Method of producing an underground pipeline

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United States of America Patent

PATENT NO 9574700
APP PUB NO 20100300572A1
SERIAL NO

12675122

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Abstract

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A pipeline laid trenchlessly and/or without a sand bed is produced using a metallic conduit which is encased with an extruded layer of a polyamide molding material. In this way, the durability of the outer shell required for trenchless laying techniques without a sand bed is ensured.

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Patent Owner(s)

Patent OwnerAddress
EVONIK OPERATIONS GMBHRELLINGHAUSER STRASSE 1-11 ESSEN 45128

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buessing, Reinhard Herdecke, DE 1 19
Dowe, Andreas Borken, DE 30 447
Gahlmann, Klaus Marl, DE 8 42
Goering, Rainer Borken, DE 32 357
Kocks, Hans-Juergen Freudenberg, DE 3 36
Risthaus, Martin Dorsten, DE 11 72
Winkels, Joern Werl, DE 3 36

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