Placement of pipes in the ground

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5494118
SERIAL NO

08204165

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The invention provides that an underground through borehole (28) is formed with a reaming tool (24). It is filled with a viscous fluid and as soon as possible after being so filled, a flexible lining tube (32) is inserted into the borehole (28) to keep the surface from collapsing until a rigid service pipe (12) has been pulled or pushed into the borehole.

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Patent Owner(s)

Patent OwnerAddress
INSITUFORM GROUP LIMITEDDOUGLAS ISLE OF MAN

International Classification(s)

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  • 1994 Application Filing Year
  • E21B Class
  • 637 Applications Filed
  • 342 Patents Issued To-Date
  • 53.69 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1994199519961997199819990255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wood, deceased Eric late of Castletown, GB4 7 184

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Patent Citation Ranking

  • 5 Citation Count
  • E21B Class
  • 3.23 % this patent is cited more than
  • 29 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges2030614760231796742101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8091 - 100100 +020406080100120140160180200220240260280300320340

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