Inventor

FUJITA AKITAKA

JP3 patents

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

TOKYO GAS CO LTD

2 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

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