Inventor
SUGIYAMA YOSHIROU
JP4 patents
Patents
4 patentsUSD876001SFeb 18, 2020
Strip member for pipes
SEKISUI CHEMICAL CO LTD14 citations80
US11015757B2May 25, 2021
Pipe-making apparatus and pipe-making method
SEKISUI CHEMICAL CO LTD1 citations59
US11473714B2Oct 18, 2022
Strip member for spiral pipe and rehabilitation method of existing pipe
SEKISUI CHEMICAL CO LTD0 citations46
US10920918B2Feb 16, 2021
Pipe-making apparatus and pipe-making method for spiral pipe
SEKISUI CHEMICAL CO LTD0 citations45