Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Teiko Hoshi — 5 Patents

Sony: 5 patents #7,785 of 25,231Top 35%
Rifu, JP: #599 of 2,101 inventorsTop 30%
Overall (All Time): #1,018,231 of 4,157,543Top 25%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
RE43454 Disc cartridge including an inner shell formed by severing a molded portion and a flanged thin-walled section Yuji Iwaki, Shuichi Kikuchi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi 2012-06-05
7127732 Disc cartridge including an inner shell formed by severing a molded portion and a flanged thin-walled section Yuji Iwaki, Shuichi Kikuchi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi 2006-10-24
7103898 Method for producing inner shell for a disc cartridge Yuji Iwaki, Shuichi Kikuchi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi 2006-09-05
7103900 Disc cartridge with crank-shaped dust intrusion prohibiting unit Yuji Iwaki, Shuichi Kikuchi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi 2006-09-05
7017170 Disk cartridge with inner shell supported for rotation in guide groove formed in an upper shell Yuji Iwaki, Shuichi Kikuchi, Naoki Inoue, Manabu Obata, Mitsuyoshi Kawaguchi 2006-03-21