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IPC Subgroup
E03B 3/08

Obtaining and confining water by means of wells

Introduced: September 1968

Last revised: January 2006

Full Title

Methods or installations for obtaining or collecting drinking water or tap water > from underground > Obtaining and confining water by means of wells

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
WATER SUPPLY; SEWERAGE
Subclass:
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER

Related Keywords

obtaining water from WELL(S)

5 direct subcodes

Child Classifications

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  • E03B 3/12 by means of vertical pipe wells
  • E03B 3/14 by means of horizontal or oblique wells
  • E03B 3/15 Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers

Top Applicants

Top 10 applicants by patent filingsfor class E03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TOTO 2,957
  2. LIXIL CORPORATION 1,646
  3. XIAMEN RT PLUMBING TECHNOLOGY COMPANY 925
  4. NEOPERL DE 870
  5. GROHE DE 828
  6. PANASONIC INTELLECTUAL PROPERTY 738
  7. WUHAN SHENGYU DRAINAGE SYSTEMS COMPANY 727
  8. GEBERIT INTERNATIONAL CH 613
  9. KOHLER COMPANY US 570
  10. TOTO JP 549