C02F3/226 - CPC Classification Index

ClassID:

86376 ⎘

C02F3/226 - CPC Classification

Classification description:

Biological treatment of water, waste water, or sewage; Aerobic processes; Activated sludge processes using circulation pipes "Deep shaft" processes

Recent Application in this class:

20140042085

2014-02-13

Systems and methods for waste treatment

20120308349

2012-12-06

Sewage silo with centripetal action discharge arm

20110096618

2011-04-28

METHOD AND APPARATUS FOR AERATION

20090050549

2009-02-26

Microporous diffusion apparatus

20080283469

2008-11-20

Methods And Apparatus For Biological Treatment of Waste Waters

20080251439

2008-10-16

Methods and Apparatus For Biological Treatment of Waste Waters

20080110836

2008-05-15

Liquid aeration system and method

20070151908

2007-07-05

Vertical well for fluid circulation

20070023361

2007-02-01

Microporous diffusion apparatus

#10

20060249453

2006-11-09

Method for biologically purifying waste water

#11

20060243664

2006-11-02

Methods for biological treatment of waste waters

#12

20060157874

2006-07-20

Liquid aeration system and method

#13

20050218074

2005-10-06

Method and apparatus providing improved throughput and operating life of submerged membranes

#14

20050115880

2005-06-02

Apparatus for biological treatment of waste waters

#15

20050092691

2005-05-05

Gas-gas-water treatment system for groundwater and soil remediation