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Class Information
Number: 210/170
Name: Liquid purification or separation > Structural installation > Geographic (e.g., drainage ditch, septic, pond)
Description: Apparatus in which a separator is part of a system installed in the ground or related to a particular geographic feature, as a lake.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4741825 |
Mobile vortex shield |
May. 3, 1988 |
| 4724086 |
Apparatus and method for conditioning stratified water bodies |
Feb. 9, 1988 |
| 4722800 |
Oil-water separator |
Feb. 2, 1988 |
| 4721408 |
Water distribution system |
Jan. 26, 1988 |
| 4717473 |
Apparatus for time-averaged or composite sampling of chemicals in ground water |
Jan. 5, 1988 |
| 4713172 |
Apparatus for improved aeration of liquids |
Dec. 15, 1987 |
| 4713179 |
Removable culvert grate |
Dec. 15, 1987 |
| 4704048 |
Subterranean drainage |
Nov. 3, 1987 |
| 4702830 |
Water aeration apparatus |
Oct. 27, 1987 |
| 4698969 |
Wave power converter |
Oct. 13, 1987 |
| 4696599 |
Secure landfill and method of operating a landfill for hazardous waste |
Sep. 29, 1987 |
| 4692249 |
Flotation process for sludge recovery and energy conversion |
Sep. 8, 1987 |
| 4690756 |
Apparatus for microaquaculture and pollution control |
Sep. 1, 1987 |
| 4689145 |
Dry well filtration system |
Aug. 25, 1987 |
| 4687372 |
Toxic waste drain system and method |
Aug. 18, 1987 |
| 4678582 |
Treatment system for landfill leachate |
Jul. 7, 1987 |
| 4671351 |
Fluid treatment apparatus and heat exchanger |
Jun. 9, 1987 |
| 4670148 |
Apparatus and method for withdrawing gaseous decomposition products from a refuse dump |
Jun. 2, 1987 |
| 4668388 |
High rate sludge reactor |
May. 26, 1987 |
| 4664792 |
Plant for treatment of urban runoff water |
May. 12, 1987 |
| 4662778 |
Drainage mat |
May. 5, 1987 |
| 4663037 |
Apparatus for recovery of liquid hydrocarbons from groundwater |
May. 5, 1987 |
| 4657675 |
Solar water conditioning apparatus for fishpond |
Apr. 14, 1987 |
| 4654147 |
Automated system for continuous monitoring and control of the amount of dissolved oxygen in a plurality of marine life farming pools or sewage treatment installations |
Mar. 31, 1987 |
| 4651824 |
Controlled placement of underground fluids |
Mar. 24, 1987 |
| 4652378 |
Method of and apparatus for reduction of turbidity in a body of fluid |
Mar. 24, 1987 |
| 4645594 |
Converter for biodegradable material |
Feb. 24, 1987 |
| 4642195 |
Screening system including a screen cleaning means for and a method of cleaning a screen in a waste water purification plant |
Feb. 10, 1987 |
| 4639165 |
Drainage tube |
Jan. 27, 1987 |
| 4637462 |
Liquid mud ring control of underground liquids |
Jan. 20, 1987 |
| 4623452 |
Dockside system for the collection and disposal of bilge water and waste oil |
Nov. 18, 1986 |
| 4622138 |
Vertical drain |
Nov. 11, 1986 |
| 4622139 |
Aerator device |
Nov. 11, 1986 |
| 4619762 |
Devices for recovering polymetal compounds discharged from a submarine hydrothermal source |
Oct. 28, 1986 |
| 4618421 |
Fluid transport and processing system |
Oct. 21, 1986 |
| 4614458 |
Permanent dredge system |
Sep. 30, 1986 |
| 4611950 |
Method and apparatus for removing contaminants from soil |
Sep. 16, 1986 |
| 4608126 |
Retorting system and disposal site |
Aug. 26, 1986 |
| 4608157 |
Wastewater treatment plant |
Aug. 26, 1986 |
| 4608163 |
Apparatus for purification of contaminated groundwater |
Aug. 26, 1986 |
| 4605497 |
Device for processing fluid with solid bodies |
Aug. 12, 1986 |
| 4605501 |
Flow divider for distribution systems |
Aug. 12, 1986 |
| 4600508 |
Contamination removal system |
Jul. 15, 1986 |
| 4594153 |
Sewage pumping station |
Jun. 10, 1986 |
| 4594164 |
Method and apparatus for conducting chemical reactions at supercritical conditions |
Jun. 10, 1986 |
| 4592846 |
Method and reservoir for in-ground containment of liquid waste |
Jun. 3, 1986 |
| 4590994 |
Heat exchanger tube strainer |
May. 27, 1986 |
| 4588325 |
Modular rock replacing drain field apparatus |
May. 13, 1986 |
| 4584102 |
Process for the biological degradation of hazardous waste by-products |
Apr. 22, 1986 |
| 4582609 |
Filtration device and method |
Apr. 15, 1986 |
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