P

Inventor

HAYASHI MITSUTOSHI

JP10 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI MITSUTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOKYO GAS CO LTD

5 patents
US5501548AMar 26, 1996

Method for controlling the direction of a shield tunneling machine and an apparatus therefor

TOKYO GAS CO LTD38 citations89
US5484232AJan 16, 1996

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

TOKYO GAS CO LTD42 citations88
US4584963AApr 29, 1986

System for repairing joints in pipes laid underground

TOKYO GAS CO LTD22 citations81
US6241925B1Jun 5, 2001

Method of lining channels

TOKYO GAS CO LTD2 citations54
US5611979AMar 18, 1997

Fabrication method for a funnel liner

TOKYO GAS CO LTD4 citations53

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

HONDA MOTOR CO LTD

1 patent
US4605032AAug 12, 1986

Air vent device for fuel tank on vehicle

HONDA MOTOR CO LTD12 citations63