Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Seigen Ri — 5 Patents

Fujitsu Limited: 5 patents #6,029 of 24,456Top 25%
Yokohama, JP: #16,650 of 49,234 inventorsTop 35%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Seigen Ri has been granted 5 US patents while listed as an inventor at Fujitsu Limited. The first was granted in 1990 and the most recent in May 1992. Seigen Ri ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Seigen Ri in Yokohama, JP.

Patents per Year

Patents granted per year, 1990 to 1992Bar chart with a peak of 3 patents in 1992.peak 31990: 1 patents19901991: 1 patents19911992: 3 patents1992

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5110791 Method for producing oxide superconductor 1992-05-05
5094978 Method of patterning a transparent conductor Shinji Miyagaki 1992-03-10
5093564 Photosensor having an amorphous silicon photoabsorption layer Shinji Miyagaki 1992-03-03
5066612 Method of forming wiring of a semiconductor device Takayuki Ohba, Shinji Miyagaki, Tatsushi Hara, Kenji Morishita, Seiichi Suzuki 1991-11-19
4914080 Method for fabricating superconductive film Kohta Yoshikawa, Naoki Awaji, Kyung-Ho Park, Nagisa Ohsako 1990-04-03