Koki Yamaguchi — 15 Patents at Otics

Koki Yamaguchi has been granted 15 US patents while listed as an inventor at Otics. The first was granted in 2011 and the most recent in November 2023. Koki Yamaguchi ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Koki Yamaguchi in Nishio, JP.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #	Title	Co-Inventors	Date
11820009	Robot system	—	2023-11-21
10260381	Variable valve mechanism of internal combustion engine	Akira Sugiura	2019-04-16
10233790	Variable valve mechanism of internal combustion engine	Naoki Hiramatsu, Masatoshi Sugiura	2019-03-19
10221728	Variable valve mechanism of internal combustion engine	Hiroyuki Suzuki, Akira Sugiura	2019-03-05
10167749	Variable valve mechanism of internal combustion engine	—	2019-01-01
10047647	Variable valve mechanism of internal combustion engine	Naoki Hiramatsu, Masatoshi Sugiura, Motohiro Yuge	2018-08-14
10024199	Variable valve mechanism of internal combustion engine	Naoki Hiramatsu, Masahide Sakurai, Motohiro Yuge, Masaaki Tani	2018-07-17
9879577	Variable valve mechanism of internal combustion engine	Naoki Hiramatsu, Takayuki Maezako, Masatoshi Sugiura, Shinichiro Kikuoka, Masaaki Tani +1 more	2018-01-30
9732641	Variable valve mechanism of internal combustion engine	Masatoshi Sugiura, Naoki Hiramatsu	2017-08-15
9556762	Variable valve mechanism of internal combustion engine	Masatoshi Sugiura, Naoki Hiramatsu	2017-01-31
9540969	Variable valve mechanism of internal combustion engine	Masatoshi Sugiura, Naoki Hiramatsu	2017-01-10
9181826	Variable valve mechanism of internal combustion engine	Akira Sugiura, Naoki Hiramatsu, Takayuki Maezako	2015-11-10
8960144	Variable valve mechanism of internal combustion engine	Naoki Hiramatsu, Akira Sugiura, Takayuki Maezako	2015-02-24
8833317	Variable valve mechanism	Junichi Ookawara, Dan Nagano	2014-09-16
8051817	Variable valve mechanism	—	2011-11-08

Koki Yamaguchi — 15 Patents

Issued Patents All Time

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