Inventor
TOYODA SHIGERU
JP19 patents
⚠️ This page may combine multiple inventors who share the name “TOYODA SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO GAS CO LTD
16 patentsUS5993581ANov 30, 1999
Adhesive composition for bonding a lining tube on to the internal surface of an existing pipe
TOKYO GAS CO LTD21 citations90
US5609186AMar 11, 1997
Methods of lining the internal surface of a pipe
TOKYO GAS CO LTD18 citations89
US5853629ADec 29, 1998
Method of lining the internal surface of a pipe
TOKYO GAS CO LTD15 citations81
US5899636AMay 4, 1999
Reversible lining tube for repairing an existing pipeline
TOKYO GAS CO LTD7 citations73
US5855712AJan 5, 1999
Method of repairing an existing pipe
TOKYO GAS CO LTD7 citations73
US5716672AFeb 10, 1998
Methods of lining the internal surface of a pipe
TOKYO GAS CO LTD5 citations73
US5667841ASep 16, 1997
Methods of lining the internal surface of a pipe
TOKYO GAS CO LTD4 citations73
US5632818AMay 27, 1997
Liquid injection apparatus for use in a method of lining the internal surface of a pipe
TOKYO GAS CO LTD10 citations73
US5873390AFeb 23, 1999
Methods of lining the internal surface of a pipe
TOKYO GAS CO LTD11 citations71
US5740838AApr 21, 1998
Methods of lining the internal surface of a pipe
TOKYO GAS CO LTD8 citations71
US5590689AJan 7, 1997
Method for lining the internal surface of a pipe
TOKYO GAS CO LTD10 citations71
US5447664ASep 5, 1995
Method of lining an inner surface of a pipe
TOKYO GAS CO LTD18 citations71
US5857494AJan 12, 1999
Pipeline structure with a lining material, an end structure of said pipeline and a method for applying a lining material to a pipeline
TOKYO GAS CO LTD14 citations68
US5200011AApr 6, 1993
Non-digging tube reverse lining engineering method of conduit
TOKYO GAS CO LTD6 citations61
US5700405ADec 23, 1997
Method of lining the internal surface of a pipe
TOKYO GAS CO LTD0 citations51
US5888302AMar 30, 1999
Suction system for use in a method of lining the internal surface of a pipe
TOKYO GAS CO LTD0 citations41