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USPTO Patent Rankings Data through Dec 31, 2025
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Seiichi Yagi — 3 Patents

KOKonica: 1 patents #1,290 of 1,958Top 70%
KCKonishiroku Photo Industry Co.: 1 patents #532 of 894Top 60%
MIMinigrip: 1 patents #22 of 49Top 45%
Sakahogi, JP: #5 of 12 inventorsTop 45%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Seiichi Yagi has been granted 3 US patents while listed as an inventor at Konica. The first was granted in 1981 and the most recent in November 1991. Seiichi Yagi ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Seiichi Yagi in Sakahogi, JP.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5065188 Charge-eliminating apparatus of copier Hiroshi Kobayashi, Kazuhiko Tsuboi, Atsushi Takahashi, Shigeo Maeda 1991-11-12
4305651 System for adjusting output current of discharge electrode for electrophotographic copying machines Tadashi Umezawa, Katsuhiro Syukuri 1981-12-15
4259133 Method and apparatus for making profile sheets 1981-03-31 $1,201,000