HT

Hiromasa Tsunashima

SI Sumitomo Rubber Industries: 5 patents #438 of 1,637Top 30%
DC Dunlop Sports Co.: 1 patents #121 of 168Top 75%
SL Sri Sports Limited: 1 patents #123 of 176Top 70%
Overall (All Time): #712,903 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
11504587 Golf club head Masahide Onuki 2022-11-22
10870041 Golf club head with deformation portion Masahide Onuki 2020-12-22
10744378 Golf club head Masahide Onuki, Hiroshi Hasegawa 2020-08-18
10537769 Golf club head Masahide Onuki, Hiroshi Hasegawa 2020-01-21
10286265 Golf club head Naruhiro MIZUTANI, Hiroshi Hasegawa, Masahide Onuki 2019-05-14
9840058 Fiber-reinforced epoxy resin material, prepreg and, tubular body made of fiber-reinforced epoxy resin material Yasuo Naito, Kazuyoshi Shiga 2017-12-12
8907020 Golf ball Yumi Kanemitsu, Kazuhisa Fushihara, Mikio Yamada 2014-12-09