Inventor
KOMARU YUITO
JP9 patents
Patents
9 patentsUS10443772B2Oct 15, 2019
Pipe joint structure, seal member, assembled condition management method for pipe joint, and assembled condition management device for pipe joint
KUBOTA KK5 citations70
US12000755B2Jun 4, 2024
Watertight testing device for a pipe joint part
KUBOTA KK1 citations55
US12565949B2Mar 3, 2026
Ring member
KUBOTA KK0 citations48
US12392428B2Aug 19, 2025
Pipe joint and pipe joining method
KUBOTA KK0 citations48
US12359755B2Jul 15, 2025
Pipe joint, spacer provided in pipe joint, and dividing piece constituting spacer
KUBOTA KK0 citations48
US11746937B2Sep 5, 2023
Pipe joint, push ring for pipe joint, method for joining pipes
KUBOTA KK0 citations47
US12196644B2Jan 14, 2025
Watertightness testing method and assembling device
KUBOTA KK0 citations46
US12281962B2Apr 22, 2025
Watertightness testing device and watertightness testing method
KUBOTA KK0 citations45
US12281727B2Apr 22, 2025
Pipe transport device and pipe joining method inside pipeline construction shaft
KUBOTA KK0 citations44