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Class Information
Number: 210/311
Name: Liquid purification or separation > Diverse distinct separators > Including a filter > Including constituent trapping feature > Downflow inlet, upflow through filter medium
Description: Apparatus in which entering liquid flows downwardly and then passes through the filter medium in an upward direction.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7534344 |
Upflow filtration and method apparatus for stormwater treatment |
May. 19, 2009 |
| 7470361 |
System for stormwater environmental control |
Dec. 30, 2008 |
| 7468129 |
Oil-water separator |
Dec. 23, 2008 |
| 7291262 |
Road surface waste water treatment device and tubular water treatment unit |
Nov. 6, 2007 |
| 7141167 |
Filter device |
Nov. 28, 2006 |
| 7120949 |
Multi-purpose drain |
Oct. 17, 2006 |
| 7005060 |
Upflow surface water runoff filtration system |
Feb. 28, 2006 |
| 6974537 |
Diesel fuel purifier |
Dec. 13, 2005 |
| 6860991 |
Drain trap clean-out system |
Mar. 1, 2005 |
| 6835306 |
Return-side filter for use in a vehicle transmission |
Dec. 28, 2004 |
| 6733664 |
Filtration device for separation of concretions, fragments or other body material from liquids |
May. 11, 2004 |
| 6540926 |
Filter assembly |
Apr. 1, 2003 |
| 6500338 |
Fuel filter and dryer |
Dec. 31, 2002 |
| 6203698 |
Filter assembly |
Mar. 20, 2001 |
| 6183633 |
Separator |
Feb. 6, 2001 |
| 6143173 |
Removable drain filter |
Nov. 7, 2000 |
| 6083391 |
Dental separator |
Jul. 4, 2000 |
| 5916442 |
Filter assembly |
Jun. 29, 1999 |
| 5776332 |
Fuel system with sight-glass |
Jul. 7, 1998 |
| 5762790 |
Septic tank filtering system |
Jun. 9, 1998 |
| 5599460 |
Water/glycol sensor for use in oil systems |
Feb. 4, 1997 |
| 5248420 |
Apparatus for dewatering slag sand |
Sep. 28, 1993 |
| 5240593 |
Apparatus for the purification of fluids |
Aug. 31, 1993 |
| 5238117 |
Mineral processing screen separator |
Aug. 24, 1993 |
| 5221470 |
Apparatus for treating waste water |
Jun. 22, 1993 |
| 5147544 |
Blood filter in medical devices |
Sep. 15, 1992 |
| 5049266 |
Device and method for microbiological water treatment |
Sep. 17, 1991 |
| 4995992 |
Apparatus for heating and demoisturizing diesel fuel |
Feb. 26, 1991 |
| 4931183 |
Process and apparatus for the biological purification of water |
Jun. 5, 1990 |
| 4929349 |
Bio-filtration apparatus and method for wastewater treatment |
May. 29, 1990 |
| 4925552 |
Arrangement for water purification |
May. 15, 1990 |
| 4867877 |
Waste disposal/separation system |
Sep. 19, 1989 |
| 4816149 |
Portable water filtration system |
Mar. 28, 1989 |
| 4780203 |
Liquid separators |
Oct. 25, 1988 |
| 4739210 |
Method and a device for generating heat energy and oscillation energy |
Apr. 19, 1988 |
| 4700412 |
Universal trap |
Oct. 20, 1987 |
| 4692246 |
Cartridge filter with plural medias |
Sep. 8, 1987 |
| 4624779 |
Fuel treatment apparatus |
Nov. 25, 1986 |
| 4623455 |
Method and device for filtering lubricating oil for a dough divider machine |
Nov. 18, 1986 |
| 4502954 |
Combination fuel filter and water separator |
Mar. 5, 1985 |
| 4500425 |
Pump valve for liquid separator |
Feb. 19, 1985 |
| 4389310 |
Cold trap |
Jun. 21, 1983 |
| 4388187 |
Fuel filter |
Jun. 14, 1983 |
| 4385891 |
Dental apparatus for preventing loss of precious metal particles |
May. 31, 1983 |
| 4340474 |
Converging flow filter |
Jul. 20, 1982 |
| 4333835 |
Vertical tube liquid pollutant separators |
Jun. 8, 1982 |
| 4257890 |
Fuel-water separator |
Mar. 24, 1981 |
| 4250037 |
Plumbing fixture with integral strainer |
Feb. 10, 1981 |
| 4230582 |
Drain traps with strainer means |
Oct. 28, 1980 |
| 4218311 |
Solvent extractor |
Aug. 19, 1980 |
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