THREADED JOINT FOR PIPES

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20150198270A1
SERIAL NO

14412286

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A threaded joint for pipes is provided in which a box-side lip length L, which is the axial distance between a pin-nose-end corresponding point P of the box component 1 and a load surface 18b of a lip-side internal thread ridge 50 closest to the pin-nose-end corresponding point P, is 300 or more times as long as an insertion surface interval δ, which is the axial interval between an insertion surface 19b of an internal thread ridge at a position two or more ridges backwards from the lip-side internal thread ridge 50 and an insertion surface 19a of an external thread ridge facing the insertion surface 19b when tightened, that is, L≧300×δ.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chikatsune, Hiroshi Chiyoda-ku, JP 12 35
Kawai, Takamasa Chiyoda-ku, JP 21 44
Nagahama, Takuya Chiyoda-ku, JP 19 66
Takahashi, Kazunari Chiyoda-ku, JP 68 482
Takano, Jun Chiyoda-ku, JP 54 269
Ueta, Masateru Chiyoda-ku, JP 18 102
Yoshikawa, Masaki Chiyoda-ku, JP 49 241

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