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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
SM

Sei Murakami — 4 Patents

Hitachi: 4 patents #8,948 of 28,497Top 35%
FCFujimori Kogyo Co.: 1 patents #43 of 112Top 40%
Tokyo, JP: #30,468 of 90,295 inventorsTop 35%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Sei Murakami has been granted 4 US patents while listed as an inventor at Hitachi. The first was granted in 1994 and the most recent in May 2021. Sei Murakami ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Sei Murakami in Tokyo, JP.

Patents per Year

Patents granted per year, 1994 to 2021Bar chart with a peak of 1 patents in 1994.peak 11994: 1 patents19942017: 1 patents20172018: 1 patents20182021: 1 patents2021

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11015159 Single-use cell culturing apparatus and culturing bag Masaru Nanba, Takashi Andou, Yui SUGITA, Hiroyuki Matsuda 2021-05-25
10086313 Separation device and separation method Keisuke Shibuya, Yasuhiko Tada, Takeyuki Kondo 2018-10-02
9845453 Cell culture apparatus and cell culture method Masaru Nanba, Ryouichi Haga, Haruo Suzuki 2017-12-19
5296963 Apparatus and method for applying a laser beam through a microscope Masao Takai, Ryusei Nakano, Nobuo Kimura 1994-03-22 $65,000