SH

Seiji Hayase

SI Sumitomo Rubber Industries: 13 patents #138 of 1,637Top 9%
DC Dunlop Sports Co.: 5 patents #59 of 168Top 40%
SL Sri Sports Limited: 5 patents #77 of 176Top 45%
Overall (All Time): #179,645 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
12409368 Golf club head Masahide Onuki 2025-09-09
12161918 Golf club head Yohei OZAKI, Masahide Onuki 2024-12-10
11311782 Golf club head Yohei OZAKI, Masahide Onuki 2022-04-26
11207574 Golf club head Yuki MOTOKAWA 2021-12-28
11123618 Golf club Naruhiro MIZUTANI, Kenji Takasu, Takashi Nakano, Daisuke KOHNO 2021-09-21
10864411 Golf club Naoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Wataru Kimizuka 2020-12-15
10850171 Golf club head Yuki MOTOKAWA 2020-12-01
10828542 Golf club head Yuki MOTOKAWA 2020-11-10
10632355 Golf club Naruhiro MIZUTANI, Kenji Takasu, Takashi Nakano, Daisuke KOHNO 2020-04-28
10434387 Golf club Naruhiro MIZUTANI, Kenji Takasu, Takashi Nakano, Daisuke KOHNO 2019-10-08
10427009 Multi-piece golf ball Takahiro Shigemitsu, Hidetaka INOUE 2019-10-01
10335657 Golf club Naruhiro MIZUTANI, Kenji Takasu, Takashi Nakano, Daisuke KOHNO 2019-07-02
10220278 Golf club Naruhiro MIZUTANI, Kenji Takasu, Takashi Nakano, Daisuke KOHNO 2019-03-05
9795841 Golf club Naoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Wataru Kimizuka 2017-10-24
9776055 Golf club Naoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Wataru Kimizuka 2017-10-03
9586107 Golf club Naoyoshi Ueda, Masahiko Ueda, Yasushi Sugimoto, Takashi Nakamura, Wataru Kimizuka 2017-03-07
9220955 Golf club head and method for manufacturing the same Masahide Onuki 2015-12-29
9174098 Golf club head Masahide Onuki, Akio Yamamoto 2015-11-03
8849635 Method for predicting modal damping ratio of composite head Masahide Onuki 2014-09-30
8840490 Golf club head Masahide Onuki, Tomoya Hirano 2014-09-23
8827837 Golf club head Masahide Onuki 2014-09-09
8747251 Golf club head Masahide Onuki 2014-06-10
8226500 Golf club head Akio Yamamoto 2012-07-24