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Jun Iijima — 40 Patents

Toshiba Memory: 11 patents #113 of 1,971Top 6%

Kioxia: 11 patents #90 of 1,813Top 5%

Casio Computer Co.: 10 patents #228 of 1,970Top 15%

Kabushiki Kaisha Toshiba: 2 patents #10,039 of 21,451Top 50%

SCSemiconductor Technology Academic Research Center: 2 patents #50 of 254Top 20%

NUNational University Corporation Tohoku University: 2 patents #36 of 170Top 25%

NCNissin Kogyo Co.: 2 patents #101 of 334Top 35%

Sony: 1 patents #17,321 of 25,231Top 70%

Yokkaichi, JP: #68 of 2,072 inventorsTop 4%

Overall (All Time): #78,057 of 4,157,543Top 2%

40 Patents All Time

Jun Iijima has been granted 40 US patents while listed as an inventor at Kioxia. The first was granted in 1998 and the most recent in April 2025. Jun Iijima ranks #78,057 of 4,157,543 US inventors in our database (top 1.9%). Patent records list Jun Iijima in Yokkaichi, JP.

Patents per Year

Issued Patents All Time

Showing 1–25 of 40 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12272676	Memory device	Masayoshi Tagami, Ryota Katsumata, Tetsuya Shimizu, Takamasa Usui, Genki Fujita	2025-04-08
12089409	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2024-09-10
12068301	Semiconductor device and method of manufacturing the same	Yumi Nakajima	2024-08-20
11817428	Memory device	Masayoshi Tagami, Ryota Katsumata, Tetsuya Shimizu, Takamasa Usui, Genki Fujita	2023-11-14
11769747	Semiconductor device and method of manufacturing the same	Genki SAWADA, Masayoshi Tagami, Ippei Kume, Kiyomitsu Yoshida	2023-09-26
11729973	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2023-08-15
11652094	Semiconductor device and method of manufacturing the same	Yumi Nakajima	2023-05-16
11532589	Semiconductor wafer and method of manufacturing the same	Hiroshi Nakaki	2022-12-20
11355512	Semiconductor device including a plug connected to a bit line and containing tungsten	Masayoshi Tagami, Masayuki Kitamura, Satoshi Wakatsuki	2022-06-07
11302684	Semiconductor device and method of manufacturing the same	Yumi Nakajima	2022-04-12
11270980	Memory device	Masayoshi Tagami, Ryota Katsumata, Tetsuya Shimizu, Takamasa Usui, Genki Fujita	2022-03-08
11063062	Semiconductor device and method of manufacturing the same	Masayoshi Tagami, Shinya Arai, Takahiro Tomimatsu	2021-07-13
10950630	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2021-03-16
10868029	Staggered semiconductor memory device	Masayoshi Tagami, Takamasa Usui, Takahito Nishimura	2020-12-15
10748928	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2020-08-18
10741527	Memory device	Masayoshi Tagami, Ryota Katsumata, Tetsuya Shimizu, Takamasa Usui, Genki Fujita	2020-08-11
10600771	Semiconductor device and method of manufacturing the same	Yumi Nakajima	2020-03-24
10553612	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2020-02-04
10381374	Semiconductor memory	Masayoshi Tagami, Ryota Katsumata, Kazuyuki Higashi	2019-08-13
10331028	Imprinting apparatus, recording medium, and imprinting method	Takahito Nishimura	2019-06-25
10297578	Memory device	Masayoshi Tagami, Ryota Katsumata, Tetsuya Shimizu, Takamasa Usui, Genki Fujita	2019-05-21
10075631	Imaging apparatus, imaging method and recording medium having program for performing self-timer shooting	Junichi Miyasaka	2018-09-11
9887262	Semiconductor device	Yoshihiro Minami, Tetsuya Shimizu, Takamasa Usui, Masayoshi Tagami	2018-02-06
9723221	Imaging device shooting a common subject in synchronization with other imaging devices	Kazuya Nara, Kouichi Saitou, Toshiya Kiso, Takuya Yamada	2017-08-01
9589974	Nonvolatile semiconductor memory device and method for manufacturing same	Yoshiaki Himeno, Takamasa Usui	2017-03-07