener |
Aug. 6, 1996 |
| 5538640 |
Pervaporation apparatus and process |
Jul. 23, 1996 |
| 5538640 |
Pervaporation apparatus and process |
Jul. 23, 1996 |
| 5480555 |
Control system for a water softener, control device therefor and methods of making the same |
Jan. 2, 1996 |
| 5451314 |
Plant for the treatment of drinking water from raw water |
Sep. 19, 1995 |
| 5320747 |
Apparatus for removing solid matter from fluid systems |
Jun. 14, 1994 |
| 5273070 |
Water treatment apparatus |
Dec. 28, 1993 |
| 5256371 |
Method and arrangement for disinfecting a dialysis fluid circuit |
Oct. 26, 1993 |
| 5234601 |
Apparatus and method for controlling regeneration of a water treatment system |
Aug. 10, 1993 |
| 5202016 |
Streaming current detector with head-creating passageway and fluid treatment system using same |
Apr. 13, 1993 |
| 5176836 |
Regenerable biocide delivery unit |
Jan. 5, 1993 |
| 5139655 |
Integrated system marine sanitation device |
Aug. 18, 1992 |
| 5089140 |
Comprehensive water treatment system |
Feb. 18, 1992 |
| 5073255 |
Water treatment apparatus |
Dec. 17, 1991 |
| 5069796 |
System for removing volatile components from water derived from wells |
Dec. 3, 1991 |
| 5064529 |
Apparatus for testing membrane filters |
Nov. 12, 1991 |
| 5061372 |
Water treatment system with preservice rinse |
Oct. 29, 1991 |
| 5045187 |
Regeneration system for water conditioners such as water softeners |
Sep. 3, 1991 |
| 4970003 |
Water softening process with preservice rinse |
Nov. 13, 1990 |
| 4925551 |
Portable water purification system including electronic memory panel assembly |
May. 15, 1990 |
| 4917794 |
Regeneration sensing device |
Apr. 17, 1990 |
| 4883589 |
System for removing contaminants from ground water |
Nov. 28, 1989 |
| 4872974 |
Apparatus for testing membrane filters, and for sterilizing liquids with use of membrane filter |
Oct. 10, 1989 |
| 4865724 |
Metal working machine liquid filtering device with coalescer, filter, and time delayer |
Sep. 12, 1989 |
| 4789467 |
Automated disinfection system |
Dec. 6, 1988 |
| 4764280 |
Water softening apparatus |
Aug. 16, 1988 |
| 4699714 |
Ion exchange apparatus |
Oct. 13, 1987 |
| 4675115 |
Method and device for removing hydrogen sulfide from well water with in situ adsorbent regeneration |
Jun. 23, 1987 |
| 4668402 |
System for treating fluids |
May. 26, 1987 |
| 4634523 |
Fluid supply device with periodically positive and reverse flow cleaning cycle |
Jan. 6, 1987 |
| 4596549 |
Blood dialyzing method and apparatus |
Jun. 24, 1986 |
| 4560472 |
Peritoneal dialysis apparatus |
Dec. 24, 1985 |
| 4550011 |
Sample flow cell for automatic halogen and pH control for water reservoirs |
Oct. 29, 1985 |
| 4536845 |
Self-programmable controller for water conditioner recharging |
Aug. 20, 1985 |
| 4517081 |
Dialyzer reuse machine |
May. 14, 1985 |
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