E03B3/18 - CPC Classification Index

ClassID:

129159 ⎘

E03B3/18 - CPC Classification

Classification description:

Methods or installations for obtaining or collecting drinking water or tap water from underground; Obtaining and confining water by means of wells; Component parts of wells Well filters

Sub-classes:

E03B3/20 » of elements of special shape 5
E03B3/24 » formed of loose materials, e.g. gravel 3

Recent Application in this class:

20220213670

2022-07-07

Method for mitigating seawater intrusion by using seawater injection

20210229003

2021-07-29

Underdrain assembly and method of manufacturing same

20200246728

2020-08-06

Underdrain assembly and method of manufacturing same

20190217224

2019-07-18

Underdrain assembly and method of manufacturing same

20180214796

2018-08-02

Underdrain assembly and method of manufacturing same

20170232488

2017-08-17

Groundwater remediation systems, devices, and methods

20160193550

2016-07-07

Underdrain assembly and method of manufacturing the same

20140356066

2014-12-04

Underdrain assembly and method of manufacturing the same

20120217005

2012-08-30

METHOD AND APPARATUS FOR REDUCING LINER SLOT PLUGGING TENDENCIES

#10

20120097387

2012-04-26

Apparatus for activating or cleaning filter tube wells

#11

20110240548

2011-10-06

SCREEN JOINT

#12

20100018697

2010-01-28

Securement of lines to well sand control screens

#13

20060157256

2006-07-20

Unsintered mesh sand control screen

#14

20050082060

2005-04-21

Well screen primary tube gravel pack method

#15

17559138

2023-11-14

Multipurpose devices and methods for sealing, measuring, and surging fluids in casings