Inventor
OHASHI RYOJI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “OHASHI RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KAWASAKI HEAVY IND LTD
19 patentsUS7828191B2Nov 9, 2010
Friction stir welding machine and friction stir welding tool
KAWASAKI HEAVY IND LTD10 citations84
US7677427B2Mar 16, 2010
Welding tool for friction-stir welding apparatus
KAWASAKI HEAVY IND LTD12 citations82
US12202066B2Jan 21, 2025
Friction stir spot welding apparatus and joint structure
KAWASAKI HEAVY IND LTD3 citations73
US12303995B2May 20, 2025
Friction stir spot welder and method of operating friction stir spot welder
KAWASAKI HEAVY IND LTD3 citations72
US11292076B2Apr 5, 2022
Friction spot joining device and friction spot joining method
KAWASAKI HEAVY IND LTD2 citations72
US11185944B2Nov 30, 2021
Friction stir spot welding device and friction stir spot welding method
KAWASAKI HEAVY IND LTD2 citations72
US11135674B2Oct 5, 2021
Friction stir spot welding method and friction stir spot welding device
KAWASAKI HEAVY IND LTD0 citations62
US12528138B2Jan 20, 2026
Friction stir welding device and maintenance method for same
KAWASAKI HEAVY IND LTD0 citations61
US12496655B2Dec 16, 2025
Friction stir joining device, method of operating the same and joint structure
KAWASAKI HEAVY IND LTD0 citations61
US12168261B2Dec 17, 2024
Friction stir joining device, method of operating the same and joint structure
KAWASAKI HEAVY IND LTD0 citations61
US12064831B2Aug 20, 2024
Joining system, and method for operating same
KAWASAKI HEAVY IND LTD1 citations61
US12485622B2Dec 2, 2025
Joint structure and joining method
KAWASAKI HEAVY IND LTD0 citations58
US8025200B2Sep 27, 2011
Friction stir welding machine and friction stir welding tool
KAWASAKI HEAVY IND LTD1 citations52
US11040413B2Jun 22, 2021
Spot welding apparatus, spot welding method, and joint structure
KAWASAKI HEAVY IND LTD0 citations51
US10974343B2Apr 13, 2021
Friction stir spot joining apparatus and friction stir spot joining method
KAWASAKI HEAVY IND LTD0 citations51
US10974344B2Apr 13, 2021
Friction stir spot joining apparatus and friction stir spot joining method
KAWASAKI HEAVY IND LTD0 citations51
US8757470B2Jun 24, 2014
Friction stir welding apparatus and method
KAWASAKI HEAVY IND LTD1 citations51
US12454024B2Oct 28, 2025
Joining method and joined body
KAWASAKI HEAVY IND LTD0 citations50
US9839973B2Dec 12, 2017
Friction stir spot welding apparatus, friction stir spot welding method, and perpendicular-to-plane detection device for use in friction stir spot welding
KAWASAKI HEAVY IND LTD1 citations49