Inventor
MATSUNAGA KIYOFUMI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “MATSUNAGA KIYOFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO RUBBER IND
12 patentsUS11684830B2Jun 27, 2023
Golf club head with sliding weight and cover
SUMITOMO RUBBER IND27 citations94
US10912969B2Feb 9, 2021
Golf club head
SUMITOMO RUBBER IND2 citations73
US10898770B2Jan 26, 2021
Golf club head
SUMITOMO RUBBER IND3 citations73
US11701554B2Jul 18, 2023
Golf club head
SUMITOMO RUBBER IND2 citations65
US12434110B2Oct 7, 2025
Golf club head with sliding weight and cover
SUMITOMO RUBBER IND0 citations62
US12337217B2Jun 24, 2025
Golf club head
SUMITOMO RUBBER IND0 citations62
US11666805B2Jun 6, 2023
Golf club head
SUMITOMO RUBBER IND0 citations62
US11534665B2Dec 27, 2022
Golf club head
SUMITOMO RUBBER IND1 citations62
US10322326B2Jun 18, 2019
Golf club hosel detachably coupled in a plurality of rotation positions
SUMITOMO RUBBER IND1 citations62
US12257483B2Mar 25, 2025
Golf club head and golf club
SUMITOMO RUBBER IND1 citations61
US12420149B2Sep 23, 2025
Golf club head
SUMITOMO RUBBER IND0 citations59
US12551763B2Feb 17, 2026
Iron golf club head
SUMITOMO RUBBER IND0 citations52
DUNLOP SPORTS CO LTD
11 patentsUS9295885B2Mar 29, 2016
Golf club
DUNLOP SPORTS CO LTD50 citations94
US8864604B2Oct 21, 2014
Golf club head and golf club
DUNLOP SPORTS CO LTD42 citations94
USD733820SJul 7, 2015
Golf club head
DUNLOP SPORTS CO LTD20 citations93
US10010768B2Jul 3, 2018
Golf club
DUNLOP SPORTS CO LTD11 citations84
US9724572B2Aug 8, 2017
Golf club
DUNLOP SPORTS CO LTD9 citations84
US9480890B2Nov 1, 2016
Golf club
DUNLOP SPORTS CO LTD12 citations84
US9320950B2Apr 26, 2016
Golf club
DUNLOP SPORTS CO LTD8 citations84
USD732127SJun 16, 2015
Golf club head
DUNLOP SPORTS CO LTD9 citations84
US9211454B2Dec 15, 2015
Golf club shaft
DUNLOP SPORTS CO LTD6 citations73
US9814946B2Nov 14, 2017
Golf club head
DUNLOP SPORTS CO LTD1 citations47
US9566485B2Feb 14, 2017
Golf club shaft
DUNLOP SPORTS CO LTD1 citations46