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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Seiji Narui — 53 Patents

Micron: 19 patents #927 of 6,374Top 15%
EMElpida Memory: 14 patents #37 of 692Top 6%
Hitachi: 11 patents #3,815 of 28,497Top 15%
PSPs4 Luxco S.A.R.L.: 8 patents #8 of 276Top 3%
HCHitachi Ulsi Systems Co.: 5 patents #151 of 867Top 20%
HEHitachi Vlsi Engineering: 3 patents #237 of 666Top 40%
Tokyo, JP: #1,722 of 90,295 inventorsTop 2%
Overall (All Time): #48,528 of 4,157,543Top 2%
53 Patents All Time
Seiji Narui has been granted 53 US patents while listed as an inventor at Micron. The first was granted in 1999 and the most recent in January 2024. Seiji Narui ranks #48,528 of 4,157,543 US inventors in our database (top 1.2%). Patent records list Seiji Narui in Tokyo, JP.

Patents per Year

Patents granted per year, 1999 to 2024Bar chart with a peak of 7 patents in 2021.peak 71999: 1 patents19992000: 1 patents2001: 1 patents20012002: 3 patents2003: 2 patents20032005: 2 patents2008: 1 patents20082011: 2 patents2012: 3 patents20122013: 5 patents2014: 6 patents20142015: 4 patents2016: 3 patents20162018: 1 patents2019: 2 patents20192020: 3 patents2021: 7 patents20212022: 2 patents2023: 3 patents20232024: 1 patents2024

Issued Patents All Time

Showing 1–25 of 53 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11869580 Apparatuses, systems, and methods for counter-based read clock in stacked memory devices Tomohiko Yamagishi, Kiyoshi Nakai, Takamasa Suzuki 2024-01-09 $10,439,000
11854601 Apparatuses, systems, and methods for read clock timing alignment in stacked memory devices Kiyoshi Nakai 2023-12-26 $15,560,000
11805638 Semiconductor device with first-in-first-out circuit Yuki Ebihara 2023-10-31
11763855 Methods and apparatuses for aligning read data in a stacked semiconductor device 2023-09-19 $11,511,000
11264068 Apparatuses and methods for semiconductor devices including clock signal lines Ryosuke Yatsushiro 2022-03-01 $21,169,000
11244888 Memory core chip having TSVs Naohisa Nishioka 2022-02-08 $27,820,000
11004475 Methods and apparatuses for aligning read data in a stacked semiconductor device 2021-05-11 $21,304,000
10964702 Semiconductor device with first-in-first-out circuit Yuki Ebihara 2021-03-30 $32,966,000
10943622 High bandwidth memory having plural channels 2021-03-09 $21,153,000
10943625 Memory device with write data bus control Chikara Kondo, Tomoyuki Shibata, Chiaki Dono, Minehiko Uehara, Taihei Shido +1 more 2021-03-09 $21,153,000
10922262 Semiconductor layered device with data bus inversion Yuki Ebihara 2021-02-16 $25,890,000
10916489 Memory core chip having TSVS Naohisa Nishioka 2021-02-09 $22,943,000
10885959 Apparatuses and methods for semiconductor devices including clock signal lines Ryosuke Yatsushiro 2021-01-05 $21,674,000
10777232 High bandwidth memory having plural channels 2020-09-15 $12,657,000
10664432 Semiconductor layered device with data bus inversion Yuki Ebihara 2020-05-26 $16,522,000
10553263 Memory device with write data bus control Chikara Kondo, Tomoyuki Shibata, Chiaki Dono, Minehiko Uehara, Taihei Shido +1 more 2020-02-04 $21,371,000
10489312 Stack access control for memory device Homare Sato, Chikara Kondo 2019-11-26 $20,458,000
10185652 Stack access control for memory device Homare Sato, Chikara Kondo 2019-01-22 $102,505,000
10163469 System and method for write data bus control in a stacked memory device Chikara Kondo, Tomoyuki Shibata, Chiaki Dono, Minehiko Uehara, Taihei Shido +1 more 2018-12-25
9472253 Semiconductor device including spiral data path Chikara Kondo 2016-10-18 $12,812,000
9412432 Semiconductor storage device and system provided with same Hiromasa Noda, Chiaki Dono, Chikara Kondo, Masayuki Nakamura 2016-08-09
9355705 Semiconductor device, method for controlling the same, and semiconductor system Kiyohiro Furutani 2016-05-31
9081402 Semiconductor device having a complementary field effect transistor Shinichi Miyatake, Hitoshi Tanaka 2015-07-14
8988952 Semiconductor device having ODT function Atsushi Hiraishi, Toshio Sugano, Yasuhiro Takai 2015-03-24
8971132 Semiconductor device, method for controlling the same, and semiconductor system Kiyohiro Furutani 2015-03-03