| |
 |
|
Class Information
Number: 210/111
Name: Liquid purification or separation > Flow, fluid pressure or material level, responsive > Discharge of treated material > Responsive to prefilt accumulation or filter clogging
Description: Apparatus responsive to liquid to be treated or to an increase in pressure upstream of a filter.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7410568 |
Sludge treatment |
Aug. 12, 2008 |
| 7204930 |
Water purification system and method |
Apr. 17, 2007 |
| 6998038 |
Stormwater treatment system |
Feb. 14, 2006 |
| 6797158 |
Method and apparatus for acoustically driven media filtration |
Sep. 28, 2004 |
| 6461507 |
Continuous squeeze-dewatering device |
Oct. 8, 2002 |
| 6270659 |
Fuel filtering system for an engine |
Aug. 7, 2001 |
| RE37165 |
Fuel filter assembly |
May. 8, 2001 |
| 6224754 |
Filter head and liquid filter assembly with valve arrangements |
May. 1, 2001 |
| 6120683 |
Filter with shut-off valve |
Sep. 19, 2000 |
| 6099739 |
Cleaning apparatus for a magnetic filter and cleaning method thereof |
Aug. 8, 2000 |
| 6039877 |
Device and method for preparing a treatment liquid by filtration |
Mar. 21, 2000 |
| 6024869 |
Spin-on filter assembly with valve arrangements |
Feb. 15, 2000 |
| 6003684 |
Device for dewatering solid-liquid suspensions |
Dec. 21, 1999 |
| 5879552 |
Method and apparatus for a self-purifying filter system |
Mar. 9, 1999 |
| 5876611 |
Intraoperative blood salvaging system and method |
Mar. 2, 1999 |
| 5833766 |
Method and conditioning system for regenerating replacement filters |
Nov. 10, 1998 |
| 5804072 |
Water filter with strainer scraping means |
Sep. 8, 1998 |
| 5766449 |
Fuel filter assembly |
Jun. 16, 1998 |
| 5672281 |
Fluid filtering apparatus and method |
Sep. 30, 1997 |
| 5670038 |
Liquid filter system |
Sep. 23, 1997 |
| 5591347 |
Single cell gas flotation separator with filter media |
Jan. 7, 1997 |
| 5575913 |
Filtration apparatus and method for removing particulate contaminants from commercial laundry waste water |
Nov. 19, 1996 |
| 5516434 |
Single cell gas flotation separator with filter media |
May. 14, 1996 |
| 5460715 |
Apparatus for filtering plasma |
Oct. 24, 1995 |
| 5417850 |
Band filter for removing foreign material particles from liquid baths |
May. 23, 1995 |
| 5401397 |
Filter system for a liquid stream with automatic rapid back flush capability |
Mar. 28, 1995 |
| 5401396 |
Self-cleaning stationary basket strainer |
Mar. 28, 1995 |
| 5389244 |
Pressure and vacuum filtration and washing device |
Feb. 14, 1995 |
| 5370791 |
Backwashable self-cleaning strainer |
Dec. 6, 1994 |
| 5269912 |
Precious metal recovery system |
Dec. 14, 1993 |
| 5160428 |
Continuous filter press |
Nov. 3, 1992 |
| 5149433 |
Method and apparatus for supply of decontaminated fuel to diesel engine |
Sep. 22, 1992 |
| 5147552 |
Method of and apparatus for cleaning filters in tangential microfiltration |
Sep. 15, 1992 |
| 5122264 |
Liquid fuel dispensing system including a filtration vessel within a sump |
Jun. 16, 1992 |
| 5118411 |
Filtration system for liquids with suspended particles |
Jun. 2, 1992 |
| 5112478 |
Fuel filter for preventing water and particulate contamination |
May. 12, 1992 |
| 5061366 |
Scraper filter system |
Oct. 29, 1991 |
| 5008007 |
Apparatus for filtering industrial process liquids |
Apr. 16, 1991 |
| 4929363 |
Method for filtering a fluid |
May. 29, 1990 |
| 4925550 |
Batch-action apparatus for filtering fluid medium |
May. 15, 1990 |
| 4897186 |
Fluid filter |
Jan. 30, 1990 |
| 4865724 |
Metal working machine liquid filtering device with coalescer, filter, and time delayer |
Sep. 12, 1989 |
| 4839047 |
Intermittent-action apparatus for filtering liquid |
Jun. 13, 1989 |
| 4832843 |
Apparatus for filtering fluid medium |
May. 23, 1989 |
| 4812230 |
Fluid filter |
Mar. 14, 1989 |
| 4761226 |
Continuously operable power actuated vacuum filter |
Aug. 2, 1988 |
| 4710288 |
Filtration system |
Dec. 1, 1987 |
| 4692253 |
Method and apparatus for removing extraneous matters |
Sep. 8, 1987 |
| 4681677 |
Water processor having automatic shutoff and bypass means |
Jul. 21, 1987 |
| 4661251 |
Filter unit with filter media arrangement for engagement with conveyor flights |
Apr. 28, 1987 |
|
|
|
