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Class Information
Number: 210/281
Name: Liquid purification or separation > Particulate material type separator, e.g., ion exchange or sand bed > With rehabilitation means > With access opening to normally closed casing
Description: Apparatus wherein a closed casing which holds particulate material is provided with an opening through which the separatory material may be reached, or through which solid regenerating material may be inserted.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7566398 |
Water filtering device |
Jul. 28, 2009 |
| 7306726 |
Method for treating metal-working fluid |
Dec. 11, 2007 |
| 6921477 |
Groundwater treatment system and method |
Jul. 26, 2005 |
| 6719899 |
Access valve devices, their use in separation apparatus, and corresponding methods |
Apr. 13, 2004 |
| 6524484 |
Access valve devices, their use in separation apparatus, and corresponding methods |
Feb. 25, 2003 |
| 6277283 |
Access valve devices, their use in separation apparatus, and corresponding methods |
Aug. 21, 2001 |
| 6123849 |
Chromatographic column and valve |
Sep. 26, 2000 |
| 6090279 |
Access valve devices, their use in separation apparatus, and corresponding methods |
Jul. 18, 2000 |
| 5902485 |
Access valve devices, their use in separation apparatus and corresponding methods |
May. 11, 1999 |
| 5534133 |
Continuous method for increasing the Q. I. concentration of liquid tar while concurrently producing a Q. I. free tar |
Jul. 9, 1996 |
| 5294337 |
Water filtration system |
Mar. 15, 1994 |
| 5032261 |
Compact biofilter for drinking water treatment |
Jul. 16, 1991 |
| 4983286 |
Sterilizing water-purifying reagent for drink |
Jan. 8, 1991 |
| 4413813 |
Disposable bed filter apparatus |
Nov. 8, 1983 |
| 4211655 |
Upflow filter construction |
Jul. 8, 1980 |
| 4178249 |
Modular container |
Dec. 11, 1979 |
| 4172796 |
Water purifier apparatus |
Oct. 30, 1979 |
| RE29996 |
Upflow filter |
May. 15, 1979 |
| 4009102 |
Containerized water refiner exchange system |
Feb. 22, 1977 |
| 3951811 |
Modular container |
Apr. 20, 1976 |
| 3950252 |
Upflow filter |
Apr. 13, 1976 |
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