Inventor
MORINAGA AKIO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “MORINAGA AKIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO GAS CO LTD
13 patentsUS5077107ADec 31, 1991
Lining material for pipelines
TOKYO GAS CO LTD101 citations94
US4576205AMar 18, 1986
Tubular lining material for pipe lines having bends
TOKYO GAS CO LTD76 citations94
US4350548ASep 21, 1982
Method and apparatus for providing the inner surface of a pipe line with a lining
TOKYO GAS CO LTD94 citations94
US4334943AJun 15, 1982
Method for smoothly evaginating a tubular material under pressure
TOKYO GAS CO LTD55 citations94
US4368091AJan 11, 1983
Method for providing the inner surface of a pipe with a flexible tubular lining material through a liquid resin under pressure
TOKYO GAS CO LTD109 citations93
US4883557ANov 28, 1989
Method for lining pipe lines with a pressurized gas
TOKYO GAS CO LTD24 citations91
US5164237ANov 17, 1992
Lining material for pipelines
TOKYO GAS CO LTD38 citations90
US4684556AAug 4, 1987
Tubular lining material for pipe line
TOKYO GAS CO LTD41 citations90
US4877665AOct 31, 1989
Lining material for pipe lines
TOKYO GAS CO LTD30 citations89
US4584963AApr 29, 1986
System for repairing joints in pipes laid underground
TOKYO GAS CO LTD22 citations81
US4948452AAug 14, 1990
Apparatus for lining pipe lines including liquid seal means
TOKYO GAS CO LTD16 citations80
US4956038ASep 11, 1990
Method for lining pipe lines
TOKYO GAS CO LTD11 citations68
US4882470ANov 21, 1989
Boring device for opening passages to branch portions of a lined main pipe line
TOKYO GAS CO LTD2 citations57