P

Inventor

KURASHINA MINORU

JP5 patents
⚠️ This page may combine multiple inventors who share the name “KURASHINA MINORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KAWASAKI STEEL CO

3 patents
US6109305AAug 29, 2000

Double walled pipe, jacking method and pipe end structure of leading pipe

KAWASAKI STEEL CO8 citations71
US5615976AApr 1, 1997

Double walled pipe, jacking method and pipe end structure of leading pipe

KAWASAKI STEEL CO10 citations71
US6004073ADec 21, 1999

Double walled pipe, jacking method and pipe end structure of leading pipe

KAWASAKI STEEL CO0 citations50

ISEKI KAIHATSU KOKI

1 patent
US5527135AJun 18, 1996

Method for injecting lubricant or back-filling material into a space between the outside of double-wall pipes and the ground in the pipe-jacking method and an apparatus therefor

ISEKI KAIHATSU KOKI30 citations89

TOKYO GAS CO LTD

1 patent
US5484232AJan 16, 1996

Method for injecting lubricant and filler in the pipe-jacking method

TOKYO GAS CO LTD42 citations88